Section 1 Twin Cam 1-35 Evolution Motor

Section 1
Twin Cam 1-35
Evolution Motor
Cam Cover .................................. 20-23 Andrews ..............................72, 89, 110
Cams ............................................ 6-12 Breathers .................................... 62-63
Colony Hardware ........................... 2, 3 Cam Covers & Parts ................... 48-54
Cylinder Kits ...........................14, 24-27 Crane ..................................94, 98, 100
Flywheel ...................................... 14-17 Cylinders .......................78-81, 116-117
Gaskets ....................................... 38-40 Delkron ............................................. 44
Oil Pump ..........................................21 Flywheels ...............................47, 66-67
Pushrods/Covers ........................ 30-32 Flywheel Case Parts ................... 46-49
Pistons ........................................ 24-28 Gaskets Evo .....101-105, XL ...125-126
Rocker Covers ........................... 36, 38 Jims ............ 51, 57-58, 61-62, 69, 74,
.......................... 76-77, 89, 92, 94, 98
S&S Hot Set Up .......................... 15-16
KB Pistons ........................................86
S&S Motor Cases ...............................5
Lifter .............................................73-77
S&S Motors .........................................4
Motors ......................................... 41-42
Valves & Rockers ........................ 33-35
Oil Pump ..................................... 55-61
Pistons/ Rings ............................. 80-86
Pushrods/ Covers ....................... 87-91
Rocker Arms ............................. 99-100
Rocker Covers ..........101-102, 107-109
Rods/Components ......................68-69
S&S ...............41-43, 52, 55-56, 62-71,
..........74-75, 77, 80-82, 87- 88, 92, 106
STD .................................................. 44
Valves & Guides & Springs ..........92-99
XL, EVO Motor Parts ...............110-126
Wiseco .........................................84-85
PRESTON CYCLE PRODUCTS INC.
1-1
Twin Cam & Multi-Fit
Chrome Polished Allen Motor Show Bike Kits
Complete motor kit includes everything needed to
mount the following: rocker box, primary cover, lifter
base, transmission covers, oil pump, air cleaner, cam
cover, point cover, timing plug, motor mounts (early XL
motor mounts include spacers). Sportster kits also include fasteners for sprocket cover, rear master cylinder
and generator. Twin Cam 88 kits also include fasteners
for motor case and oil hose cover. Button head allens
and flat head allens are used where necessary.
7951 Dyna Glide 2006-on
7950 Dyna Glide 1999-05
7949 Dyna Glide 1993-98
7948 Dyna Glide 1991-92
7954 Softail 2007-on
7947 Softail 2000-06
7946 Softail 1992-99
7945 Softail 1989-91
7944 Softail 1987-88
7943 Evo 4 speed 1984-86
7953 FLT 2007-on
7942 TC 88 FLT 1999-06
7941 FLT, FXR 1992-98
7940 FLT, FXR 1987-91
7939 Evo 5 speed 1985-86
7934 Sportster 1994-03
7933 Sportster 1991-93
7932 Sportster 1986-90
7952 VRSCA 2002-on
Colony Twin Cam Kits
All kits are polished allens except where noted by (*), which are button
heads.
PCPDescription
9948 Electrical panel cover mounting kit Dyna 1991-on
9776* Handlebar lever mount and master cylinder cover screws BT 96-on
9932 Intake manifold to cylinder head mounting kit BT and XL 1995-on
9942 Lifter base screw kit TC 88, Dyna, FLT 1999-on, Softail 2000-on
9956 Motor case mounting kit TC 88, Dyna, FLT 1999-on, Softail 2000-on
9939 Oil adaptor screw kit TC 88 and FLT 1999-on
9950 Oil hose cover mounting kit TC 88, Dyna, FLT 1999-on
9954* Point cover screws TC 88, Dyna, FLT 1999-on, Softail 2000-on
9959 Primary cover screw kit TC 88, FLT 1999-on
24470 Timing cover screw kit TC 88, Dyna, FLT 1999-on, Softail 2000-on
9935 Trans to motor mounting kit TC 88, Dyna, FLT 1999-on, Softail 2000-on
72046 Voltage regulator mounting kit Softail 2000-on
72116 Lower front motor mount all Softail 2000-on
Rocker Cover Screw Kit
Chrome plated 12 point screw, washers,
and gaskets mount rocker covers on 1985on FL,FX and 1986-on XL.
72280
1-2
PRESTON CYCLE PRODUCTS INC.
Twin Cam & Multi-Fit
Colony Lower Motor Mount Kit
Complete kit for 2000-on Softail models features heat treated
and plated bolts, locknuts and heavy duty washers.
PCPFinish
72116 Polished allen bolts
72117 Chrome cap bolts
72118 Cadmium cap bolts
Acorn TC Motor & Transmission Kits
Chrome complete acorn style motor and transmission
kits.
Complete Kits
7925 All Dyna 1999-on
7929 All FLT 1999-06
Individual Kits-Acorn
9957 Air cleaner all BT 1983-on
9945 Cam cover all 1999-on
9941 Lifter base all Dyna, FLT 1999-on, FXST 00-on
9955 Motor case all TC 1999-on
9938 Oil filter adapter kit all Dyna, FLT 1999-on
9949 Oil hose cover all Dyna, FLT 1999-on
9936 Motor mounting kit, front all Dyna 1991-on
9953 Point cover all 1999-on
8917 Primary cover Dyna 1989-05, FXST 1989-06
9958 Primary cover all FLT 1999-06
9943 Rocker box all 1999-on
9861 Transmission dipstick, custom all BT 87-on
9934 Trans to motor all 1999-06
9785 Trans shifter cover all Dyna 1991-on
8912 Trans side cover Dyna 91-06, FLT-ST 1987-06
9951 Trans shifter cover all FLT, Softail 1998-06
Colony Chrome Motor Mount Bolt Covers
Chrome plated covers add a smooth finished look when
easily installed with a set screw. Sold in sets of 2.
72119 Softail 2000-on
PRESTON CYCLE PRODUCTS INC.
1-3
S&S Twin Cam Motor
Notes: For installation in stock H-D chassis only. Balanced version not available. VFI and IST are not compatible with wiring in 2004 and later chassis. Carbureted
engines include a G carb and available only with an S&S
IST ignition system.
Carbureted with IST Ignition 1999-06
Engines for carbureted models all come with the S&S Super
G carburetor with the slotted “Desparado” air cleaner cover
for good looks and improved performance.
Engines equipped with the IST Iignition are covered by an
extended two year warranty by S&S because they are confident that the IST ignition will protect the engine from damage
due to detonation. In addition, the IST Guardian “break in rev
limit feature” is activated on IST modules sold with complete
S&S engines. This feature protects the new engine from
premature failure with a lower rev limit during break in. All
engines include 4 quarts of Mobile oil and a filter.
124” TC Style Engine (Carb with IST) 1999-06
Natural TC “A” for stock mounting with IST ignition and 2
year warranty)
319894 Natural
319895 Black
319896Polished
S&S Complete 124” Engines for Twin Cams
S&S introduces their first truly complete Twin Cam style 124”
engine. We started with the super strong S&S Twin Cam
style crankcases which feature extra section thickness in key
stress areas and a Timken style sprocket shaft bearing for superior strength and load capacity. To that solid foundation we
added S&S’s legendary flywheels, connecting rods, .640 lift
gear drive cams, S&S 4-1/8” bore cylinders and pistons, S&S
cylinder heads, rocker arms, rocker covers, electric compression releases, and an S&S Super G carburetor. The new S&S
Twin Cam style oil pump and tappets were added to complete
the engine.
Bore StrokeCam PistonCR
TC and Evo 4-1/8” 4-5/8” 640GP forged 10.8:1
124” TC Style Engine for EVO 1984-99 (Carb
with IST)
Natural TC “A” for EVO style mounting (1999-03 with IST
ignition and 2 year warranty)
319709 Natural
319713 Black
319714 Polished
For Twin Cam and Evo Style Chassis
S&S Twin Cam style engines are available with two different motor mount styles. The first type has the stock Twin Cam rear motor
mount. This style is for replacement use in an existing H-D chassis,
and make it easy to get the performance you want from your Twin
Cam motorcycle. Take the stock engine out and put an S&S engine
in. It’s that simple. This is a turn-key solution to the age old problem
of making your bike go faster. The second type has an Evolution style
rear motor mount and can be installed in any stock or aftermarket
Evolution style chassis. This engine allows owners of Evolution style
bikes to upgrade to a Twin Cam style power plant without buying a
new bike. Maybe you’ve spent a lot of time and effort getting your
bike the way you want it, but you’d like a Twin Cam style engine, you
can keep the bike you’ve customized and have an updated engine
too!
1-4
S&S High Output Single Fire Coil
The perfect complement to S&S IST ignition systems. This
single fire coil is actually two separate coils in a single package. Works well with any single fire ignition system. Coil
impedance of 3 Ohms per coil. Not compatible with the S&S
Variable Fuel Injection System.
551571
Notes:
Oil line installation kit #310424 is required for the installation in 199905 Dyna models. This kit includes a special transmission top cover
and oil lines.
Oil line installation kit #310425 is required for installation in 2000-06
FLT models. Stock transmission top cover may be used.
PRESTON CYCLE PRODUCTS INC.
S&S TC “A” Style Crankcases
Not Available for Twin Cam 88B or 2007-on TC
96 or TC-96B engines
Good news for performance enthusiasts who want large
displacement Twin Cam style crankcases. S&S has two types
of Twin Cam style crankcases available which are intended
for two different applications. The first type of S&S crankcase
is intended to replace the crankcases in existing HarleyDavidson motorcycles only. These crankcases have a rear
motor mount that bolts directly to the stock transmission. The
second type of S&S crankcase has an Evolution style rear
motor mount and will bolt into stock or aftermarket Evolution
style frames. The crankcases with Evolution style rear motor mounts use an Evolution style sprocket shaft seal which
allows the use of a stock Evolution seal spacer. In addition,
they are machined for an Evolution style charging system.
Otherwise, the two cases are nearly identical. Both styles are
available for stock bore, 4” bore and 4-1/8” bore engines, and
are available in natural aluminum or black powdercoat finish.
Features:
Greater overall strength than stock crankcases, especially
in the front motor mount, important for high performance applications.
All S&S Twin Cam style crankcases use strong dependable
Timken style sprocket shaft bearings to stand up to the most
demanding applications.
All passages between the crankcase cam support plate are
o-ring sealed.
Compatible with most stock components. Use stock oil pump,
cam support plate, gear cover, and Timken style sprocket
shaft bearing, etc. See note above.
Cam chest has clearance for up to .675” lift cams and strokes
to 5”.
S&S Crankcase Breather Valve for Twin Cam
This valve helps to reduce crankcase pressure by reducing oil carry over problems. The use of this valve also can
provide a slight increase in torque and horsepower through
the midrange. Not available for Twin Cam 88B or Twin Cam
96B engines.
For Engines with Stock Oil Pump
312070 1999-02
312071 2003-on
Engines with S&S Oil Pump
312093 1999-02 stock crankcases
312094 2003-on Stock and all S&S crankcases
Includes the S&S Twin Cam style crankcase breather valve
designed to eliminate oil carry-over and oil scavenging problems associated with Twin Cam engines.
Stock bore cases are perfect for replacement applications, 4”
bore cases are a natural for use with S&S Super Sidewinder
Hot Set Up kits, and 4-1/8” bore cases make really large
displacement custom engines possible, and are available with
the S&S cylinder stud pattern or with the stock cylinder stud
pattern. 4-1/8” bore cases with stock stud pattern areideal for
the S&S 124” Hot Set Up Kit for stock crankcases.
S&S Twin Cam Style Stock Replacement Crankcases
1999-06 Models except 2006 Dyna.
Bore Natural Finish Black Finish
Stock310171
310172
4”310174
310175
4-1/8”310180
310181
4-1/8”
310178 (S&S Stud Pattern)
S&S Twin Cam Style Crankcase For Evolution Chassis
Bore Natural Finish Black Finish
Stock310133
310134
4”310130
310131
4-1/8”310127
310128
Notes: (Non Stocking Item)
Oil line installation kit #310424 is required for the installation in 199905 Dyna models. This kit includes a special transmission top cover
and oil lines.
Oil line installation kit #310425 is required for installation in 2000-06
FLT models. Stock transmission top cover may be used.
PRESTON CYCLE PRODUCTS INC.
1-5
Twin Cam
S&S Gear Drive Cams for 1999-on BT Engines with Stock Oil Pumps
Application Information for S&S BT Camshafts
S&S offers a variety of cam grinds for 1999-on BT engines in
chain drive and gear drive versions. With the exception of the
“bolt-in” 475G and 510C/510G camshafts, S&S cams are high
lift and were designed to take advantage of the extra flow of
ported stock heads or S&S Super Stock cylinder heads. Due
to the high lift of these cams, S&S adjustable pushrods and
high performance valve springs are recommended. Not all
grinds are available in the chain drive version.
◙ S&S 475G: bolt-in replacement to eliminate the stock cam drive chains on 1999-06 engines
Stock Spec Gear Drive Cams for 1999-06 BT...
All You’re Gaining is Piece of Mind!
◙ S&S 510C/G: bolt-in cam for 88”, 95”, 96” engines with
compression ratios below 9.7:1. Primarily for stock heads that have not been ported.
Not everybody wants to go faster, but a lot of riders are
concerned about the possibility of the stock cam chain drive
in their 1999-06 Twin Cam 88 engine failing. The solution is to
install a set of gear drive cams that has the same timing and
lift specifications as the stock cam. Stock lift and timing allows
bolt in installation. There is no need for carb jetting or EFI recalibration, and this stock lift cam set will not accelerate valve
train wear like high lift cams do. Fits 1999-06 Harley-Davidson
BT, except 2006 Dyna models.
Stock Spec Gear Drive Cams 1999-06, Except Dyna
30600 475G Cam kit
30601 Cams with inner gears only
◙ S&S 546G: Short duration emissions cam with very little overlap to reduce emissions of unburned hydrocarbons. It is intended as a replacement for S&S emissions certified engines
◙ S&S 570C/G: Designed for 88” to 96” engines with
compression ratios between 9:1 and 10:1
◙ S&S 585C/G: Designed for 88” to 95” engines with
compression ratios from 10 to 10.5:1 and 100” and 107” engines at 9.7:1 to 10.5:1 compression
◙ S&S 625C/G: Cam set designed for 95” or larger engine
with compression ratios between 10.0 and 10.75:1
◙ S&S 640C/G: For engines of 95” or more with
compression ratios between 10.5:1 and 11.5:1
(used in S&S 124” engines)
◙ S&S 675G: For 120” or larger engines with at least 11:1 compression ratio
S&S Gear Drive Cam Specifications
Series
Valve Timing
Open/Close
Valve Duration
Open/Close
Intake
Exh.
Intake
Exh.
475G (stock)
2/34
36/4
216
220
510C/510G
20/38
52/20
238
252
Valve
Lift
Centreline
Lift @ TDC
Intake
Exh.
Intake
Exh.
.475”
106
106
.060”
.060”
.510”
99
106
.187”
.178”
546G
5/55
52/5
240
237
.546”
115
113.5
.126”
.106”
570C/570G
20/40
55/20
240
255
.570”
100
107.5
.187”
.179”
585C/585G
20/45
60/20
245
260
.585”
102.5
110
.186”
.179”
625C/625G
20/55
60/20
255
260
.625”
107.5
110
.189”
.184”
640C/640G
25/60
65/25
265
270
.640”
107.5
110
.228”
.214”
675G
25/64
70/25
269
275
.675”
109.5
112.5
.235”
.205”
Note: These specifications apply to all S&S cams regardless if they are chain or gear driven. Not all S&S cams are available
if geardrive and chaindrive versions.
1-6
PRESTON CYCLE PRODUCTS INC.
Twin Cam
S&S Gear Drive Cams for 1999-on BT
Engines with Stock Oil Pumps
S&S Gear Drive Camshaft Kits for 1999-on BT
Engines Meeting the Needs of High Performance Engines
The patented S&S gear drive cams are a must in order to
achieve the full potential from high performance Harley-Davidson Twin Cam 88 engines. Since the chain drive system used
in stock Twin Cam 88 engines is not adequate to accurately
control valve action at hih rpm when using high lift cams
and high performance valve springs, a different system was
needed. The S&S gear drive system was developed to improve performance and to eliminate potential engine damage
caused by failure of the chain and tensioner system.
Notes:
◙ Pinion shaft runout must be checked before installing S&S geardrive cams
◙ A hydraulic press and other professional tools are required to install S&S gear drive cams. Additionally, material must be removed from the inner surface of the stock gear cover. The stock crankcase will require clearancing for S&S .625”, .640” and .675” lift cams. S&S recommends that gear drive cams be installed by a professional mechanic.
◙ New cam bearings and a new gear cover gasket are required to complete installation. Gear drive cams for 1999-06 models require the use of ball bearing style
cam bearing, not stock roller bearing as they have more internal clearance which can cause excessive gear lash and increased noise. The correct parts are provided in S&S cam installation kit #335163.
◙ Due to the inherent characteristics of gear drives, you
may experience more valve train noise with gear driven cams. Oversized and undersized gears are available to help achieve correct gear lash. With 160 lb of valve seat force, the S&S gear drive cams will perform well up to 6200 rpm. If higher rpm is anticipated, valve springs that provide higher seat force should be used.
Improved Timing, Accuracy and Less Drag
S&S gear drive camshaft kits improve valve timing accuracy
by eliminating the timing chain lash as well as variations
caused by the loose fitting stock cam drive sprockets. All
stock chain drive components are replaced with S&S gear
drive cams and outer drive gears. This simple, effective solution reduces power loss by eliminating chain drag, and allows
more agressive cam profiles and increased valve spring force
to be used.
S&S Gear Drive Cams for 1999-on BT Engines with Stock Oil Pumps
Complete Kits
Cam
Cams with Inner Gears
1999-06*
2006 Dyna
2007-on All
1999-06*
2006 Dyna
2007-on All
475G (stock)
30600
N/A
30601
N/A
510C/510G
335177
335266
335174
335246
546G
335230
N/A
335236
N/A
570C/570G
335178
335267
335166
335247
585C/585G
335179
335268
335168
335248
625C/625G
335180
335269
335170
335249
640C/640G
335181
335270
335172
335250
Note: Complete kits include all parts needed for installation.
*except 2006 Harley-Davidson Dyna Models
Although several cam grinds were used in stock engines from 1999-06, the timing
specs for 475G cam is most similar to cams used in 1999-03 EFI engines.
Which S&S Gear Drive Cam Kit to Order?
◙ If updating from the stock chain drive
system, it is easiest to order a complete kit, which includes camshafts with inner gears, an outer cam drive gear kit and a camshaft installation kit whihc includes the S&S cam bearing retainer plate.
◙ If replacing cams in an engine already equipped with S&S gear drive cams, order a cam with inner gears and reuse the
existing outer gears. Separate purchase of a camshaft installation kit for appropriate model year is recommended.
◙ If installing a gear drive cam set without inner gears from another cam manufacturer, cam drive gear kit for appropriate model
year provides the inner cam gears as well as an outer cam drive gear kit. Separate purchase of a camshaft installation kit for appropriate model year is recommended.
S&S Oversize and Undersize Replacement Gears
Due to machining variations in the stock complete, oversized or undersized gears may be needed to acheive correct gear lash.
S&S Inner Cam Gears (Rear)
Oversize
S&S Pinion Gears
Undersize Fitment
73744*
73746**
73745
73747
These gears may halp eliminate gear noise.
1999-06 BT models except 2006
Dyna
PCP
Description
Over Pin
2006 Dyna and 2007 BT
73742
Pinion gear, oversize
2.1360 / 2.1369
73743
Pinion gear, undersize
2.1342 / 2.1351
*2.2461/2.2471 Over pin measurement using .125” pins
** 2.2441/2.2451 Over pin measurement using .125” pins
PRESTON CYCLE PRODUCTS INC.
(using .125” pin)
1-7
Twin Cam
S&S Twin Cam 88 Gear Drive Camshafts 1999-06 (except 2006 Dyna)
These cams increase valve timing accuracy in 1999-06 Twin Cam engines by eliminating timing chain lash and the loosely fit
stock cam gears. The chain, chain guides and tensioner are eliminated which negates the possibility of these parts failing and
damaging other parts. The kit also reverses the rear cam’s direction of rotation, providing additional operating clearance between cam lobes. Cam kit includes inner gears only. Outer cam drive gear kit must be ordered separately. Some modifications
are required to the stock gear cover and crank case on .625” and .640” lift cams.
PCP
S&S Gear Drive Cam Specifications
Valve Timing
Valve Duration
Centreline
Va l v e
Open/Close
Open/Close
Series
Lift
Intake
Exh.
Intake
Exh.
Intake
Exh.
570G
20/40
55/20
240
250
.570”
100.0
107.5
585G
20/40
60/20
245
260
.585”
102.5
110.0
625G
20/55
60/20
255
260
.625”
107.5
110.0
640G
20/60
60/25
265
265
.640”
107.5
107.5
Outer cam drive gear kit
Adjustable pushrod set
Lift @ TDC
Intake
.187”
.186”
.189”
.228”
Exh.
.179”
.176”
.184”
.221”
335166
335168
335170
335172
334276
935095
Note:
335166 is designed for 88-95 cubic inch engines with a compression ratio below 10:1
335168 is designed for 88-95 cubic inch engines with compression ratios from 10:1 to 10.75:1
335170 is designed for engines of 95 cubic inches or more with compression from 10:1 to 10.75:1
335172 is designed for engines of 95 cubic inches or more with compression from 10.5:1 to 11.5:1
S&S TC Cam Gear Drive Kit
S&S TC Camshaft Installation Support Kit
Includes front and rear inner cam gears, pinion gear and
outercam gear. Fits BT 1999-06 (not 2006-* Dyna).
334275
Kit includes replacement gear cover gasket, inner and outer
cam bearings and retainer ring for gear drive cams.
335163
1-8
PRESTON CYCLE PRODUCTS INC.
Twin Cam
S&S Easy Start Cams
How It Works
1
Each of the two exhaust cam lobes are equipped with a spring loaded
compression release lobe on the “heel” of the cam at the point where
the valve would normally be fully closed
2
The lobe holds the exhaust valve open slightly at cranking speed. This
releases some of the compression, making the engine much easier to
crank.
3
Once the engine starts, and RPM increases, the compression release
lobe is centifugally retracted and the engine runs normally, with full
compression, and without any loss in performance. This allows a stock
starter and battery to start nearly any engine
Start any Twin Cam engine regardless of displacement or
compression, even those with a stock starter, without running
down the battery. Available in chain or gear drive versions.
Kits include cams, cam installation kit and gear drive kit, when
required. Fully automatic, no buttons to push!
Twin Cam Easy Start Cams
Years
2007-on
2007-on
1999-06
Drive
Chain
Gear
Gear
Series
Three Most Popular Grinds
551
Bolt-in cams were designed with a grind to provide low end torque for
touring, a grind for maximum power and another for the best combination of torque and horsepower. Note: These cams were optimized
for use with stock headpipes and performance slip-on mufflers.
30620
30635
30605
570
30621
30636
30606
583
30622
30637
30607
585
30623
30638
30608
551 Torque Cam
625
30624
30639
30609
640
30625
30640
30610
675
N/A
30641
30611
Optimized for a 2007-on 96 to 106 CID touring bike with slip-on
mufflers and a 9.0 to 10.0:1 compression.
·Best bolt-in cam for Dressers
·Pulls hard from idle to 4000 RPM
583 Midrange Cam
Optimized for use as a great overall cam in the Softail, Dyna lines,
but can be used in any 2007-on BT model.
·Strong low end torque and horsepower you can feel
·Strongest from 1500-5000 in a Softail/Dyna application
585 Horsepower Cam
Optimized for a 2007-on Softail or a 2006-on Dyna 96 to 106 CID with
slip-on mufflers, high flow air filter and 9.0 to 10.5:1 compression
·Great results from 3000-6000 RPM
S&S Chain and Gear Drive Specifications for 1999-on Big Twins
Cam
Valve Timing
Open/Close
Valve Duration
Valve
Lift
Centreline
Lift @ TDC
Int.
Exh.
Int.
Exh.
Int.
Exh.
Int.
Exh.
551
15º/20º
39º/18º
215º
237º
.550”
92.5º
100.5º
.163”
.179”
583
8º/5º
60º/22º
204º
262º
.583”
92.5º
109º
.131”
.199”
585
20º/5º
60º/20º
245º
260º
.585”
102.5º
102.5º
.186”
.179”
Note: These specifications apply to all S&S chain and gear driven cams.
S&S 510 Chain Drive Camshaft Set for TC 88
Carb Models Only 1999-06 (except 2006 Dyna)
Specifications:
Int.
Exh.
Lift
.510”
.510”
Duration Open/Close Centreline TDC Lift
238
20/38
99
.187”
252
52/20
106
.178”
Camshafts are intended for “hot street” applications-lighter
motorcycles that can utilize significant power increases at
3000 RPM and above.
Recommend use of cam sprocket #288010.
335182 Cam set only
335175 Camshaft installation kit
PRESTON CYCLE PRODUCTS INC.
1-9
Twin Cam
Note: All Andrews cams for TC88 models require the
additional purchase of Andrews sprockets
Andrews Twin Cam 88 Gear Drive Camshafts
Andrews “G” series cams are designed for S&S gears to fit all Twin Cam engines 1999-2006,
except 2006 DynaGlides.
Tests show a 4 horsepower gain over similarly equipped chain drive engines so more power
gets to the rear wheel. Also gear drive cams do not have chain tensioner shoes to wear out.
When deciding what cam to use in your 88 engine the most important consideration is the
proper match between compression ratio and intake cam duration.
For best street performance, the static compression power should be around 175-180 PSI.
Drag motors can handle still higher static pressures. Lower static pressure of 160 PSI are
great for all around riding.
Touring and Performance Cams 1999-2006 (except ‘06 Dyna)
Duration ValveLift@
PCP# Grind Timing .053 .020Lift TDC SpringsApplication
30067 12G
30072
02/34
37/05
216
220
256 .474 .088 Stock
259 .474 .110
Bolt-in cam with similar specs to stock ‘06 Dyna cams.
Slight power increase -no retuning necessary.
21G
10/30 220 255 .498 .134 Stock
40/08 228 264 .498 .121
Runs great with fuel injectors or carburetors
Bolt-in cam w/more torque for all around riding with heavy
bikes. Intended for stock compression ratio and piston. Similar to #23 cam for EV80. (1700-5200 RPM)
30073 26G
11/35 226 262 .490 .138 Stock
41/09 230 266 .490 .112
Runs great with fuel injectors or carburetors
30068 31G
10/46 236 272 .510 .131 Stock
52/08 240 276 .510 .120
Bolt-in cam for 88-95 inches- stock compression ratio. Great for 2 up touring, this cam will add torque and HP at lower and middle RPM ranges. (1800-5500 RPM) 30069 32G
Hi-lift version of 31G. Much more power through RPM range
with 10:1+ CR.
10/46
52/08
236
240
272 .510 .131 Hi-lift
276 .510 .120
Great cam for motors with 95+ inches and 10:1 CR. Lower TDC lift means easy installation. Similar to 37G but different
timing. 2000-5800 RPM power range.
30074 37G
18/38 236 272 .510 .174 Stock
46/14 240 276 .510 .148
Runs great with fuel injectors or carburetors
Hot street cams for 88 or 95 inches. 80+ rear wheel HP
possible with well tuned 88 motor; more with 95. Smooth
idle, broad torque. (2200-5600 RPM). Stock to 9.5 CR.
30075
44G
21/41
49/17
242
246
279 .495 .182 Stock
283 .495 .158
For 88 or 95 inches and 9.25 CR or higher. Max torque and HP at mid and upper RPM. (2300-5800 RPM)
30076 50G
20/48
54/18
248
252
283 .510 .184 Stock
287 .510 .168
Easily installs in 95 inch motor with stock heads and 9.5 to
9.8 CR. (2400-6000 RPM)
30077 55G
22/46
52/20
248
252
283 .550 .197 Hi-Lift
292 .550 .181
Great cam for 95 inch engines with 9.8 to 10.2 CR. Max HP
and torque at mid and upper RPMs. (2600-6200 RPM)
30078 60G
24/56
58/22
260
260
296 .560 .205 Hi-Lift
296 .560 .205
For well prepped 95-103 inchers with 10.0 to 10.5 CR,
100+ HP is within reach. (2700-6500+ RPM)
30079 59G
29/57 266 303 .590 .238 Hi-Lift
Great cam for 95” motors with 10:1 CR or higher. Max
63/27 270 307 .590 .218
torque and HP at mid and upper RPM ranges. (2400-
6400+ RPM).
30080 64G
30/62 272 307 .640 .262 Hi-lift
High lift cam for modified 95 inch motors with 10:1 CR or
68/32 276 312 .640 .232
higher. Heads must be set for.700 lift and modified for max air flow. (3000-6500+ RPM)
The Following Three Cam Grinds Are Available for Gear Drive Systems Only!
288067 67G
24/48
252 287 .570 .209 Hi-lift
Performance cams for 95-107+ inches, 10.0 to 10.8 CR with 58/22 260 297 .570 .187
high flow head setup. (2600-6400+ RPM)
288059 59G
303 .590 .238 Hi-lift
307 .590 .218
Big for modified 95-116+ inch motors running 10:2 CR or higher. Max torque and HP (2700-6500+ RPM)
288064 64G
30/62 272 307 .640 .262 Hi-lift
66/30 276 312 .640 .232
* timing and duration listed for .053 cam lift
Big cams for modified 95-116+ inch motors running 10:2 CR or higher. Heads must be set for .700 lift and modified for max air flow. (3000-6500+ RPM)
1-10
29/57
63/27
266
270
PRESTON CYCLE PRODUCTS INC.
Twin Cam
Note: All Andrews cams for TC88 models require the additional purchase of Andrews sprockets
Andrews Twin Cam 88 Chain Drive Cams
Want more power from your 88 engine? Andrews Products
has eight proven Twin 88 grinds to get you there. More HP
and torque for stock or modified engines is within easy reach.
All cam grinds listed are designed for use with stock hydraulic
lifters. For any bolt in cam grind, we recommend EZ install
pushrods as they do not require removal of gas tanks or
rocker boxes for installation.
S&S High Performance Valve Spring Kits
Kits fit stock style and S&S Super Stock Heads on 1984-on
BT and 1986-on XL. O.D. of outer spring fits within stock
spring compartment. Used with “no shoulder” style valve
guides and special keepers fit stock 5/16” diameter stemmed
valves and S&S collars only (these guides can be retrofitted
to early BT V2 heads equipped with “shoulder” style valve
guides). Features patented steel top collars specially drilled to
lighten and allow oil to cool springs. Includes 4 of .015” and 4
of .030” shims. Kits are good for up to .630 lift
902077 Kit with steel top collars
902078 Kit with titanium top collars
Touring and Performance Cams Twin 88 1999-2006 (except 2006 DynaGlides)
Duration ValveLift@
PCP# Grind Timing .053 .020 Lift TDC SpringApplication
Stock
A
Carburetors
-02/38 216 257 .473 .072 Stock Listed for comparison (stock engine output is approx. 62HP)
36/04 220 260.473.110
Stock
B
Injectors
02/34
216
257 .473 .087
Stock Listed for reference. (stock engine output is approx. 62HP)
288121 TW21 10/30 220 255 .498 .134 Stock Bolt-in cam with more torque for all around riding with heavy
40/08 228 264 .498 .121
bikes, stock compression ratios and stock pistons. Similar to Great with fuel injector or carburetor.
#23 cam for EV80. (1700-4800 RPM)
288126 TW26a 11/35 226 262 .490 .129 Stock Bolt-in cam 88-95 inches and stock compression ratio. Great
41/09 230 266 .490 .112
for two up touring, this cam will add torque and HP at lower
Great with fuel injector or carburetor.
and middle RPM ranges. ( 1800-5200 RPM)
288137 TW37b 14/42 236 272 .510 .151 Stock Bolt-in cam grind with 80+ rear wheel HP. Smooth idle,
48/12 240 276 .510 .140
broad torque band. (2200-5800 RPM)
Great with fuel injector or carburetor.
288131 TW31S 10/46 236 272 .510 .151 Stock Great cam for motors with 95 inches and a 9.8 to 10.2 CR.
52/08 240 276 .510 .140
Lower TDC lift for easy installation. Similar to TW37 with Great with fuel injector or carburetor.
different timing. (2000-5600RPM)
288144 TW44
21/41
49/17
242
246
279 .495 .182 Stock For 88 and 95 inches, CR 9.5 to 10.2. Max. torque & HP at
283 .495 .158
middle and upper RPM ranges. (2300-5800 RPM).
288150 TW50
20/48
54/18
248
252
283 .510 .184 Stock Easily installs in 95” motors w/stock heads and 9.5 to 9.8 CR.
287 .510 .168
(2300 to 5800 RPM).
288155 TW55
22/46
52/20
248
252
283 .550 .197
292 .550 .181
Hi-lift
288160 TW60a 24/56 260 296 .560 .205 Hi-lift
58/22 260 296 .560 .205
* timing and duration listed for .053 cam lift
Great cams for 95 inch engines with 9.8 to 10.2 CR. Max HP
and torque at mid and upper RPMs. (2600-6200 RPM)
For well prepped 95-103 inchers with 10.2 to 10.5 CR and head work, 100+ HP is within reach. (2700-6500+ RPM).
PRESTON CYCLE PRODUCTS INC.
1-11
ANDREWS
Camshafts for all 2007-10 96” Engines and 2006 Dyna Glides
Camshafts on all 2007-* Twin 96” and Dyna engines use roller chain drives instead of silent chains.
Camshafts made for 1999-2005 engines will not fit
the 2006 Dynas or the 2007 Twin 96” engines. 2006
Road Glides, Road Kings, ElectraGlides and all
Softail models still run earlier silent chain drives. All
of the cam grinds listed below are designed for use
with stock hydraulic lifters. The Twin 96"bikes and
2006 Dynas will have the same performance characteristics as earlier bikes with similar cam grinds.
Matching EZ-install pushrod kits are also available
from Andrews Products. EZ-install pushrods do not
require removal of gas tanks or rocker boxes when
installing bolt-in camshafts.
Installation kit, gaskets & bearings
216902
PCP#
Grind
Timing
(*)
.053
.020
Valve
Lift
Stock
Intake
Exhaust
-3.5/40
41/-1.5
216.5
219.5
256
259
.474
.474
216321
216326
21H
26H
10/30
40/08
11/35
41/09
220
228
226
230
255
264
262
266
.498
.498
.490
.490
Lift
Spring
@TDC
.087
.110
.134
.121
.138
.112
Application
Stock
Stock ‘06 Dyna cam data listed for reference. All 2007 Twin 96” and 2006 Dynas
are fuel injected only; no carbs.
Stock
Bolt-in cams: 88” and 96”- more torque
for heavy bikes. Intended for stock compression ratios and pistons. Similar to
#23 cam for EV80.
1700-4800 RPM
Stock
Bolt-in cams: 88” and 96”- stock compression ratio. Great for two up touring;
this cam will add torque and HP at lower
and middle RPM ranges.
1800-5200 RPM
216331
31H
10/46
52/08
236
240
272
276
.510
.510
.131
.120
Stock
Great cam for motors with 95+ inches
and 10:1 CR. Lower TDC lift for easy
installation. Similar to 37G cam but with
different timing.
2000-5800 RPM
216332
32H
10/46
52/08
236
240
272
276
.570
.570
.131
.120
High Lift
High lift version of 31H. Much more
power thru RPM range with 10:1+ compression pistons. (2800-5600 RPM)
216337
37H
18/38
46/14
236
240
272
276
.510
.510
.174
.148
Stock
Hot street cams for 88”, 96” or 103”. 80+
Rear wheel HP possible with well tuned
motors, more with 96”. Smooth idle,
broad torque Stock to 9.5 CR.
2200-5600 RPM
216344
44H
21/41
49/17
242
246
279
283
.495
.495
.182
.158
Stock
For 88”, 96” or 103” and a 9.5+ CR. Max
torque and HP at mid and upper RPM.
2300-5800 RPM
216350
50H
20/48
54/18
248
252
283
287
.510
.510
.184
.168
Stock
Designed for easy installation in 96-103”
motors w/stock heads and 9.5 to 9.8 CR.
2400-6000 RPM
216355
55H
22/46
58/22
248
252
283
292
.550
.550
.197
.181
Hi-Lift
Great cams for 95-103” engines with 9.8
to 10.2 CR. Max HP -torque at mid and
upper RPMs.
2600-6200 RPM
216360
60H
24/56
58/22
260
260
296
296
.560
.560
.205
.192
Hi-Lift
For well prepped 95-103” with 10.0 to
10.5 CR, 100+ HP is within reach
2700-6500+ RPM
(*) Timing and duration listed for .053 cam lift
1-12
PRESTON CYCLE PRODUCTS INC.
Twin Cam
Andrews Outer Drive Gear TC Cam Installation
Andrews TC Gear Drive Installation Kit 99-06
The gaskets and bearings shown are necessary to complete
the installation of gear drive camshafts.
288901
This kit includes the crankshaft and cam drive gears for
a gear drive installation. Both bolts for the gears are also
included.1999-06
288903
Andrews Complete Drive Gear Cam Installation
This kit fits Twin Cams and includes all 4 cam drive gears with
installation bolts. 1999-06
288908 Complete kit of crank and cam drive gears
288905 Two inner cam drive gears only
Andrews TC 88 Rear Cam Sprocket Kit 99-06
All Andrews Twin 88 cam kits require a heat treated 34T rear
cam drive sprocket that replaces OEM 25563-99. Sprockets
are made from heat treated alloy steel and are longer than
stock providing greater stability. Includes a full length 3/16
drive key and 3 spacer shims that allow the installed length
of new sprocket to be the same as the original stock sprocket
plus spacer.
PCPDescription
288010 Keyed 34T cam sprocket kit
288015 Splined 34T cam sprocket kit
288020 17T Crank sprocket kit
TC Outer Cam Bearings 1999-06
PCPApplication
15746 Set of 2 outer bearings (8990A)
15629 Set of 2 Torrington inner bearings
15630 T/L set of 2 INA inner bearings (9198)
Chrome Maltese Cross Covers for Twin Cam
PCP
59185
59187
CoverType
Derby 5 Hole
Points 5 Hole
James Quick Change Cam Kit
79540 25244-99-K
PRESTON CYCLE PRODUCTS INC.
1-13
Twin Cam
Twin Cam Cylinder Studs 1999-on
10847 16834-99A (4 pk)
312340 S&S (8 pk)
72083 Colony (8 pk)
Jims Twin Cam Stroker Kits (Not “B” Models)
The TC flywheel assemblies feature an integral pinion shaft,
sprocket shaft, and crankpin for maximum stability and resistance to flywheel distortion. Each kit is press fit with Jims bullet
proof H-beam forged connection rods, and pre balanced by
Jims with Arias pistons. Like all Jims flywheel assemblies,
forged blanks are used in replacement of conventional billet
material and are fully machined on the latest CNC mills and
lathes. Additionally, Jims offers these kits with cast aluminum
cylinders. These cylinders are available with plain or black
wrinkle finish and various bore sizes and stroke lengths. The
combination of a 3 piece flywheel assembly, forged connecting rods and aluminum cylinders equates to an unbeatable
performance package.
*All kits use 8-1/2” flywheels.
PCP SizeStrokeBore
58057 116” 4-5/8” 4” STD
58058 116” 4-5/8” 4” STD
Finish
Black wrinkle
Plain
Sprocket Shaft Spacers
For BT models 1998-02
PCPYears
11828 1998-99 BT
11829 1999-02 BT
Chrome Crank Sensor Cover
Includes mount screw.
44070 1999-on FXD-FLT
Twin Cam Bearings 2000-06
PCPApplication
15757 R/cam with inner race (8983)
15758 R/S balance shaft
1-14
PRESTON CYCLE PRODUCTS INC.
Twin Cam
S&S Hot Set Up Kits for TC Style Engines
Carb, cam and pushrod Hot Set Up are the most economical and the easiest to install. They are intended for 88” and
95” engines with stock cylinder heads and valve springs, and
yield the most power per dollar spent. Both PCP #110025
and #110026 kits contain a Super E carburetor kit and an
S&S pushrod kit. The difference between the two kits is that
#110025 contains a 510C chain drive camshaft kit, while
#110026 has the 510G gear drive camshaft kit. Gains of 20
hp have been measured with #110025 kit when installed with
performance exhaust and ignition module.
Kit
110025
110026
Engine
88”, 95”
88”, 95”
Cam Carburetor
510C Super E
510G Super E
Cam Drive
Chain
Gear
S&S 106” Hot Set Up Kit for TC 88 1999-06
Use this kit to gain performance on Twin Cam 88 and 88B
engines. Kits allow you to build a 106” carbureted or fuel injected motor using your stock cylinders and without modifying
your crankcase. Pistons and fuel system are sold separately.
Kits include 4-1/2” stroke flywheels, a 585 gear drive cam kit
with gears and high flowing Super Stock cylinder heads with
79cc combustion chambers. Kits also include rocker covers, electric compression releases, chrome moly pushrods,
gaskets and seals. An S&S Super G or S&S Variable Fuel
Injection System and either a set of S&S stroker pistons with
3-7/8” bore 9.8:1 CR or a piston and cylinder set must be
purchased separately to complete the engine. Stock 88” cylinders can be bored from the stock 3-3/4” to 3-7/8”. For those
who prefer, S&S also offers 3-7/8” replacement cylinders.
PCP EngineFinish
900150 TC88Silver
900151 TC88 Black powdercoat
900152 TC88BSilver
900153 TC88B Black powdercoat
S&S TC Super Sidewinder Hot Set Up 116” Kit
All 116” kits include S&S 4 5/8” stroker flywheel assemblies,
4” bore cylinders and pistons, S&S Super Stock Twin Cam
style cylinder heads, compression releases, rocker covers,
gear drive cam kit, chrome moly steel pushrods, and required
gaskets. Purchase either a Super G or VFI system separately.
Stock crankcases must be bored to accept the 4” big bore
cylinders. Stock cylinder studs and stud pattern are retained.
1999-02 “A” style engines (w/o balancers)
NaturalBlack Stroke C/Ratio Cam
9001569001574 5/8”
10.4:1
625G
2000-02 “B” style engines
9001589001594 5/8”
10.4:1
625G
S&S 92-1200 Series Pistons
PCPSize
921200
STD
921204
+.005
921201
+.010
921202
+.020
91704695” Cylinder and piston kit w/natural finish
91704795” Cylinder and piston kit w/black finish
PRESTON CYCLE PRODUCTS INC.
1-15
S&S 124” Hot Set Up Kit for Twin Cams
Both kits are available in natural aluminum or black powdercoat finish, and include the following parts: S&S 4-1/8” bore
cylinders and pistons, an S&S 4-5/8” stroke flywheel assembly for either Twin Cam or Twin Cam B engines, a set of S&S
.640 gear drive cams, and all required hardware, gaskets and
instructions.
To complete the engine an S&S Super G carburetor must
be purchased separately.
S&S Super G Carb Kit for 124” Hot Set Up Kits
110531
S&S 124” Hot Set Up Kit for Twin Cams
The S&S 124” Hot Set Up kit for Twin Cams allows a Twin
Cam owner to convert a stock 88” engine to 124” using the
stock crankcases. There are several advantages to installing
this kit as opposed to installing a complete 124” S&S engine.
The first advantage is that you don’t have to pay for a complete engine. Many of the stock engine components such as
the crankcases, oil pump, cam cover, and tappets are reused,
saving hundreds of dollars. Another consideration is that
since the stock crankcases are used, the engine will retain the
original serial numbers.
There are two versions available. The first, which is highly
recommended, features S&S 91cc cylinder heads and a
compression ratio of 10.8:1. This kit will provide the best
performance and will be easier to start due to the S&S electric
compression releases. The second version contains a dished
piston designed to provide a 10.4:1 compression ratio with
stock cylinder heads. While this kit is the most economical
choice, the stock cylinder heads will not provide the level of
performance, and may present starting difficulties due to the
lack of compression releases.
124” Hot Set Up Kits for Twin Cams
Kits include S&S Super Stock cylinder heads.
PCPEngine Finish
900130
Twin Cam
Natural
900132
Twin Cam
Black
900134
Twin Cam “B”
Natural
900136
Twin Cam “B”
Black
124” Hot Set Up Kits for Twin Cams
For models with stock cylinder heads.
PCPEngine Finish
900131
Twin Cam
Natural
900133
Twin Cam
Black
900135
Twin Cam “B”
Natural
900137
Twin Cam “B”
Black
Note: It is recommended to select a fuel system to match the
type of fuel system presently on your motorcycle.
Timken Bearing Sleeve
Will convert 2003 and later TC-88 models from a roller bearing to a Timken tappered bearing. Bearing sold separately.
73753
A simple operation will make stock
crankcases accept 4-1/8” bore
cylinders.
1-16
Topline Crankshaft Bushing
Twin Cam 1999-on
18613 25344-99 (each)
PRESTON CYCLE PRODUCTS INC.
S&S Twin Cam Flywheel Assemblies
S&S 106” Stock Bore Stroker for Twin Cam “A” Available as complete assemblies only to fit TC 88 and TC
This S&S 4-1/2” stroke flywheel assembly with S&S 3-7/8”
bore pistons for a displacement of 106 cubic inches. This is a
perfect upgrade for standard Twin Cam 88 and 88B engines
with internal balancers. Installation of the kit does not require
any special machining, other than fitting the pistons. This kit
requires special 92-1210 forged S&S stroker pistons that
must be purchased separately. Stock 88” cylinders can be
bored from 3-3/4” to 3-7/8” to accomodate the S&S pistons
or prefit S&S cylinder and piston kits are available. Engines
with factory 95” kits require piston fitting only. Stock or S&S
cylinder heads can be used. Fuel injected engines will require
remapping of the fuel injection systems. With stock H-D
heads the compression ratio is 10.1:1, with S&S 89cc heads
the compression ratio is 9.8:1. This kit includes assembled
flywheels and piston oilers only. Engines with strokes over 4”
may require S&S piston oiling jets and piston to jet clearance
notches in the piston skirt to avoid contact.
88B engines with Timken style sprocket shaft bearings. Will
fit directly into stock H-D 1999-02 only TC style crankcases
and in all S&S crankcases for Twin Cam style engines with
no modifications. Complete flywheels can be used as stock
replacement but individual pieces can not be used as direct
stock replacement to rebuild stock flywheels. The kit features
a smaller than stock 1.500” crankpin in order to allow the use
of replaceable bearing races in the lower end of the connecting rod.
Displacement
Stroke
TC 88
TC 88B
88”, 95”, 100”
4”
322240
322241
106”
4-1/2”
322242
322243
107”
4-1/4”
322244
322245
116”
4-5/8”
322246
322247
Engine Stroke Bore Cyl. Length Application
106”
4-1/2” 3-7/8”
Stock
Trips
PCPModel
322490 TC 88A 1999-06, except 2006 Dyna
322491 TC 88B 2000-06
Important Note:
S&S does not produce a set of flywheels that is a direct
replacement for the 2003 and later Big Twin engines. Stock
2003-on engines use the same roller type bearing for the
sprocket shaft that is used on the pinion shaft. However, S&S
flywheels may be used in 2003-on engines with the installation of H-D bearing kit #24004-03A. These crankcases use a
roller type bearing for the sprocket shaft. Verify that the bearing kit contains the 24604-00D or 24607-07 sprocket shaft
bearing. Do not use #24604-00, 24604-00A, 24604-00B or
24604-00C bearing.
S&S TC Pinion Bearing
Fits 2001-02 Softails, 2001-on
balanced stock Twin Cam 88B engines, all 2003-on stock engines
and all Twin Cam style engines
built with S&S crankcases. S&S
does not recommend using this
bearing in sprocket shaft applications in 2003-on engines.
314085
Complete 88” Flywheel Assembly-(USA Made)
Shipped complete and assembled as pictured but trueness
must be checked before assembly of motor.
58048 1999-06 FLT, Dyna, FLHR Twin Cam (23957-99E)
58051 2002-06 Touring with thrust washer & inner race (23904-03)
58052 Touring 2007-on (23729-07)
58049 2000-04 Softail Twin Cam B (23912-00A)
58050 2005-06 Softail Twin Cam B (23971-03B)
58053 2007-on 96” Softail Twin Cam B (23912-07)
Left Bearing Kit
Fits 2003-on TC-88 left side crank
shaft.
15761 (24003-03A)
PRESTON CYCLE PRODUCTS INC.
1-17
Twin Cam
Hydrosolid Tappet
This tappet performs like a hydraulic
tappet from start up to about 5500 rpm
and then turns into a solid from 5600
rpm on. When solid it adds 3-6 more
useable horsepower. When springs
start to surge the tappet rollers start
lofting off the back side of the cam and
will not pump up allowing you valves to
hit. Must use adjustable pushrods.
PCPApplication
31647 TC, XL 2000-on OD .8425”
31650 1/4” longer TC, XL 2000-on OD .8425”
Jims Twin Cam Powerglide II Tappet
The next generation tappets from Jims for big power, big
torque and increased spring weight, feature a hand honed
hydraulic cavity for reduced valve train noise. Advantages of
Powerglide II:
•billet body with premium hydraulic unit
•30% increase in dynamic load capacities
•10% increase in lubrication capacity for hydraulic unit & top end
•100% increase in lubrication capacities for roller, cams, & cam bearings (increases cooling)
PCPFitment
31641 TC 1999-on, XL, Buell 2000-on (STD O.D. .8420”)
31642 Oversize +.001
31643 Oversize +.0015”
31648 Oversize +.005”
Tappet Body BT 1999-on Twin Cam
29007 T/L 1999-on (18538-99B)
S&S Special Piston Cooling Jet Kit
S&S High Performance Tappets for Twin Cam
These tappets are standard equipment in the S&S complete
124” Twin Cam engine and are a good choice for any stock or
high performance application.
335351 Set
Twin Cam engines with strokes greater than stock, require
special piston cooling jets to avoid contact with pistons at the
bottom of the stroke. S&S cooling jets provide an extra .150”
of clearance between the jet and piston skirt compared with
stock jets. These special jets are included in the S&S 107”
and 116” Twin Cam Style Sidewinder kits, Hot Set Up kits and
in the new S&S Super Sidewinder Plus Long Block Engines.
S&S piston cooling jets are sold in kits of two jet assemblies
with o-rings and screws.
312026
Crank Sensor 1999-on TC-88
29540 37207-01A
1-18
PRESTON CYCLE PRODUCTS INC.
Twin Cam
Sonnax Twin Cam Rod Roller Kit
15801
S&S Twin Cam Connecting Rods 1999-on
Designed for use with S&S Twin Cam and Super Sidewinder
Plus style flywheel assemblies. The set includes 1.500” diameter pressed in style crankpin, rod bearing assembly and front
and rear connecting rods.
347405
Sprocket Shaft Seal Spacer
Replaces 24008-03 for Twin Cam 2003-06.
18014
Twin Cam Piston Pin Bushing
Twin Cam bushings are sold in pairs and have an O.D. of
1.020”. Replaces 24316-99 on all Twin Cam models.
18637 T/L
31356 Jims
Main Bearing 2003-on
15521 24605-07 (each)
Drive Components
PCPApplication
30035 Cam chain tensioner 1999-05 (39954-99)
30037 Secondary cam chain tensioner (39964-99)
T/L Cam Drive Components 2006-on
PCPApplication
29146
Secondary cam drive chain (25683-06)
29147
Camshaft sprocket (25673-06)
29148
Primary cam drive chain (25675-06)
29170
Primary cam chain tensioner (39968-06)
29171
Secondary drive chain tensioner (39969-06)
29172
Cam support plate with bypass (25355-06)
29174
34T Cam drive sprocket (25728-06)
PRESTON CYCLE PRODUCTS INC.
1-19
Twin Cam
PCP OEM Description
1 10103 601
Roll pin 2 9946 4740A
Chr/allen screws
3 15757 8983
Outer cam bearing
4 15746 8990A
Outer cam bearing
5 15629 9198
Inner cam bearing
15634 9215
Inner cam bearing
6 11016 11031
Retaining ring,
7 14587 11286
O-ring, oil pump
8 1459111293
O-ring
9 14593 11298
O-ring, viton, plug
10 1459411301
O-ring
11 11021 11494
Retaining ring
12 15747 24623-99C R/S main bearing
15520 24604-00C R/S main bearing
15522 24605-07 R/S main bearing
13 25938 25244-99A Gasket, cam cover
14 64808 25247-99 Chrome cam cover
64821 25369-01A Chrome cam cover
45475
Preston, as above
15 29153 25267-99B Cam support plate
29172 25355-06 As above
16 18613 25344-99 Bushing, crankshaft
17 24101 25533-99A Sprocket retension
24103 25566-06 Sprocket retension 18 29037 25607-99 Chain, secondary
29146 25683-06 Chain, secondary
19 29154 25609-99 Sprocket, 17T
29147 25673-06 Sprocket, 17T
Year
99-05
99-*
99-05
99-05
99-05
06-on
99-on
99-*
99-*
99-*
99-*
99-*
1999
00-06
07-*
99-*
99-00
01-08
01-08
99-05
06-*
99-*
99-05
06-*
99-05
06-*
99-05
06-*
U/M
10
kit
ea
ea
pair
pair
10
10
10
10
10
10
ea
ea
ea
5
ea
ea
ea
ea
ea
ea
kit
kit
ea
ea
ea
ea
PCP OEM Description
Year
20 29038 25610-99 Chain, primary drive 99-05
29148 25675-06 Chain, primary drive 06-*
21 11899 25729-06 Cam drive spacer .10006-*
11900 25731-06 As above .110
06-*
11901 25736-06 As above .120
06-*
11902 25736-06 As above .130
06-*
11903 25737-06 As above .140
06-*
11904 25738-06 As above .150
06-*
22 29069 26035-99 Oil pump assembly
99-05
29149 26037-06 As above
06-*
23 13010 26210-99 Relief valve spring
99-*
24 30113 26400-82B Oil pump relief valve 99-*
25 29155 26464-99 Pressure, geo-rotor 99-05
26 45307 32679-99 Chrome sensor cover 99-*
27 11111 35115-01 Retain/ring m/bearing 99-01
11112 35114-02 As above
02-*
28 29158 39954-99 Prim/chain tensioner 99-05
30035
Preston, as above
99-05
29170 39968-06 Prim/chain tensioner 06-*
30036
Preston as above
06-*
29 29159 39964-99 Sec/chain tensioner 99-05
30037
Preston, as above
99-05
29171 39969-06 Sec/chain tensioner 06-*
30038
Preston, as above
06-*
30 29160 39965-99 Chain guide
99-05
31 9954 68042-99 Point cover screws
99-*
Tappet Oil Screen
Includes 24983-00 screen
and 11301 o-ring for 2000-on
Softail.
72284
1-20
PRESTON CYCLE PRODUCTS INC.
U/M
ea
ea
5
5
5
5
5
5
ea
ea
10
ea
ea
ea
10
10
ea
ea
ea
ea
ea
ea
ea
ea
ea
5
Twin Cam
Outer Cam Support Plate BT 1999-on
29153 25267-99B
T/L Billet Cam Plate & High Volume Oil Pump
Kit includes billet cam support plate, oil pump assembly,
bearing retainer plate and chain guide riser. Upgrades early
model stock or large displacement performance Twin Cam
engines. Stock on 2007-on Twin cam 96 models High flow
rate/high scavenge rate oil pump improves the stock oiling
system to increase oil flow to piston oil jets, cam chain tensioner, pinion shaft bearings and connecting rod bearings. Increased oiling results in lower engine operating temperatures
and increased performance. Precision machined from 6061
aluminum and anodized for durability, kit comes preassembled with crankshaft bushing and oil pressure relief valve.
29810 Touring 1999-06, Dyna 1999-05, Softail 2000-06 (25284-08)
TC-88 Oil Bypass Shim
Delkron Cam Support Plate for Twin Cam
Features optimized oil passages for better oil distribution and
high tolerance dowel locations for a more precise cam bore to
bore location.
32568
Machined shim assures proper
spring pre load improving oil
pressure and volume.
73606
TC-88 Oil Pump
Alignment Tool
Tapered tool threads into the
oil pump and perfectly aligns
the pump to the cam plate.
Use on all TC-88 engines.
5894
Sifton Twin Cam Super Pump
Utilizes an oversized highly efficient geo rotor design. Provides a 40% increase in pump volume and 60% more scavenging volume. This high volume pump bolts into the stock
location and includes o-rings and mounting hardware.
PCPApplication
21855
Hi Flow (+)
T/L TC Oil Pump Assembly 1999-on
PCPYears
29069 1999-05 (26035-99)
29149 2006-on (26037-06)
PRESTON CYCLE PRODUCTS INC.
1-21
Twin Cam
Chrome Cam Covers
These form fitting chrome steel covers fit over stock cam
cases. No need to remove cam case or disturb cams or
gears. Covers are held in place by existing screws.
45411 2000-on Big Twin
Twin Cam Chrome
Timer Cover
45307
9953
9954
TC Cover (32679-99)
Chr. acorn screw kit
Chr. button head screw kit
Twin Cam Chrome Cam Cover
PCPApplication
64808 T/L 1999-00 FLT, FXD and 2000 FXST (25247-99)
45336 Preston, as above
64821 T/L 2001-09 FLT, FXD, FXST (25369-01A)
45475 Preston, as above
9945 Acorn screw washer kit
9946 Chrome knurled allen screw kit
24470 Chrome polished allen screw kit
TC Cam Service Kit
Includes all necessary parts for a cam service.
25933 T/L kit (17045-99C)
S&S Billet Twin Cam Style Gear Covers
Machined from solid aluminum billet and polished to a show
finish, the S&S gear covers offer a distinctive look for your
bike. The styling is identical to that of gear covers supplied
in the S&S Twin Cam style oil pumps. Note: S&S billet gear
covers are not compatible with 1999-01 model engines which
require a cam position sensor in the gear cover.
316516
1-22
Oil Seal Sprocket Shaft
14078 1999-on (12068)
PRESTON CYCLE PRODUCTS INC.
Twin Cam
Chrome Maltese Cross Covers for Twin Cam
T/L Chrome Slotted Timer Cover
The deep-dish chrome cover features stainless steel mounting hardware and a slotted design with black-out background.
63043 1999-06 Twin Cam models (32102-01)
PCP
59185
59187
CoverType
Derby 5 Hole
Points 5 Hole
T/L Chrome Slotted Derby Cover
This deep-dish chrome cover features stainless steel mounting hardware and a slotted design with black-out background
that upgrades the appearance of any open primary system.
63042 1999-06 TC models except Touring (25345-01)
All Out Flame Chrome Timing Cover
Features no visible mounting fasteners and a 3-D flame
design. Available in offset or centre flame design to fit all Twin
Cam models.
PCP TypeFit
59710 Offset TC
59711 Centre TC
Chrome Skull Design Points Cover
45416 1999-on TC
Chrome Billet Flying Wheel Point Cover
Chrome Live To Ride Timing Cover
45417 1999-on Late TC (32559-99)
45062 1999-on TC
PRESTON CYCLE PRODUCTS INC.
1-23
S&S TC Cylinder Kits
S&S 92-1210 Series Pistons and 3-7/8” Bore
Twin Cam Style Cylinders
The 92-1210 series pistons are forged, 3-7/8” bore, Twin Cam
style stroker pistons for use with stock HD or S&S Super
Stock cylinder heads. These pistons are designed to be
used in conjunction with 4-1/2” stroke flywheels to increase
displacement of stock Twin Cam 88 engines to 106”. Stock
Twin Cam 88 cylinders may be bored from 3-3/4” to 3-7/8” or
new 3-7/8” bore cylinders may be purchased. Cylinders are
available in natural aluminum and black powdercoat finish.
No crankcase machining is required to install S&S 3-7/8”
bore Twin Cam style cylinders.
Displacement: 106”
Stroke: 4-1/2”
Bore: 3-7/8”
Cylinder Length: 4.937”
Compression for Stock heads: 10.1:1
Compression for 89cc heads: 9.8:1
Compression for 79cc heads 10.4:1
Recommended piston fit for forged pistons:
Close: .0020” - .0025”
Loose: .0032” - .0045”
Piston deck height: 1.270”
Cylinders
Cylinder with piston kits include cylinders, piston kit, head
gaskets, base gaskets and exhaust gaskets.
Item
NaturalBlack
Cylinders only
917044917045
Cylinders with pistons
917060917061
Replacement Piston Kits
All piston kits include rings, wristpins and clips.
Piston Kits Forged
Moly Rings
Standard
921210941295
+.005
921214941299
+.010
921211941296
+.020
921212941297
S&S 4-1/8” Bore Twin Cam Style Cylinders and
92-1556 Series Pistons for 124” Engines
The 92-1566 series pistons are 4-1/8” bore pistons originally
designed for the S&S Super Sidewinder Plus V2 style engine,
may also be used in 4-1/8” bore Twin Cam style cases.
Displacement: 124”
Stroke: 4-5/8”
Bore: 4-1/8”
Cylinder Length: 5.013”
Compression for Stock heads: 10.8:1
Recommended piston fit for forged pistons:
Close: .0020” - .0025”
Loose: .0032” - .0045”
Piston deck height: 1.050”
Cylinders
Cylinder with piston kits include cylinders, piston kit, head
gaskets, base gaskets and exhaust gaskets. These cylinders are designed to be used with the S&S 4-1/8” bore
Twin Cam style crankcase. This crankcase has a 6” cylinder
deck height.
Item
NaturalBlack
Cylinders only
917076917079
Cylinders with pistons
917096917099
Replacement Piston Kits
All piston kits include rings, wristpins and clips.
Piston Kits Forged
Moly Rings
Standard
921556941400
+.010
921557941401
+.020
921558941402
+.030
921559941403
S&S TC Cylinder Studs
Used in S&S Twin Cam style crankcases.
312325 16834-99 (each)
312340 As above (8 pk)
1-24
PRESTON CYCLE PRODUCTS INC.
S&S TC Cylinder Kits
S&S 106” Big Bore Kits for 2007-on Big Twins
S&S Twin Cam Pistons & 3-7/8” Cylinders-95”
The 92-1200 series pistons are forged 3-7/8” big bore Twin
Cam style pistons for use with stock H-D or S&S Super Stock
cylinder heads. These pistons are designed to increase displacement of stock Twin Cam 88 engines to 95” and have a
5.3cc “pop up” dome for a slight compression increase. S&S
cylinders are available in natural aluminum and black powdercoat finish. No crankcase machining is required to install S&S
3-7/8” bore Twin Cam style cylinders. Cylinder kits include
cylinders, piston kit, head gaskets, base gaskets, and exhaust
gaskets. All piston kits include rings, pins and clips.
Features:
-95” Displacement
-4.937” Cylinder length
-1.270” Piston deck height
-4” Stroke with 3-7/8” Bore
-9.7:1 Stock compression
-No assembly required
NaturalBlack Description
917044917045 Cylinders only
917046917047 Cylinders with pistons
Replacement 92-1200 Series Piston Kits
ForgedMoly
Pistons Rings Size
921200941290 Standard
921204941294 +.005
921201941291 +.010
921202941292 +.020
Use these kits for an easy way to get more displacement without rebalancing flywheels or boring the crankcases. Cylinders
can be swaped out without boring or splitting the cases. S&S
suggests that these 3.927” bore cylinders have the largest
bore that can be safely used with stock spigot diameter. S&S
cylinders are made from a strong material that performs better
than stock cylinders and S&S does not recommend boring
stock cylinders to fit the 3.927” pistons.
This kit yields excellent results with stock cylinder heads,
but a performance cam is recommended to get the best
performance and to make the engine easier to turn over
and start-up. However, for the best performance and easiest
starting, S&S recommends S&S cylinder heads which provide
increased head flow and increased power. Additionally S&S
heads are machined to accept S&S electric or manual compression releases for easy, reliable starting.
For most applications S&S recommends the S&S single bore
EFI throttle body with a teardrop air cleaner or tuned induction. 2008-on Touring models will need to use the stock intake
or Screamin’ Eagle® 58mm throttle body and race tuner or
Pro EFI Super Tuner.
Features:
- 106” Displacement
- 4-3/8” Stroke
- 3.927” Bore
- 10:1 CR using stock heads
- 9.7:1 CR using S&S 89cc heads
- Choice of silver or black wrinkle powdercoat to match stock
KitFinish
950008 Silver
950009 Black powdercoat
PRESTON CYCLE PRODUCTS INC.
1-25
TC Cylinder Kits
S&S BT Evo 106” 3-7/8” Natural Cylinders
917044
Pairs
Jims Twin Cam Cylinders and Piston Kits
100” to 117” Cylinder and piston kits feature larger bore
cylinder and pistons. Designed to be used with original Twin
Cam flywheel sets and engine cases. Kits include a pair of
Jims proven VHR technology black or silver cylinders that fit
original OEM stud bolt pattern. Premium forged piston set
with rings use .927” pins with Jims’ piston jets (if required),
per kit size. Complete instructions included. Order gaskets
separately.
100” Alpha 1999-06, Beta 2000-06 w/HD Flywheels
• 4” Stroke
• 4” Bore • 4.915” Cylinder length
•9.56:1 compression with stock HD 85cc head
PCPFinish
31701
Black
31700
Silver
106” Alpha 1999-06, Beta 2000-06 w/HD Flywheels
• 4” Stroke
• 4.125” Bore • 4.915” Cylinder length
•10:1 compression with stock HD 85cc head
PCPFinish
31702
Black
31703
Silver
VT 95” TC-88 Big Bore Kits
Available in choice of black wrinkle or silver finish. These
cylinder sets will increase TC-88 engines to 95 cubic inches.
No crankcase machining required for installation. Cylinder kits
include pistons prefitted to cylinders with head gaskets.
10.25:19:1
Cast Forged Finish
-
34836
Black
3483734838Silver
110” Alpha 2007-on with HD Flywheels
• 4.375” Stroke • 4” Bore •5.018” Cylinder length
•10:1 compression with stock HD 85cc head
PCPFinish
31704
Black
31705
Silver
117” Alpha 2007-on with HD Flywheels
• 4.375” Stroke • 4.125” Bore •4.915” Cylinder length
•10.5:1 compression with S.E. 95cc head
PCPFinish
31706
Black
31707
Silver
Sifton Cylinder Kits
9.3:110.5:1
Cast* Forged Finish
3483934840Black
3484134842Silver
* 9.3:1 Sifton cylinder kits have moly coated pistons
1-26
PRESTON CYCLE PRODUCTS INC.
Colony Cylinder Base
Stud Kit TC 1999-on
Heat treated alloy steel studs
equal or surpass original equipment.
72083 Twin Cam 88 1999-on
(8 pack)(16834-99)
Twin Cam
Topline Stock Finish TC Cylinder 1999-06
Each cylinder kit includes 1 piston with rings, pin and clips.
Available in either silver or black finish. Each.
65223 Silver (16525-99)
65224 Black (16526-99)
V-Twin TC Big Bore Cylinder & Piston Kit
Use these kits to increase Twin Cam engines to 95 cubic
inches. No crankcase machining required for installation.
Cylinder kits include pistons prefitted to cylinders and head
gaskets.
PCPFinish
53072 Black
53073 Silver
Twin Cam Hastings Piston Ring Sets- Moly
Twin Cam rings are sold in sets to do 2 pistons (1 engine).
Moly
Ring
Size
Engine Type
96” TC 2007-on
88” TC
95” BB TC
STD
35271
35275
35279
.005
35272
35276
35280
.010
35273
35277
35281
.020
35274
35278
(1584cc)
Topline TC 95 BB Cast Piston Kits, 1999-06
Kits for carbureted models include two pistons, rings, clips,
and pins. Available in flat top 9.3:1 compression ratio or a
high compression 10.25:1 ratio.
9.3:1 10.25:1Size
6523065235 STD
6523265237 .010
79993 James gasket kit .046 head 99-04 (17052-99-X)
79998 James gasket kit .045 head 05-09 (17052-05-X)
25932 Head gaskets (pair) .055 for 1550cc (16787-99)
Topline TC 88 Pistons
VT 107” TC-88 Big Bore Cylinder Kit
Requires case machining and includes a forged 10.5:1 piston
kit. Choice of silveror black highlighted cylinders.
PCPItem
34804 Black Kit
34805 Silver Kit
35578 Piston only
25408 Top end gasket kit
Each kit includes 1 piston, 1 set of rings, pin and clips.
PCPDescription
65246 STD (21930-99)
65247 +.005 (21931-99)
65248 +.010 (21933-99)
Piston Service Components
11056 Lock ring (22097-99) (10 pk)
32357 Piston pin (22132-99) (each)
18637 Piston pin bushing (24316-99) (pair)
31356 Jims, as above (each)
PRESTON CYCLE PRODUCTS INC.
1-27
Twin Cam
Wiseco Twin Cam 96 BB Piston Kit 2007-10
Kits include 9:1 compression reverse dome forged pistons,
Hastings rings, retainer clips and chrome piston pins. Hastings rings have a .0472” top and 2nd ring and a .118” oil ring.
1691cc Big bore kit (103 cu. in.) fits Twin Cam 96 2007-10
and also fits Twin Cam 88 1999-06 with 4-3/8” Stroker Crank.
Recalibration and cylinder boring is required. Skirt coated
pistons have a dome volume of -11.5cc.
PCP
Displ.
Bore
35926
1691cc
STD (3.875”)
35927
1695cc
.005 (3.880”)
35928
1700cc
.010 (3.885”)
35929
Stroke
4.375”
Wiseco TC 88 BB Piston Kit to 95” 10.5:1
1999-06
.062 Top and second ring, .098 oil ring, 4” stroke. Screaming Eagle ignition module recommended, 95 cu in. cylinders
required, for carb models only.
Cometic gasket included with these kits.
This kit requires cylinder boring and recalibration.
35880 STD (VT2709)
35881.005
35882.010
35883.020
35884.030
35929 Cometic gasket kit (W5786)
Cometic gasket kit (W5786)
Valve pocket dimensions are measured from deck height:
Intake/Exhaust Pocket: Depth: -.205”
Diameter: 2.150”
Wiseco TC88 Flat Top BB Piston Kit 1550CC
Wiseco TC88 Standard Bore Piston Kit
Piston kit fits 1999-06 88 cubic inch models and offers 10.5:1
compression and 4.000” stroke. Top ring is 1.5mm, 2nd ring
is 1.5mm and oil ring is 3.0mm. A Screamin’ Eagle ignition
module is required to use this kit. Includes forged pistons,
rings, circlips, and chrome piston pins.
PCPBore
35990 STD 3.750” (K2726)
35992 +.010 3.760”
35993 +.020 3.770”
35994 +.030 3.780”
35995 Cometic gasket kit
Piston kit fits 1999-06 95 cubic inch models and offers 9:1
compression and 4.000” stroke. Top ring is .059”, 2nd ring
is .059” and oil ring is .098”. Recalibration is required
when these kits are used. Cylinder boring is required. Kit
includes forged pistons, rings, circlips, top end gasket kit and
chrome piston pins. Cometic gasket kit included.
PCPBore
35896 STD 3.875” (VT2719)
35897 +.005 3.880”
35898 +.010 3.885”
35899 +.020 3.895”
35929 Cometic gasket kit (W5786)
S&S Manual Compression Release Kit
S&S manual compression releases are activated by a cable
similar to a choke control. Before starting, the handle is
pulled, which opens the compression releases. When the
engine fires, the increased cylinder pressure automatically
closes the compression releases. The S&S manual compression releases can be used with any style rocker covers.
904925 Manual
904915 Electric
1-28
PRESTON CYCLE PRODUCTS INC.
Twin Cam
T/L Chrome Cylinder Base Cover
Show quality chrome diecast cover finishes the left side of a
Twin Cam engine and includes hardware for easy installation.
Fits 1999-06 Touring models, Dyna 1999-05 with forward controls and 2000-06 Softail models. Will not fit with engine/trans
top covers 66505-00, 66510-00 or 66513-00.
64277 32753-01
Chrome Lifter Block Covers TC
Features hidden mounting hardware and fits Touring 199906 and Dyna 1999-05. Does not work with oil hose cover or
engine/transmission interface top covers. Does not fit with top
covers 66513-00 or 66505-00.
64221 18248-99 (66530-03)
Chrome Lifter Block Covers TC Softail
Not for use with chrome interface cover OEM# 66510-00.
64233 18262-00
Chrome Billet Lifter Bases
59868 TC models
S&S Twin Cam Billet Tappet Covers
Fits stock and S&S Twin Cam style crankcases.
335601
TC Chrome Lifter Top Set 1999-on
Replaces 17964-99 front and 17966-99 rear.
30092
PRESTON CYCLE PRODUCTS INC.
1-29
Twin Cam
Jims Twin Cam 88 Billet Lifter Covers
High tech lifter block covers for use on all TC 88 engines
1999-on. These covers are CNC machined from billet 6061T6 aluminum and have a beautiful chrome finish. Use with
Jims #31647 hydrosolid or #31649 Powerglide tappets.
31266
T/L Chrome Billet Lifter Covers
Billet aluminum lifter covers customize 1999-on TC models.
Covers include chrome mounting hardware and gaskets.
64268 18088-02
Chrome Billet Pushrod Cover & Lifter Base Kit
30091 Fits Twin Cam models.
T/L Chrome Tappet Blocks
Fits all 1999-on Dyna and Touring models and 2000-on Softail
models.
64005 Front (17964-99)
64006 Rear (17966-99)
Andrews Twin Cam EZ-Install Pushrods
EZ-Install pushrods can be installed in an engine without
removing fuel tanks or rocker boxes. Available in anodized
aluminum and chrome moly tubing.
292188 4 Aluminum pushrods
292088 4 Chrome moly pushrods
TC-88 Quick Install Pushrods
This kit allows installation without removal of heads on TC engines 1999-on. Chrome moly construction provides superior
strength.
66016 T/L (17997-99A)
34111 Sifton
1-30
PRESTON CYCLE PRODUCTS INC.
Twin Cam
S&S Pushrod Cover Kits
Includes top and bottom covers, cover cap, cover spring, and
spring washer for four pushrods.
PCPApplication
934039 TC 1999-on, Evo BT 1984-99 and XL 1986-90
934038 As above, for engines 1” or more taller than stock
S&S TC Adjustable Pushrods & Cover Kit
Chrome-moly pushrods allow for easy installation that does
not require removal of the gas tank or rocker assemblies. Kit
includes pushrods, gaskets, o-rings, retainer clips, and upper
pushrod covers that have been designed to provide a more
stable and rigid cover assembly.
935095 Kit
935096 Pushrods only
Jims Pro Lite Twin Cam Pushrods
Adjustable pushrods for Twin Cam 88 are made from aerospace quality heat treated aluminum with steel ends. Does
not require dissasembly of top end or removal of the cam.
Pushrods work with stock or custom pushrod tubes. Pushrods
have 24 threads per inch with 3/8” balls on both ends.
31179 All Twin Cam 88
S&S Quickie Pushrods
Crane “Time-Saver” Adjustable Pushrod Set
7/16” Chrome moly pushrods are the strongest available.
Adjust from 8.750” to 10.750”. Can be installed with stock
pushrod tubes.
34626 Twin Cam 1999-on (4-0031)
The threaded adjuster screws into the pushrod until the
threads disengage and the adjuster simply slides into the
pushrod making installation or removal a snap. Once the
pushrod is installed and adjusted the locknut prevents the adjuster from moving. The ball ends of the pushrods are drilled
so that oil can flow through the pushrod.
PCPApplication
Displacement
935122 1999-on Twin Cam
88-124”
**Note: 1984-99 EVO style push rod covers are required for
access to the Quickie push rod adjusters in Twin Cams
PRESTON CYCLE PRODUCTS INC.
1-31
Twin Cam
Complete Pushrod Cover Kits
Visible parts are all chrome and includes upper covers, inner
cover, and lower covers.
34107 1999-on TC
Chrome Upper Pushrod Cover Kits (outer)
Each kit contains 4 chrome plated retaining clips, 4 chrome
plated cups, 4 springs, 4 cork gaskets, and 4 steel washers.
Exact duplicates.
9970 Twin Cam 88 1999-on (1-3/4” clips)
Chrome Billet Pushrod Cover Kit TC
These aluminum pushrods feature a groove design and beautiful chrome plating. Fits all 1999-on Twin Cams.
61072 18096-00A
Chrome Lower Pushrod Cover Kits
These stock pushrod covers are beautifully plated duplicates
of the Harley part. Available in sets of 4 with cork gaskets for
Twin Cam 88 1999-on.
9968
Twin Cam Chrome Billet Pushrod Cover Set
Upper, Inner Pushrod Covers
9969
1-32
Twin Cam 88 1999-on
Includes chrome pushrod covers, seals and necessary
o-rings. Fits Twin Cam and replaces 18096-00.
59260
PRESTON CYCLE PRODUCTS INC.
Twin Cam
AV&V Stainless Steel Valves
These valves are heat treated and nitride processed for excellent wear resistance. These valves feature a 45 degree angle,
cut below the lock groove to reduce stress in this area, as well
as making valve seal installation easier.
Twin Cam Valves 1999-04
PCP
Valve
31660 Exhaust
31661 Intake
Head Diam.
1.570”
1.845”
Evolution BT Valves 1984-on
PCP
Valve
31662 Exhaust
31661 Intake
Head Diam.
1.615”
1.845”
AV&V Replacement Valve Guides for Evo and
Twin Cam Models to 2004
These manganese bronze guides are stock length for direct
stock replacement. Use with .530” valve seals. Same guide
will fit intake or exhaust.
PCP OversizeO.D.
I.D.
31801 STD
.5625”
.308”
31802 .001”
.5635”
.308”
31803 .002”
.5645”
.308”
31804 .003”
.5655”
.308”
31805 .004”
.5665”
.308”
31806 .025”
.5875”
.308”
AV&V High Performance Valve Guides for Evo
and Twin Cam Models to 2004
These manganese bronze guides have a shortened seal area
and are tapered for use on high lift and high flow applications.
Use with .530” valve seals.
IntakeExhaustOversize O.D.
I.D.
3175631768 STD
.5625”
.308”
3175731769 .001”
.5635”
.308”
3175831770 .002”
.5645”
.308”
3175931771 .003”
.5655”
.308”
3176031772 .004”
.5665”
.308”
3176131773 .005”
.5675”
.308”
3176231774 .006”
.5685”
.308”
3176331775 .008”
.5705”
.308”
3176431776 .010”
.5725”
.308”
3176531777 .012”
.5745”
.308”
3176631778 .015”
.5775”
.308”
3176731779 .025”
.5875”
.308”
AV&V Valve Seats
These valve seals are made from heat and wear resistant
high quality alloy steel, and are manufactured with clear
identification markings and radius edges for easy installation.
These seats will resist intense valve pounding and effectively
dissipate heat for consistant valve sealing. These valve seats
will increase in hardness during engine break-in period.
Exhaust and intake valves are made from the same material,
choose size as needed. Machining may be required.
PCP O.D.I.D. Thickness
31787 1.630” 1.180”
.385”
31789 1.757” 1.371”
.315”
31780 1.757” 1.410”
.430”
31788 1.880” 1.439”
.410”
31784 1.944” 1.570”
.400”
31781 2.008” 1.610”
.440”
31782 2.040” 1.590”
.420”
31790 2.068” 1.750”
.315”
31783 2.070” 1.610”
.460”
31785 2.135” 1.750”
.400”
31786 2.163” 1.750”
.455”
PRESTON CYCLE PRODUCTS INC.
1-33
Twin Cam
Jims Compression Release Valves
Rowe 7mm TC Valves and Guides 2005-on
Valves
PCPType Size
32221 IntakeStd.
32222 Intake
+1/16” OS
32223 Intake
.100” OS
32224 ExhaustStd.
These release valves make starting your engine effortless by
venting cylinder compresion with just the push of a button.
These are indispensable when used with stroker kits, high
compression engines and large displacement engines. Simply
drill and tap each cylinder head and thread in the self-sealing
release valves.
31283 Fits all BT and XL (10mm)
GuidesSize
17700 Std.
17701 .001
17702 .002
17703 .004
17704 .006
Fluoro-Viton Valve Seals (5 packs)
Seals are made from a fluoro-viton polymer with teflon added
to prevent valve to seal friction. A metal spring keeps constant
seal to valve tension to prevent oil consumption. These seals
are then bonded to a steel jacket that provides a secure fit to
the guide. The internal ribs are designed to allow for installation without any tools, but hold secure after installation.
PCP StemGuide
32276
6mm .347 (hat style)
32275
7mm
.562 (hat style)
32274
5/16”
.420
32270
5/16”
.531
32269
3/8”
.531
32273
3/8”
.562
32272
3/8”
.625
32271
11/32” .531
S&S Replacement Valves Evo and TC
Use 2.000” intake valve and 1.605” exhaust valve for all S&S
89cc TC cylinder heads and all S&S evolution cylinder heads.
PCPDescription
902000 2.000” Intake valve
902001 1.605” Exhaust valve
902029 Intake valve +.005” stem diameter for rebuilds
902030 Exhaust valve +.005” stem diameter for rebuilds
For A Greater Selection of Valves, Springs
and Guides-See EVO Pages 1-92 to 1-99
Many Evo and TC models use the same parts and a greater
selection of these pieces can be found with the Evo parts.
Valve Stem Keepers
Replaces 18260-02 for BT 2005-on and XL 2004-on.
30019
(4 pair)
1-34
PRESTON CYCLE PRODUCTS INC.
Twin Cam
S&S Standard Forged and Roller Rocker Arms
Forged steel for maximum strength. Roller tip reduces side
thrusting on valve stem in high lift applications and .750”
bushings provide 50% more load bearing area than stock.
Recommended for cams of .585” lift or less. Fits evolution BT,
XL and all TC engines. Set includes two each front and rear
rocker arms.
904065 Roller arm set
904119 Standard forged arm set
Sifton Roller Rocker Arm Set
Features drop forged construction with hardened steel roller.
Fitted with bushings at shaft area. 4 Piece rocker set. Fits Evo
and Twin Cam 88. Order shafts separately.
PCPApplication
32338
Arm Set
30300
Rocker shaft (17611-83) (each)
Jims Roller Rocker Arms
Precision, American made rocker roller arms are investment
cast from purified, aircraft quality, 4340 chrome moly steel.
Both stock and aftermarket rocker arms were analysed to determine a baseline for the design: 660 bronze bushings were
retained and a bearing grade steel roller tip was integrated
into the design. Rocker arms feature a segmented parabolic
pushrod cup that reduces friction, wear, and improves roller
tip oiling. Stock ratio of 1.625 will easily accomodate a .700”
lift cam (at the valves). Replaces 17360-83 and 17375-83.
Set of 4.
31251 BT 1984-on, XL 1986-99
Crane Bushing Tip Roller Rocker Arm
Roller tip rocker arms have a bushing fulcrum for long term
performance and reliability.These arms use the original equipment rocker arm shafts. Made from 4140 alloy steel and precision forged for greater strength, truer rocker arm ratio, and
improved rocker geometry. Features oil metering system that
fully lubricates the fulcrum and roller tip for cooler, smoother
operation. Installs easily with no machining on your original
rocker shafts. Set of4.
34564 Twin Cam 88 1999-on with stock ratio
PRESTON CYCLE PRODUCTS INC.
1-35
Twin Cam
Forged Rocker Supports for TC-88
29470 17675-01B Twin Cam Chrome Headbolt Cover
Valve Cover Screw Cover Set TC88 1999-on
Screw covers are sold in packs of 4 and are grooved to match
head bolt covers. Fits TC88 1999-on.
44045 43868-99
This attractive chrome cover hides the headbolts and sparkplugs on 1999-on Twin Cam models (except those with fairing
lowers). Cover features a bar and shield emblem and is easy
to install using included hardware.
64267 43858-00
72024
Headbolt Covers for TC and Evo
Chrome Oil Line Fitting Set
Will screw into TC-88 engine case to allow use of 3/8” braided
steel lines or 1/8” NPT thread for oil tanks and elbows. Built-in
compression fitting so no need for clamps. Reusable 3 piece
set.
PCPApplication
59055 3/4” NPT TC-88
73591 1/8” NPT
73592 1/4” NPT TC-88
1-36
Chrome plated headbolt covers to hide dull 12 point headbolts on all late 1985-on FL, FX, XL. Simple installation with
set screw. Set of 4.
72024 Custom hex dome style
72232 Smooth style
72262 Pike style
PRESTON CYCLE PRODUCTS INC.
Twin Cam
Twin Cam 88 Chrome Engine Parts
Fits Dyna, FLT 1999-on and Softail 2000-on.
PCPDescription
64806 T/L Chrome upper rocker cover (17572-99)
45916 As above (pair)
64807 T/L Lower rocker housing (17573-99)
64005 Front tappet cover (17964-99)
64006 Rear tappet cover (17966-99)
Twin Cam Stock Style Heads
For BT 1999-04 in silver or black finish.
PCP OEM
DescriptionFinish
65215 16716-99 Front head Silver
65216 16717-99 Rear head Silver
65217 16722-99 Front head Black
65218 16724-99 Rear head Black
Scorpion Head Bolt Covers for TC-88
Classy chrome covers are easy to install and are held in place
with set screws. For added convenience spark plugs can be
removed without removing covers.
PCPApplication
45264
TC-88 1999-2007
Headbolt Kits For Twin Cam- 8 Pack
Polished and chrome plated 12 point dome top headbolts.
72012 BT 1992-on, XL 1993-on (16480-92, 16478-85A)
PRESTON CYCLE PRODUCTS INC.
1-37
Twin Cam
S&S Style Chrome Rocker Box Set TC
Fits TC-88 models for 2 heads.
59556 Rocker box set
25405 Gasket set
Headbolt Covers for Evo and Twin Cam
Chrome hex dome headbolt covers hide 12 point headbolts
on all late 1985-on FL, FX, XL. Installs with set screw.
72024
TC Chrome Screw Set
Includes o-ring seals to mount upper rocker box cover on twin
cam models.
24087
Chrome Billet TC-88 Rocker Box Kit
Fits 1999-on TC-88 models and will accept high lift cams.
45918 2 Pc Kit for 1 head
S&S Chrome Diecast Aluminum Cover Kits
These covers fit all Twin Cam and include bases and covers
for both cylinders, one-piece rocker shaft support units, Viton
o-rings and all hardware and gaskets required for installation.
Exterior hardware is chrome plated.
904110 Twin Cam 88/95
James Twin Cam Top End Gasket Kits
PCP
79986
79993
79994
79995
Year
1999-04
1999-04
1999-04
1999-04
EngineDescription
1450cc Top end w/.045” head gaskets
1550cc Top end w/.046” head gaskets
1450cc Top end w/.036” head gaskets
1550cc Top end w/.036” head gaskets
Radii Twin Cam Top Rocker Box Set
Fits 1999-on TC-88 models.
21792
1-38
PRESTON CYCLE PRODUCTS INC.
Twin Cam
James Twin Cam Engine Gasket Kits
PCP
79987
79925
79926
79927
Year
1999-04
1999-04
1999-04
1999-04
EngineDescription
1450cc Engine kit w/.046” head gaskets
1450cc Engine kit w/.036” head gaskets
1550cc Engine kit w/.046” head gaskets
1550cc Engine kit w/.036” head gaskets
Chrome Snap Caps Bolt Cap Cover Kits
These bolt cover kits make any bike look great and are also
great for custom builders. Beatifully designed and chromed,
these caps easily install over the raw OE bolt heads on
engine, transmission, primary and more. Each kit includes
individually marked pieces that make identification and installation a breeze.
Model
Year
2009-on
PCP
Kit Qty.
21900
111
2007-08
21901
75
2009-on
21902
126
FL
1999-06
21904
83
2006-on
21905
76
Dyna
1999-05
21906
86
Twin Cam
21907
156
2007-on
21908
81
Touring
2000-06
21909
87
2009-on
21910
125
FLSTSB
2009-on
21912
175
TC-88
Engine
21913
79
2004-on
21914
77
XL
1984-03
21915
74
2004-on Engine
21916
63
Softail
James Twin Cam Gaskets and Seals 1450cc
PCPDescription
14505* O-ring, drain plug (11105) (10 pk)
14510* O-ring, starter housing (11116) (10 pk)
79023 O-ring, filler plug (11132) (25 pk)
14520* O-ring, speed sensor/piston cooling jets (11140) (10 pk)
79031 O-ring, lower pushrod cover (11145) (25 pk)
79033 O-ring, alternator (11147) (10 pk)
79039 Quad seal, left side spacer (11165) (10 pk)
79070 Oil seal, 5th gear m/shaft (blue) (12035-B) (5 pk)
79077 Oil seal, 5 spd shifter shaft (12045-DL) (5 pk)
79082 Oil seal, inner primary m/shaft (12052) (5pk)
79507 Oil seal, jackshaft (12066) (5 pk)
79508 Oil seal, transmission pulley (12067-A) (each)
79512 Oil seal, sprocket shaft (12068) (5 pk)
79526 Gasket, rocker housing to head (16719-99) (pair)
79527 Gasket, cyl/head stock bore (16775-99) (5 pk)
79528 Rocker cover gasket and seal set (17033-99)
79529 O-ring kit, induction module (17043-99)
79530 Gasket kit, head and base (17047-98)
79531 Gasket kit, exhaust (17048-98)
79986 Top end gasket set TC 88(17052-99)
79993 Top end gasket set .045 TC 95 (17052-99-X)
79987 Engine gasket set (17053-99)
79532 Gasket, top rocker cover (17386-99) (pr)
79533 Gasket, breather cover w/silicone (17591-99) (5 pk)
79535 Gasket, breather cover baffle (17592-99) (5 pk)
79537 Oil seal, valve guide kit (18001-83-B) (4 pk)
79538 Gasket, tappet cover w/silicone (18635-99) (10 pk)
79539 Gasket, cam cover w/silicone (25244-99) (5 pk)
79540 Cam gear quick change kit (25244-99-K)
79542 Seal, clutch inspection cover (25416-99) (5 pk)
79543 Gasket, trans oil cover w/silicone (26077-99) (10 pk)
79149 O-ring, case locating dowels (26432-76-A) (10 pk)
79544 Seal, umbrella valve rocker cover (26858-99) (6 pk)
79545 Seal, intake manifold (26992-99) (2 pk)
79546 Gasket, carb back plate (29062-95-B) (10 pk)
79547 Gasket, induction module to back plate (29368-99) (10 pk)
79548 Gasket, filter element EFI (29463-99) (10 pk)
79709 Transmission gasket set (33031-99)
*Not James
PRESTON CYCLE PRODUCTS INC.
1-39
Twin Cam
Accel Twin Cam Motor Gasket Kits
PCPApplication
25539 Top end 1550cc big bore gasket kit all 1999-on
S&S Twin Cam Rocker Gasket Sets
904097
904073
904111
Stock rocker covers
S&S billet style rocker covers
S&S die cast style
O-Rings Twin Cam 88 1999-on (10 pack)
14584
14585
14586
14587
14588
14589
14590
14591
14592
14593
14594
Cylinder base (11256)
Rocker arm support (11270)
Cylinder head locating dowel (11273)
Oil pump outer (11286)
Cam position sensor (11288)
Crankshaft sensor (11289)
Neutral switch (11290)
Upper pushrod cover (11293)
FLT fork air control (11297)
Cam support plate plug (11298)
Oil pump inner (11301)
Topline Twin Cam Complete Gasket Sets
Fits 1999-on FLT, 1999-on FXD, 2000-on FXST.
25940 17053-99B
1-40
Topline Twin Cam Gaskets
PCPDescription
25930 Gasket, rocker housing (16719-99) (pr)
25932 .055 Graphite 1550cc head gasket (16787-99) (pr)
25934 Rocker cover (17386-99) (pr)
25935 Breather cover (17591-99) (10 pk)
25936 Breather baffle (17592-99) (10 pk)
25937 Lifter cover (18635-99) (10 pk)
25938 Cam cover (25244-99) (5 pk)
Topline Twin Cam Top End Gasket Sets
Fits 1999-on FLT, 1999-on FXD, 2000-on FXST.
25941 17052-99B
PRESTON CYCLE PRODUCTS INC.
S&S EVO
S&S Two Piece Chrome Billet Rocker Covers
Fits 1984-on Evolution Big Twins, both vented out of crankcase or through the head types. Umbrella valves included for
use with 1993-on cylinder heads. Kit includes complete front
and rear cover assemblies, rocker shaft supports, gaskets
and mounting hardware.
904050
S&S Super Sidewinder Plus Evolution Style
Engines 124”
If you are looking for the most powerful Evolution style production engine available for the street, your search ends here.
The S&S 124”, 4-1/8” bore Super Sidewinder Plus engine is
it. This engine will fit in a stock H-D frame, but the performance is anything but stock. We recommend this engine only
for experienced riders who are seeking the ultimate in street
performance. The S&S HVHP oil pump, S&S compression
releases, piston cooling oil jets, chrome plated diecast rocker
covers, and roller rocker arms are standard equipment in
every SSW+ engine. That gives you performance, reliability
and improved engine life.
All engines are available with ignition, chrome billet tappet guides, Super G carburetor and chrome gearcover.
By Special Order Only- S&S Intelligent Spark Technology
knock sensing ignition. Engines purchased with S&S IST
ignition carry an extra year of warranty from S&S because
they are confident that this ignition will prevent damage to
the engine due to knock or detonation or over revving during the break-in period. Engines with IST feature a special
billet gear cover and are available only with billet tappet
guides. Not recommended for kick start applications.
Specifications:
Bore StrokeSize CamshaftPiston
4-1/8” 4-5/8” 124” S&S 640 S&S Forged
S&S 124” Engines with Super G Carb
AssembledFinish
319528
Natural aluminum with IST
319860
As above with Super Stock
319552
Black powdercoat with IST
319885
As above with Super Stock
C.R.
10.8:1
S&S Super Stock Ignition Systems for Evos
This unit is primarily intended for complete S&S engines
and is well suited to existing S&S engines that were not
sold with an ignition system installed, S&S Sidewinder kits
and S&S Hot Set Up kits that have the same configuration
as a complete engine. The Super Stock module fits inside
the cam cover under the ignition cover and features a preprogrammed module. Curves are preset for a specific S&S
engine and modules intended for that engine may not yield
optimum results when used on another configuration. Like the
S&S IST Ignition, the Super Stock features a break-in rev limit
function with a very low initial rev limit.
The Super Stock Ignition features single fire operation, 6300
rpm rev limiter, overload and short circuit protection and a
minimum 3.0 primary resistance. Dual plugged applications
require a pair of two tower coils or a single four tower coil.
VOES retards timing under load or hard acceleration while 24
hr break in rev limiter prevents damage during break-in.
S&S Super Stock Ignition Kits and Replacement Modules
Kits include module with hardware, pick-up cup and mounting
screw, VOES switch with hardware, and connectors.
IgnitionModule
Kit OnlyApplication
551254551244 S&S 96” Evolution
551255551245 S&S 113” Evolution
551256551246 S&S 124”
PRESTON CYCLE PRODUCTS INC.
1-41
S&S EVO
S&S 113” 4” Bore Super Sidewinder Motor
S&S 96” Super Stock EVO Long Block
Assembled Only with Billet Tappet Guides and
Gear cover
The old timers at S&S remember when they started producing engine packages. Back then, the 96” 3 5/8” bore Evolution
style engine was the “King”. Everyone loved the 96” because
it made great power, it was reliable, engine life was exceptional, and being essentially stock height, it fit well in a stock
frame. If you are looking to replace a worn out stock EVO
engine with something a bit more potent, you still can’t beat a
96”.
To make the 96 an even better value S&S has updated it with
a 585 camshaft for even better performance and reliabilty.
The 96” comes with chrome plated rocker covers, roller rocker
arms, Super E carb and forged pistons for 10:1 compression.
319752 Aluminum finish with IST
319857 Aluminum finish with Super Stock
319753 Black finish with IST
319858 Black finish with Super Stock
319759 Polished finish with IST
319859 Polished finish with Super Stock
NOTE** Motors listed here are a service
offering, we do not have them in stock but
delivery can usually be arranged in 2-3
weeks
Clear Timing Plugs
Available in standard or long version.
Sold each
PCPType
626
Standard (96295-65TA)
73653 Long
73654 Hex
1-42
The 113”, 4” bore motor is not the biggest production engine
that S&S offers but are still very popular because they have
many features that riders and builders really like. The 113” is
about .050” shorter than a stock Evo, which makes it easy to
fit into any stock 1984-99 frame, and engine life and dependability are better than you might expect from an engine this
large. Some standard features of the 113” that make it a good
choice are: a 600 cam, forged pistons with 10:1 compression, chrome plated diecast rocker covers, roller rocker arms,
electric compression releases, high volume/high pressure oil
pump, a Super G carb, billet timing cover & billet gear cover.
319488 Aluminum finish with IST
319491 Aluminum finish with Super Stock
319489 Black finish with IST
319492 Black finish with Super Stock
319490 Polished finish with IST
319493 Polished finish with Super Stock
New S&S Complete Engine Warranty
Complete engines equipped with S&S Super
Stock ignition system or Magneti Marelli style S&S
variable fuel injection module:
2 Years on engines under 120”
1 Year on engines over 120”
Complete engines equipped with S&S IST ignition
system or the Delphi style S&S variable fuel injection module:
3 Years on engines under 120”
2 Year on engines over 120”
Any warranty is Factory Direct Only
PRESTON CYCLE PRODUCTS INC.
EVO
All cases warranted direct by manufacturer only
Timing Plugs
Acorn style plug fits all Harley Big Twin and Sportster timing
plug holes and oil tanks with 5/18-18 drain holes.
1690
Acorn style plug with an oversize thread and one tap for rethreading the stripped out timing hole.
1758 Plug and tap
1759 Plug ONLY
Cap style plug fits all models for Harley Big Twin and Sportster timing plug holes and oil tanks with 5/18-18 drain holes.
2896 With 5/8 - 18” drain hole
5258 BT 1981-on 1/2-20 thread
New functional and custom design plug fits all models Harley
Big Twin and Sportster timing plug holes and oil tanks with
5/18-18 drain hole.
3591 Chrome
5282 Cad
5283 Black oxide
Big Twin Case Chrome Trim
This trim fits between the cylinders on 1985-99 EVO by
mounting to center case stud with the acorn nut included.
45066
Colony Allen Timing Plug all
HD 1970-on
5/8-18 Thread. Sold each and replaces
720.
9402 Chrome
9403 Cad
S&S Engine Cases (For 8 1/2 Flywheels only)
1984-1991 Evo type for 1984-99 chassis with cast aluminum primary chain cover (requires aluminum oil pump
OEM#26193-73 or S&S oil pump PC #316260)
NaturalBlack Description
310000310052Standard Bore
310001310053Big Bore 3-5/8”
310024
-
Big Bore 4”
1992-99 Evo type for 1984-99 chassis with cast aluminum
primary chain cover (requires OEM#26050-92 oil pump or
Revolution pump PC #29802)
NaturalBlack Description
310005310055Standard Bore
310077
310078
Big Bore 3-5/8”
310047
-
Big Bore 4”
-
310075
Big Bore 3-5/8” w/o sensor (for small diam. wheels)
All S&S Evo style alternator style crankcases for stock
diameter flywheels manufactured after Oct 1, 2004 are
machined for a crank position sensor. This allows the
use of a stock EFI crank position sensor or an S&S crank
position sensor for S&S Variable Fuel Injection (VFI) systems, or S&S Intelligent Spark Technology (IST) ignition
systems. If no position sensor is used, the hole is covered
with a small plate supplied with each set of cases. Crank
position sensors must be used with flywheels with timing
notches machined into the rim of the drive side flywheel
Big Twin Motor
Mount Shims
Fit on front and rear
1936-99.
PCPThickness
13512 .015 (10 pack)
13514 .036 (5 pack)
13515 .048 (5 pack)
PRESTON CYCLE PRODUCTS INC.
1-43
Big Twin EVO
All cases warranted direct by manufacturer only
Delkron Crankcases and Accessories
34981 EV-2 BBCase only.3 5/8” big bore spigot hole 1992-99 Evo, requires 1992-on oil pump and front mounted oil filter
STD Alternator Engine
These cases are made from “356-T6” aluminum alloy designed to handle flex-stress up to 38,000 PSI. They’re
machined on computer controlled equipment to hold the
tight tolerances required. All cases are machined to accept
cylinders and are notched for stroker flywheels. Comes with a
manufacturer’s statement of origin. STD sweats their inserts
in with approximately .006” of press.
34918* 1992-99 Evolution case Big Bore
* must use 1992-99 HD pump or Preston #29802
Velva-Ride Engine Stabilizer BT 1980-on
Features a stainless steel body, polished finish rod ends and
a plunger with a urethane dampening which combine to act
as a mini-shock absorber. Sold Each.
30055 Body polished with standard finish ends
40026 Body and ends (polished)
FLT-FXR Motor Mount Components
PCPDescription
29011 T/L Front mount, black (16207-79C)
40021 Front mount, black (16207-79B)
40022 As above chromed (16207-79B)
29010 Stabilizer link, zinc upper or lower FLT, FXR 80-on; upper on Dyna 91-94 (16219-79C)
40019 As above, chrome (16219-79B)
40020 Chrome upper stabilizer Dyna 1995-on (16258-95B)
21000 Front bracket 1980-06 BT Touring (4715979A)
Motor Sprocket Nuts
PCP
12568
12611
12569
12612
1-44
Application (each)
XL 1970-88 (40387-70)
XL 1989-92 (7652)
BT 1970-90 (40392-70)
BT 1991-06 (40392-91)
Chrome Front Motor Mount Assembly
Fits 1980-99 FXR-FLT models and includes bracket, link iso
mount and hardware.
59207
Chrome Front Motor Mount Cover
Cover your front case with this attractive, chrome accessory
that hides any casting imperfections.
45145 FXST 1984-on
45146 FXR 1984-94
PRESTON CYCLE PRODUCTS INC.
Motor Case Hardware
Chrome Upper and Lower Motor Mount Kit
Complete stock motor mount kit features heat treated, plated
bolts, locknuts and heavy duty washers.
9854 Softail 1984-99
Complete Colony Motor Case Kits
Kits contain all the necessary hardware to bolt together the
Harley motor cases. Each kit is packaged for the specific application.
Big Twin 1979-95
PCP
Style
5188 Acorn chrome
1804 Stock chrome
5189 Stock cad
Evo Big Twin 1996-99
9882 Acorn chrome
9883 Flanged nut style chrome
9884 Flanged nut style zinc
Twin Cam Big Twin 1999-on
9956 Polished allen
9955 Polished acorn
Big Twin Engine Stand
Lower Motor Mount
Lower motor mount features heat treated, plated bolts, locknuts and heavy duty washers. Fits 1988-06 FLT, FLHT, FXR,
FXRS with rubber mounted motors.
9859 Chrome
9860 Zinc
Perfect for Harley Engine
repair. This bench stand works
on all Big Twin engine cases
1936-99.
283196815-46
Chrome Colony Kits
Dash mounting kit 1986-94 FXR (except 88-on FXRS)
Head bolt covers (4 pieces)
Primary cover 1985-99 5 Speed (except 1989-on FXST)
Primary cover 1989-06 FXST
Rocker cover BT 1985-on, XL 1986-on (8 Screws, 3 washers)
Transmission shifter cover 1988-97 FX FL Evo
Transmission shifter cover 1980-86 BT 4 speed
Transmission shifter cover 1980-87 BT 5 speed FXST
Transmission side cover 1980-86 BT 5 speed FXST
Transmission side cover 1987-06 FX, FL, FXST
Gold
Acorn Acorn
Allen (Knurled) Caps
90149016 (Button)9015
90019000
9002
89148916
8915
89178919
8918
89318933
89218907
8922
8905
89108906
8911
8908
89128909
8913
PRESTON CYCLE PRODUCTS INC.
1-45
Crankcase BT Evo
PCP
1 10112
2 10612
4 15500
5 13540
6 15050
15051
15052
15053
15054
15055
15056
7 16228
8 11007
9 11039
10 11043
11 14016
79067
12 40021
13 29010
14 10509
10510
15 10816
10821
16 11800
17 11810
OEM Description
Year
358
Dowel pin (2)
85-*
720
Timing hole plug
84-*
9028
Bearing assembly
70-02
9120 to
Shim assortment
70-*
9134
16 sizes .0895-.1205 70-*
9220A
R/S Rollers STD (28) 58-86
9221A “ “ .0002
58-86
9222A “ “ .0004
58-86
9223A “ “ .0006
58-86
9224A “ “ .0008
58-86
9225A “ “ .001
58-86
9225A+2 “ “ .002
58-86
10080
Clamp oil line
84-86
11007
R/S Retaining ring
58-86
11160
L/S Retaining ring
L83-*
11177A
R/S Retaining ring
87-*
12026B
Oil seal
70-98
12026B
James oil seal
70-98
16207-79B Engine mount, front 80-*
16219-79A Stabalizer link/lwr
80-*
16302-81 Fitting, crankcase
81-*
16304-87 Fitting, crankcase
87-*
16837-85A Stud, cylinder
L85-99
As above
24002-70Spacer
70-*
24032-70 “ .060
70-*
U/M
10 Pk
Each
Each
Set
Set
Set
Set
Set
Set
Set
Set
10 Pk
10 Pk
5 Pk
10 Pk
5 Pk
5 Pk
Each
Each
Each
Each
Each
4 Pk
Each
Each
PCP OEM Description
Year
11811 24033-70 “ .090
70-*
11812 24034-70 “ .120
70-*
11813
24035-70 “ .150
70-*
11814 24036-70 “ .180
70-*
11815 24037-70 “ .210
70-*
181009 24599-58A R/S Bushing STD
58-*
31070
“
Jims bushing STD
58-*
1171 24600-58A R/S Bushing .002
58-*
1010 24601-58A R/S Bushing .005
58-*
31071
“
Jims +.010 bush
58-*
1011 24601-58A R/S Bushing .010
58-*
20 15920 24650-58 R/S bearing STD
58-86
15860 24626-87 “
“ white/grey 87-*
15861 24628-87 “ “ green 87-*
15862 24641-87 “ “ red
87-*
15863 24643-87 “ “ blue
87-*
21 11816 24692-58 R/S Washer .070 (2) 58-86
317003
S&S as above
317004
As above .050
22 11850 35850-84 L/S Spacer .010
70-*
11851 35851-84 “ “ .020
70-*
11852 35852-84 “ “ .032
70-*
11853 --
L/S “ Assortment
70-*
(.060 to .210)
23 10732 43578-35 R/S Bearing cage (2) 58-86
24 30050 45095-85 Retainer connector
85-*
25 10545 45830-48 Plug case oil line
L84-*
26 21000 47159-79A Engine mount chr.
80-06
27 10575 63533-41 Fitting oil hose
L84-*
BT Pinion Gear Set Side Bearing Set 1987-99
Includes cages. Available in a 1 piece or 2 piece style.
1Piece 2 Piece OEM
Colour
1587115861 24628-87A Green STD
1587215860 24626-87A White/Grey +.0001
1587315863 24643-87A Blue +.0002
1587415862 24641-87A Red +.0003
15864
24642-87A Black +.0005
15865
24644-87A Yellow +.0010
15866
24645-87A Brown +.0015
15867
24646-87A Silver +.0020
18007
-
23928-87
Pinion shaft race, 87-on
1-46
Pinion Bearing Sets
Bearing set for right side that includes rollers and cages.
15411 BT 74” & 80” 1958-86
PRESTON CYCLE PRODUCTS INC.
U/M
Each
Each
Each
Each
Each
Each
Each
Each
Each
Each
Each
Kit
Each
Each
Each
Each
Pair
5 Pk
5 Pk
5 Pk
5 Pk
5 Pk
6 Pk
Each
5 Pk
5 Pk
Each
5 Pk
Flywheels BT Evo
PCPOEM
Description
Year U/M
1 11520 6506
Bronze washer (2)
70-99 Pair
29027
T/L as above
Each
2 10301 11218
Key c/pin & pinion
L81-99 10
3 10302 11219
T-Key, pinion
88-99 10
4 11051 22589-83 Lock ring (4)
84-99 10
5 32352 22719-85 Piston pin (2)
86-99 Each
6 3386 23909-80 Sprocket shaft
L81-E85 Each
31200
Jims as above
7 31140 23961-80A Crank pin Jims 3 hole L81-99 Each
32549
Eastern, as above
L81-99 Each
31156
Jims as above 3 hole L81-99 Each
32548 23975-87 USA crank pin .002 L83-99 Each
8 12536 23969-83 Nut, crank pin (2)
L83-99 Pair
9 10306 23985-54 Key, pinion (2-’89)
54-99 10
10 1889 24006-83 Pinion shaft
L83-86 Each
31247
Jims as above
L81-86 Each
32502 24006-87 “ “ STD
87-88 Each
31248
Jims as above
87-88 Each
32503 24020-87 “ “ .001
87-88 Each
32504 24021-87 “ “ .002
87-88 Each
PCP OEM Description
11 12539 24016-80 Nut, gear shaft
12 12541 24017-80 Nut/sprocket shaft
13 34004 24281-83 Rod assembly
14 18597 24334-36 Bush. piston .002
18509 24335-36 “ “ .010
18637 24316-99 Pin bushing
15 977 24345-36 Rod race, narrow (2)
24356-36 “ “ wide (1)
31049
Jims as above
17 10723 24366-71 Cages, narrow (2)
24367-71 “ wide (1)
18 15850 24385-40B Rollers/cages STD
15800 24346-87A Bearings and cages
19 10310 26348-15 Key, pinion
20 12569 40392-70 Nut, sprocket
12612 40392-91 As above, thru-hole
21 58010 23906-78GFlywheel assembly
58011 23906-87A As above 58012 23906-90A As above 58013 23906-93B As above Year
U/M
L81-89 Each
L81-E85 Each
L83-99 Each
36-98 Pair
36-98 Pair
99-on Pair
36-99 Set
73-86
Set
41-86
87-99
36-99
70-90
91-06
78-86
87-89
90-92
93-99
Set
Set
10 Pk
Each
Each
Each
Each
Each
Each
Complete 80” Flywheel Assembly-(USA Made)
4 1/4” stroke flywheel assembly for stock Big Twins 1978-on.
Shipped complete and assembled as pictured but trueness
must be checked before assembly of motor.
58010 1978-86 (23906-78G)
58011 1987-89 (23906-87A)
58012 1990-92 (23906-90A)
58013 1993-99 Evo (23906-93B)
PRESTON CYCLE PRODUCTS INC.
1-47
BT Evo Cam Case
Big Twin Gear Case 1984-99
PCP OEM Description
1 10155 275
Dowel pin (2)
2 10112 358
Dowel pin (2)
3 15607 9058
Cam bearing
5 10306 23985-54 Key, pinion
10302 11219
T-Key, pinion
6 31309 24240-78 Pinion gear, orange
31310 24041-78 Pinion gear, white
31311
24042-78 Pinion gear, yellow
31312
24043-78 Pinion gear, red
31313
24044-78 Pinion gear, blue
31314
24045-78 Pinion gear, green
31315
24046-78 Pinion gear, black
29016 24040-90 Pinion gear, orange
29044 24042-90 Pinion gear, yellow
29045 24043-90 Pinion gear, red
29046 24044-90 Pinion gear, blue
29047 24045-90 Pinion gear, green
29048 24046-90 Pinion gear, black
29086 24040-93 Pinion gear, orange
29087 24041-93 Pinion gear, white 29088 24042-93 Pinion gear, yellow
29089 24043-93 Pinion gear, red
29090 24044-93 Pinion gear, blue
29091 24045-93 Pinion gear, green
29092 24046-93 Pinion gear, black
7 12544 24023-54 Nut, pinion
12542 24022-90 As above
31015
Jims, as above
12613 7916A
As above
8 1193 24703-54 Spacer, pinion
11534 24704-90 As above
93011925310-82A Breath valve, plastic
10 11560 25320-82 Plastic washer .130
11561 25321-82 “ “ .135
11562 25322-82 “ “ .140
11563 25323-82 “ “ .145
11564 25325-82 “ “ .150
Year
57-on
41-on
58-99
54-89
90-99
77-89
77-89
77-89
77-89
77-89
77-89
77-89
90-92
90-92
90-92
90-92
90-92
90-92
93-99
93-99
93-99
93-99
93-99
93-99
93-99
54-89
90-92
U/M
10 Pk
10 Pk
Each
10 Pk
10Pk
Each
Each
Each
Each
Each
Each
Each
Each
Each
Each
Each
Each
Each
Each
Each
Each
Each
Each
Each
Each
Each
Each
93-99
54-89
90-92
L77-99
L82-*
L82-*
L82-*
L82-*
L82-*
Each
Each
Each
Each
5 Pk
5 Pk
5 Pk
5 Pk
5 Pk
PCP OEM Description
Year
U/M
11565
25326-82 “ “ .155 L82-* 5 Pk
11566 25327-82 “ “ .160 L82-* 5 Pk
11567 25328-82 “ “ .165 L82-* 5 Pk
11568 --
Ass’t of various sizes L82-* 8 Pk
11 11529 25550-57 Lock washer, cam
58-*
5 Pk
12 13522 25550-36 Cam washer .050
36-*
5 Pk
13523 25551-36 “ “ .055 36-* 5 Pk
13524
25552-36 “ “ .060 36-* 5 Pk
13525 25553-36 “ “ .065 36-* 5 Pk
13526 25554-36 “ “ .070 36-* 5 Pk
13521 25555-84 “ “ .045 36-* 5 Pk
13528 25556-79 “ “ .080 36-* 5 Pk
13529 25557-79 “ “ .085 36-* 5 Pk
13530 25558-79 “ “ .090 36-* 5 Pk
13531 25559-79 “ “ .095 36-* 5 Pk
13532 -- “ “ .100 36-* 5 Pk
13520 --
Ass’t (.050-.095)
10Pk
13 18513 25581-70 Cam bush cover STD 70-*
Each
18514 -- “ “ “ .005 70-* Each
18629
“
“
“ .010 70-*Each
14 18518 25582-73 Pinion bush cover
L73-92 Each
18639
As above +.005
Each
18601
25582-93 Pinion bushing STD 93-99 Each
18602 As above +.005
Each
15 2268 26345-73 Pump drive gear 24T 73-99 Each
16 31351 26349-84 Pinion pump gear
L85-89 Each
30125 26354-90 As above
90-92 Each
30133 26354-93 As above
93-99 Each
Jims Pinion Bushing
PCPApplication
31366 O/S BT 1973-92 (25582-80AB)
31367 BT 1993-99 (25582-93)
31368 BT 1993-99 .005
1-48
PRESTON CYCLE PRODUCTS INC.
BT Nose Cone 1970-99
Cam Bushing Kit
BT kits include cam and gear shaft bushings/bearings with
lock pins and thrust plate. XL kits include all cam and gear
bushings/bearings, lock pins and shims. USA made.
BT Kits XL Kits
15400 1993-99
15406
1991-96
15401 1973-92
15407
1986-90
Big Twin Cam Cover (Points Ignition) 1970-78
PCP OEM Description
Year
U/M
1 10127 615
Pin breaker plate
70-78 10 Pk
2 10183 620
Pin breaker weight 70-78 10 Pk
3 10115 623
Pin
70-7810 Pk
4 2556 3570
Timer bolt
70-99 Each
5 45469 25268-84A Chrome gear cover 73-92 Each
45471 25256-93A Chrome as above 93-99 Each
67928025225-70B Gasket, James .031 70-92 10 Pk
79282 25225-70-X Gasket, black 70-92 5 Pk
w/silicone
29100
Ignition rotor cup, gold 1983-99 (32402-83)
79283 25225-93 Gasket, paper, cam 93-99 10Pk
(requires OEM bolt #26113, not included)
93-99 5 Pk
29139
Ignition rotor cup Evo fuel injected models 1995-* 79285 25225-93-X Gasket, black w/silicone
(32456-95)
7 2555 32522-70 Advance weights
70-78 Pair
8 30052 32542-70A Cam, breaker
70-78 Each
9 25109 32591-70 Gasket 2 hole
70-79 10 Pk
25110 32591-80 Gaskets 4 hole
80-99 10 Pk
10 10844 32601-78 Stud timer cover
L72-E82 Pair
10846 32606-82 “ “ “
L82-99 Pair
10896 As above
Oversize 12/24 threads
Pair
11 12165 32605-70 Advance springs
70-78 10 Pk
12 3333 32618-70 Points plate, bare
70-78 Each
13 N/A 32629-70 Shaft & plate
70-E78 Each
14 724 32661-70Points
70-7810 Pk
16 727 32726-30ACondensers
48-78 10 Pk
18 14074 83162-51 Oil seal cover
70-99 5 Pk
Ignition Wire Clamp BT 1987-92
16263 38713-87A (each)
Jims BT Cam Cover Bushings
PCP
31359
31360
31361
Description (Each)
BT 1970-99 STD
BT 1970-99 .005 (25581-70)
BT 1970-99 .9875 (25581-80AB)
Ignition Wire Hold-Downs
Crankcase Oil Screen
16270 24983-00 (each)
Die-cast aluminum, chrome-plated ignition wire hold-downs
neatly secure the ignition wire to the cam cover. They accept
a socket head screw (not included). Sold each.
27530 Small wire hold-down for point-type ignitions
27531 Large wire hold-down for electronic-type ignitions.
PRESTON CYCLE PRODUCTS INC.
1-49
BT Cam Case 1970-99
Advance Unit Assembly 1970-99
S.S. Competition Advance Mechanism-USA
Rivera Engineering’s advance unit features: shaft and plate
of stainless steel, advance weights that are heat treated and
coated with high-tech, low friction polymers; stainless steel
pins, and stainless steel washers. Replaces 32505-78A for
1970-99 mechanical advance applications.
76009 Advance unit
Replacement unit assembly for those worn out parts on the
stock 1970-E78 models as a complete kit to convert late 1978
models electronic ignitions back to point style ignitions.
681
Complete Kit
4396 Points wire only
Rotor & Weight Assembly
Replaces frozen or worn hubs &
weights on 1970-99 XL-FX-FL.
Includes shaft, weights, springs and
cam assembled.
30054 32505-78A
Tuneable Advance Unit 1970-99
Unit features a stainless base, heat treated weights, cam
bolt and colour coded springs that allows full advance at
1400, 2000, and 2600 RPM, depending on which springs are
selected. Can be used with all ignitions, points, single or dual
fire types which utilize an advance unit. Springs also available
separately.
28127 Tuneable unit
Advance Weight Spring 1970-99
PCPDescription
12165 Black, stock OEM style springs, 1400 RPM (10 pack)
13001 Heavy advance weight springs for slightly modified stock low compression or mild Stroker. Helps solve minor idle problems, 2000RPM (pair)
13002 Severe duty weight springs for high compression and heavily modified engines. Also useful for
engines experiencing pinging or erratic idling, 2600 RPM (pair)
1-50
Needle Bearing Advance Unit 1970-99
Advance unit features redesigned weights which house
full complement miniature needle bearings for perfect balance and centrifugal actuation. Unit includes base, cam,
weights with installed needle bearings; and stock springs.
Fits BT 1970-99, XL 1971-on and can be used with all ignitions, points, electronic, single, or dual types which utilize
an advance unit. Springs available separately and allow full
advance at RPMS listed.
28123 Complete unit
Timing Cover Screw
Kit All Big Twins
1970-92
1748 Acorn Style
5353 Allen Style
24038 Stainless Steel
PRESTON CYCLE PRODUCTS INC.
BT Cam Cover
Polished Billet Cam Cover, Big Twins 1993-99
Made by Jims from 7075-T651 aluminum with a tensile
strength of almost triple the stock cast unit. This cam cover is
right to the center line of the cam bushing and pinion bushing.
This is a two piece construction, inner cover houses the cam
bearing and seal. O-Rings are used with both covers to offer
superior sealing. Two mounting bolts are all that show at final
assembly.
31296 1993-99 (25254-93A)
BT Nose Cone Gear Covers
These covers fit Big Twin models 1973-on with end oiling
models. Covers come with bushings installed and either
chrome or polished finish. Includes seal.
PCPDescription
45469 1973-92 Chrome (25268-84A)
45470 1973-92 Polished
45471 1993-99 Evo Chrome
67400 1973-92 Chrome, U.S.A. (25268-84A)
67401 1973-92 Polished, U.S.A. (25258-80B)
67402 1993-99 Evo Chrome, U.S.A. (25256-93A)
67403 1993-99 Evo Polished, U.S.A.
Jims BT Chrome Cam Cover Kit
31269 BT 1993-99
Colony Cam Cover Screws
Polished Chrome Timing Cover Screw Kit
8761
FX 1970-92, EVO
Chrome Acorn Style
Chrome Allen Style
PCPApplication
5353 Shovel and Evo 1970-92
9819 BT 1993-99 (no tTC 88)
9946 TC 88, Dyna, FLT 1999-on
PCPApplication
1748 BT 1970-92
9820 BT 1993-99 (not TC 88)
9945 TC 88, Dyna, FLT 1999-on
Chrome Cap Style
PCPApplication
8466 BT 1970-92
PRESTON CYCLE PRODUCTS INC.
1-51
BT Cam Cover
S&S Polished Billet Gear Cover Kits 1973-92
The 1973-92 style polished gear covers fit stock 1973-92
engines and are now standard equipment on S&S polished
evolution style engines. The 1973-92 gear covers have the required breather passage for engines that have the crankcase
breather routed directly out of the crankcase. Chromed billet
aluminum covers fit 1993-99 and are perfect for stock engines
or any engines built with 1992-99 stock flywheel assemblies
as they are machined to accomodate the larger stock pinion
gear nut. The 1993-99 gear covers do not have the breather
passage required for “case breathing” engines and should
only be used with engines that have the crankcase breather
routed through the cylinder heads. Kits include gear cover,
ignition cover, gaskets and mounting hardware.
PCPDescription
310335 Complete kit 1973-92
310336 Complete kit 1993-99
310332 Ignition cover only
S&S Crankcase Gear Cover Kits 1973-99
Covers are machined from 356-T6 aluminum castings and
feature a distinctively different from stock appearance. Kits
include an inner gear cover and a decorative bolt-on outer
cover. Will accept either points or an electronic ignition system.
FlangeYear
310211
1973-92
310212
1993-99
FlangelessYear
310203
1973-92
310204
1993-99
S&S Billet Gear Cover for Evo Style S&S
Engines with Crank Position Sensor Ignition
Polished Billet Flame Points Cover
Radical flamed points cover features skull motiff to fit BT
1970-99.
59707
1-52
This gear cover is intended for engines that make use of a
notched flywheel and crank position sensor for ignition timing.
It is not machined to accept an ignition system. Shorter than
standard type gear covers, it is not subject to cam seal leaks,
since the cam is entirely contained within the cover. Solid one
piece polished cover is machined from billet aluminum and
features the S&S logo. Direct replacement for gear covers
supplied on S&S engines equipped with IST ignition or Variable Fuel injection.
310313
PRESTON CYCLE PRODUCTS INC.
BT Cam Cover
Chrome Cam Covers BT 70-92
Stamped steel covers completely enclose your cam and point
covers like a second skin. Each cover includes all of the necessary mounting hardware.
45048 Riveted version (rivets are non-functional)
45049 Plain version
Chrome Nose Cone Cover
This cover slips over your existing nose cone and mounts up
with the existing hardware.
45332 BT 1970-92
Chrome Nose Cone Cover BT 1993-99
This steel cover slips over your existing cam cover with hardware included.
45051
Chrome Skull Design Cover
PCP TypeApplication
45482 Points 1970-98 BT
45483 Points 1971-on XL
59171 Derby 1970-98 BT
59172 Derby 1999-09 BT
Flame Covers
Chrome Maltese Cross Covers
Chrome plated diecast designs for BT 1970-on.
PCPDescription
45165 Points cover 1970-98
45523 Points cover 1999-on
PCP
59184
59185
59186
59187
CoverType
Derby 3 Hole BT
Derby 5 Hole BT
Points 2 Hole
Points 5 Hole
PRESTON CYCLE PRODUCTS INC.
1-53
Point Covers Multi-Fit
“Dome” Point Cover
A beautiful chrome die-cast
point cover for all BT & XL
1970-99. Replaces 3258488T.
3409
Live to Ride Point Covers
For all Harleys 1970-99. These highly detailed covers feature
a three dimensional eagle emblem available in our chrome
or our gold overlay version. Fits ALL Big Twins 1970-99 with
Horizontal Holes
45112 Chrome
(Away of Life)
45212 Gold Overlay (Eagle Spirit)
Fits ALL XL’s ‘70-on w/Vertical Holes
45113 Chrome
(Eagle Spirit)
Domed Points Cover
Fits side to side and top to bottom type points covers. Chrome
plated with six non-functional
buttonhead Allen Screws for
that high-tech “racers only” look.
Complete with hardware.
5486 XL’s 1971-85, BT 1970-99 pre TC
Bird Design Point Covers
PCPApplication
44067 XL 1971-on
44068 BT to 1999
Spinner Points Cover 1970-99
Features a die-cast chrome “HOLY” cover which spins onto a
backing plate. This backing plate may be painted for a flash of
colour.
59001
3102
Chromed Ribbed XL
Ignition Cover Gasket
Point Cover Allen Screws
Fits BT & XL 1970-On
PCP Style LengthYear
2864 Acorn .400
70-99
5256 Cap .400
70-99
8492 Gold Cap
70-99
5356 B/Head.500 70-78
5357 B/Head.600 79-99
1-54
Use on all 1970-99 Twins.
Preston James Type (10 pack)
25109
2-Hole (32591-70)
2511079309 4-Hole (32591-80)
25224
-
2 Hole rubber
PRESTON CYCLE PRODUCTS INC.
S&S Oil Pump
Standard Billet Oil Pump Kits
Note that some kits include a breather gear and shim kit with
an oil pump assembly. Primary chain oiling is automatic and
precise eliminating potential damage to the primary chain or
dry clutch because of too little or too much oil.
Oil pump only kit includes supply gears, return gears, drive
shaft, drive shaft keys, drive shaft snap rings, check ball,
check ball spring, pressure valve, pressure valve spring,
cover screws with o-rings, miscellaneous hose fittings, plugs,
screws, paper gaskets, and mounting hardware with both
early style 1/4”-24 and late style 1/4”-20 mounting bolts.
Caution:
S&S BT Billet Oil Pump Gasket Kits
S&S Oil Pump Gasket Kit
316271
1936-91 with paper gaskets
316273
1992-99 with paper gaskets
Incorrect gear fit causes binding and premature wear or
damage to gears which may also result in damage to other
engine components.
Oil Pump Assembly Only
316203 1973-91 with universal cover
316206 1992-99
316205 1992-99 with universal cover
Oil Pump Assembly with Drive Gear, Breather Gear,
Shims
316295 1978-91
316296 1992-99
Oil Pump w/Custom Cover, Without Gears
316204 1973-91
316207 1992-99
Oil Pump w/Custom Cover and Gears
316240 1978-91
316247 1992-99
S&S BT Oil Pump Gasket Kit
Mylar gasket kit fits BT 1936-99.
316276 1992-99
316274 1936-91
S&S BT Oil Pump Kit Replacement Parts
Pump Body
316050
1973-91
316051
1992-99
Pump Cover 1992-99
316062
Standard
316063
Custom
S&S Oil Pump Master Rebuild
Fits all S&S pumps 1936-99
316275
Kit
PRESTON CYCLE PRODUCTS INC.
1-55
BT Oil Pump
S&S High Volume/Pressure Billet Oil Pump
This pump was designed for the sidewinder plus long blocks.
These engines feature piston cooling jets that spray oil on the
underside of the pistons.The high volume/high pressure pump
is recommended for any engine with 1992-99 style crankcases. These pumps feature a new tooth profile which provides
increased supply and return oil volume. Supply gears are 9%
wider than stock and return gears are 28% wider than stock
to help prevent oil carry over. Even with wider gears the pump
remains the same width as a stock pump. These pumps are
available with or without breather gears and with a universal or standard cover. The standard cover has the feed and
return lines in the 92-99 stock location. The universal cover
is a custom cover that provides a number of feed and return
options for the custom builder.
Oil Pump Only (no breather gears) 1992-99
316208 With universal cover
316209 With standard cover
BT Oil Pump Fitting Kit
PCPYears Type
73598 1984-91Stock
73599 1970-91Custom
Oil Pump with Breather Gears 1992-99
316302 With universal cover
316298 With standard cover
Oil Pump Only (no breather gears) 1984-91
316214 With universal cover
Oil pump Kit with Gears 1984-91
316307 With universal cover
S&S HVHP Oil Pump Rebuild Gasket Kit
High Volume High Pressure oil pump gasket kit includes key
and retaining ring.
PCPApplication
316308 1984-91 BT
316299 1992-99 BT
Sifton Oil Pump BT 1992-99
Features geo-rotor compact cad/cam design, modular billet
aluminum construction, superior scavenging, increased feed
flow rate which eliminates wet-sumping in crankcase.
21695
Oil Pump
Valve Kits
PCPApplication
16612 Relief valve/
bypass
(spring, plug, valve)
Oil Pump Top Cover
Chrome plate fits the gap between engine and transmission
on FLT, FLHT, FLHRC, FLHS, FLHR, FLTR 1993-98 models
with ribbed or classic oil pump cover. Does not fit 1999-on
Twin Cam engines. Replaces 66090-96A.
64201
1-56
16613 Check valve 1981-99
(ball, spring, cap)
PRESTON CYCLE PRODUCTS INC.
BT Oil Pump
Topline Oil Pump Assembly 1973-99
Complete late model pump includes all internal components
for Big Twins. These are a replacement for 1973-99. Can be
used on earlier models with case modification.
29800 1973-91 (26190-73)
29802 1992-99 (26053-92)
Jims Polished Billet Aluminum Oil Pump
CNC machined Flow Pro 1 pump will provide an increase
in oil return (scavenge) volume over stock pumps. Provides
increased horsepower by decreasing drag on the flywheels
and other rotating parts. Choice of end cover for custom or
stock oil line connection. Feed and return gears are matched
to each body. Available for late 1973-present Evo BT 74” to
140” motors. 1981-on bolts on with no modification. 19731980 cases will require a simple drilling for oil drain hole by
using JIMS #2286 drilling tool. No provisions for front or rear
chain oiling.
31165 BT 1973-91 w/top feed and return
31167 BT 1973-91 w/bottom feed and return
31168 BT 1992-99 w/bottom feed and return
31166 BT 1992-99 w/top feed and return
BT Oil Pump Assembly
Features improved oil pump pressure regulation that will
ensure correct oiling to all areas of BT engines 1973-on.
Kit includes all necessary fittings, snap rings, keys, gaskets
and mounting bolts. Can be used with either chain drive or
belt drive models. Note: Available with breather which also
includes drive gear gasket, breather gear and washers.
Pump Pump W/
Only BreatherYear
Finish
3006359564 1973-91Polish
3006459565 1973-91Chrome
3006559566 1992-99Polish
3006659567 1992-99Chrome
Oil Pump Rebuild Kit
Includes all gaskets, seals, clips, keys, check ball for 1981-on
FX-FL Big Twin.
Oil Pump Rebuild Kits
JamesFits
Material
79819 1981-91Paper
79818 1981-91Mylar
79820 1992-99Paper
79837 1992-99 Metal gaskets
Colony Allen Plug Set
Fits BT 1981-99 chrome plated polished allen.
72074 3 Pack
PRESTON CYCLE PRODUCTS INC.
1-57
BT Oil Pump
Delkron Oil Pump Cover
Jims Polished Billet Aluminum Oil Pump
This oil pump cover fits all Delkron oil pump bodies, and is
manufactured from the same 6061-T6 billet aluminum for
added durability. Pump cover returns the oil from the pressure relief valve to the feed side preventing overload of the
scavenger return gears.
32562 BT 1992-99
CNC machined Flow Pro 1 pump will provide an increase
in oil return (scavenge) volume over stock pumps. Provides
increased horsepower by decreasing drag on the flywheels
and other rotating parts. Feed and return gears individually
matched to each body. Available for late 1973-on BT 74” to
140” motors. 1981-on bolts on with no modifications. Note:
1973-80 cases will require a simple drilling for oil drain hole.
Use Jims #2286 drilling tool.
31159 Oil pump body BT 1973-91
31160 Oil pump body BT 1992-99
Sifton Oil Pump Pressure Relief Plunger Tool
This tool is designed to safely remove the pressure relief
plunger from oil pump without damaging the oil pump bore.
This tool can also be used in priming of the oil system before
startup. Use on all BT with aluminum type oil pump.
26152
Billet Oil Pump Cover
Polished cover features late oil pressure relief to return excess oil to feed side of pump. Use with all aluminum oil pump
bodies. No provision for front or rear chain oiling.
31161 BT 1973-91
31163 BT 1992-99
Billet Oil Pump Cover
Polished cover is designed to fit models not having the oil
tank under transmission. Features late oil pressure relief to
return excess oil to feed side of pump. Use with all aluminum
oil pump bodies. No provision for front or rear chain oiling.
31162 BT 1973-91
31164 BT 1992-99
1-58
PRESTON CYCLE PRODUCTS INC.
Oil Pump BT 1984-99
PCP
1 10102
3 15574
4 11003
5 14505
7 13132
8 30109
30112
9 14032
12 13133
14 30111
15 79141
79142
16 79143
79145
17 30100
18 30101
OEM Description
Year
239
Pin valve stop
83-99
8873
Ball chk valve 3/8”
52-on
11002
Retaining ring
68-99
11105
O-Ring chk valve (2) 79-99
26207-83 Relief valve spring
83-99
26216-84 Cover, oil pump
84-92
26270-92 Outer cover, oil pump 92-99
26227-58 Oil seal
68-99
26262-80 Check valve spring
81-99
26263-80 Plug check/relief
81-99
26273-80B Gasket body paper
L80-91
26273-92 Gasket body paper 92-99
26276-80A Gasket cover paper L80-91
26276-92 Gasket cover paper 92-99
26315-68A Drive gear
68-99
26317-68A Idler gear
68-99
U/M
10 Pk
10 Pk
10 Pk
10 Pk
10 Pk
Each
Each
5 Pk
10 Pk
Each
10 Pk
10 Pk
10 Pk
10 Pk
Each
Each
19
20
21
22
23
24
25
30
31
32
33
36
37
PCPOEM
Description
30102 26326-62A Drive idler gear
30104 26327-68 Idler gear shaft
30106 26328-74 Drive gear
10520 26338-68 Elbow fitting (2)
1408 26346-70 Drive shaft
10310 26348-15 Key, drive shaft (3)
11060 26348-36 Snap ring, shaft
30113 26400-82 Valve oil pump
5672 26561-84 Oil switch 5 speed
10545 45830-48 Oil plug (2)
10575 63533-41 Fitting oil line (2)
29800 26190-73 Oil pump assembly
29802 26053-92 Oil pump assembly
Year
L62-99
68-99
41-99
68-92
68-99
68-99
36-99
82-99
84-99
48-99
41-99
73-91
92-99
U/M
Ea
Ea
Ea
5 pk
Ea
10 pk
10 pk
Ea
Ea
5 pk
5 pk
Ea
Ea
Chrome Oil Pump Covers for Big Twins
These chrome covers were designed to bolt-on to stock
aluminum oil pumps, offering improved styling and ease of
installation. They fit all Big Twins from 1968 to present and do
a great job of enhancing the right side of the motorcycle.
45031 Fits all Big Twin models (except Dyna GlideTM) without a fitting for the primary chain oiler 1968‑91
45030 Fits all Big Twin models with a fitting for the primary
chain oiler (except Dyna GlideTM) 1968-91
45027 Fits all Big Twins 1992-99
PRESTON CYCLE PRODUCTS INC.
1-59
BT Oil Pump
Colony Oil Pump Plugs
Accel Oil Pressure Switch
Oil Screen Plug
FL, FX 1981-99 with o-ring (26263-80).
9644 Chrome
9645 Cad
Oil Pump Check and Relief Valves
FL, FX 1981-99 with o-ring (26263-80).
9634 Chrome
9635 Cad
Tappet Oil Screens (each)
3378
24981-701970-99
Oil Screen Springs for Tappet Oil
13127
24982-70 1970-99 (5 pk)
Tappet Oil Screen, Oil Pump
Check Valve, Relief Valve Plug
Fits 1981-on Big Twins.
Replaces OEM P/N 26263-80
3583
Tappet Oil Screen, Oil Pump Check
Valve, Relief Valve Plug Set
Complete set of 3 plugs fit 1981-on Big
Twins.
Replaces OEM P/N 26263-80
3576
Oil Pump Fitting
USA-made oil pressure switches with
precision calibrated heavy duty contacts, plastic insulator and a bright finish. Fits Evo BT 1984‑99 (not models w/electric oil pressure gauge).
5672 26561-84
Chrome 90 degree fitting for all 1968-92 Big
Twins. Will also work on
many custom applications.(26338-68)
10520 5 Pack
Colony BT Oil Tappet Screen/
Spring 1970-99
Fits all 1970-99 BT and replaces OEM
24981-70 oil screen and OEM 24982-70
spring.
72146
“Super-Pump” Spring Kit,
1972-91 Big Twin
Finally, an answer to low oil pump pressure on 1972-91 Big Twin oil pumps!
This kit consists of three separate
colour-coded springs made from spring
steel. Each spring applies more pressure on the relief valve plunger, thus
controlling the output pressure of the
oil pump. The average output pressure,
(taken at road speed, 55-60 mph) would
be as follows: Blue spring 20psi, Yellow
spring 24psi, Red spring 28psi. At idle
the pressure drops no lower than 10psi.
The customer can select the spring
desired depending on weight of oil
used, driving habits, climate, etc... Plus,
springs are easily changed if one of
these variables change. These springs
work well on S&S and Rev-Tech pumps
as well.
13260
Crane Oil Pump Relief Valve
Spring
Increases engine oil pressure by 2-3
psi. Highly desirable for extended
engine life. Fits 1936-98 “Big Twins”®,
including Evolution®.
34548
Jims BT Oil Pump Shaft Kit
Chrome Allen Screws
Pro Just Relief Cap
Without oiler for 1986-99 models.
30401
1-60
5337 BT 78-on
9762 FXST 92-99, Dyna, FLT 92-98
9774 XL 91-on
31193 1968-99
Chrome Tight Spot Oil Pump
Fitting Set
Features a 5/16” allen socket for easy
installation or removal. Includes 1/8”
NPT nipples.
16329
PRESTON CYCLE PRODUCTS INC.
BT Pinion Gear
Jims BT Oil Pump Drive Gears
Precision machined and heat treated.
31350 Jims 24T 1973-91 (26345-73)
31351 Jims L1985-89 (26349-84)
30153 Preston, as above
Topline BT EVO Pinion Gears
1993-99
PCPColour
29086 Orange (24040-93)
29087 White (24041-93)
29088 Yellow (24042-93)
29089 Red (24043-93)
29090 Blue BT (24044-93)
29091 Green (24045-93)
29092 Black (24046-93)
Topline BT EVO Pinion Gears
1990-92
PCPColour
29044 Yellow (24042-90)
29045 Red (24043-90)
29046 Blue (24044-90)
29047 Green (24045-90)
29048 Black (24046-90)
Topline Pinion Pump Gear BT
1990-92
Topline BT 6 Tooth Pinion
Drive Gear 1993-99
30133 26354-93
30125 26354-90
BT Pinion Spacer 1990-92
11534 Each (24704-90)
Custom
Colony Oil Pump Mounting Kit
Chrome polished allen bolts for Evo
1978-91.
8747
Chrome Acorn Style
1821
9763
Big Twin 1978-91
FXST 92-99, Dyna, FLT 92-98
OEM-Style
Chrome Allen
5337
9762
9774
BT 78-on
FXST 92-99, Dyna, FLT 92-98
XL 91-on
Stock OEM Style
5334
9787
PRESTON CYCLE PRODUCTS INC.
BT 1978-91 Chrome
BT 1978-91 Zinc
1-61
BT Breather/Pinion
Jims Big Twin Pinion Gear 1977-89 (24040-78)
PCPOEM
31309 24040-78
31310 24041-78
31311 24042-78
31312 24043-78
31313 24044-78
31314 24045-78
31315 24046-78
Size
1.4751-1.4756 1.4745-1.4751
1.4737-1.4745
1.4729-1.4737
1.4721-1.4729
1.4715-1.4721
1.4710-1.4715 Colour
ORANGE
WHITE
YELLOW
RED
BLUE
GREEN
BLACK
Jims Breather Gear With Elongated Oil Hole
This steel breather gear has an elongated rear hole to aid
in better crankcase flywheel cavity vaccuum. Designed to
replace the stock plastic breather valve gear.
31696 Fits late 1977-99 BT single cam only
Jims Breather Valve Gear
Steel breather valve for Big Twins. Made from aerospace
quality steel and CNC machined to highest standards for
precise control of exhausting crank case pressure. Designed
to replace stock plastic valve gear. Also available in +.030”
oversize to correct a damaged breather valve hole.
PCPDescription
31254 BT L77-99 standard
31255 BT L77-99 +.030” oversize
Sifton Air Ramp
Fits S&S/Sifton breather gear on 1936-99 models to remove
more air and oil from crankcase. Requires removal of oil
screen for installation.
34021
S&S Big Twin Pinion Gears and Related Parts
Engine Year/ Pinion Shaft
1977-89
Largest
Average
Smallest
Orange
White
Yellow
Red
Blue
Green
Black
334141
334142
334143
334144
334145
334146
334147
Related Items
24T Pump drive gear 193989
Pinion drive gear 1954-89
334232**
Gear spacer 1954-89
334289
Gear nut 1954-89
334244
Keys 1954-89 (10 pk)
10306
1-62
Note: Gear sizes are listed from largest (orange) to smallest (black). This
colour coding sequence is identical to stock H-D coding. When in doubt use a
gear from the middle to the small side of the range. A combination of smaller
gears should provide adequate gear under most circumstances. Both excessive and zero gear lash combinations cause engine noise, but no clearance or
zero gear lash causes binding and premature wear.
** Requires OEM 26345-73 oil pump drive shaft drive gear
PRESTON CYCLE PRODUCTS INC.
BT Breather
S&S BT Steel Breather Gear and Valve Gear
Crankcase Breather Assembly
Mount your breather in plain view instead of hiding it behind
your engine or transmission case. Comes complete with a
one-piece filter molded to a light weight chrome end cap, a
chrome zinc die-cast mounting base with 5/16” inlet and a
hose clamp. The hose clamp holds the filter to the base when
the vent hose is installed.
77101 Complete assembly
4634 Replacement Filter ONLY (no chrome)
2” diameter x 1/2” height
Machined breather valve and gear by S&S. Designed to
replace the stock steel or plastic OEM parts. Offered in stock
duration only in stock O.D. and +.030 oversize (for use in
worn or damaged breather holes). Washers are also available
separately in sets
PCPDescription
334241
Gear only, Std size L1977-99 (25313-77A/B)
334242
Gear only, +.030 L1977-99
334250* Valve gear kit, Std L1977-99 (25313-77A/B)
334260* Valve gear kit, +.030 L1977-99
334249
Washer set, 8pc, all years
*NOTE: Requires the use of 1977-on style and diameter
cam and pinion gears; and steel spacing shims.
ET Breather Kit BT 1978-85
30127
S&S Breather Reed Valve for BT Evo Engines
The functional part of the S&S breather reed valve consists
of three steel reeds that are normally in the closed position.
When the pistons travel downward in the cylinders, the air
in the crankcase is compressed and pressure in the crankcase below the pistons increases. This pressure causes the
reeds to open, allowing the air and oil mist in the crankcase
to escape into the cam chest. When the pistons travel back
upward in the cylinders, a vacuum is created in the crankcase that causes the reeds to close which prevents air from
entering the crankcase. This results in greatly improved oil
scavenging and the maintainance of a slight vacuum in the
crankcase.
Installs easily, just insert into the breather valve cavity.
Available in standard diameter to replace stock rotary style
breather valve and also +.030” diameter for engines with
heavily damaged breather bores.
PCPSize
312096 Standard (1993-99)
312100 +.030” Oversize (1993-99)
PRESTON CYCLE PRODUCTS INC.
1-63
S&S EVO
S&S 96” EVO FLSS Hot Set Up Sidewinder Kit
Recommended for the serious performance enthusiast.
Stock crankcases must be bored to 3-5/8” to accept big bore
cylinders. The 96FLSS Hot Set Up yields 96 cubic inches at
10.2:1 compression ratio. Kit includes 4-5/8” stroker flywheels
assembled with mainshafts and connecting rods; 3-5/8” bore
Sidewinder cylinders and complete pistons, a Super Stock
cylinder head kit with valves and springs installed, manifold
with o-rings and flanges, required hardware, top end gaskets,
an S&S 561 cam, adjustable chrome moly pushrods, an HL2T
kit, a Super E carb kit and installation instructions.
80FLSS 80” S&S EVO Hot Set Up
This high performance stock displacement V2 motor kit is
easily installed providing unforgettable results. The new S&S
Super Stock heads provide extra kick with a 25% higher flow
than stock Big Twin Heads. Improved breathing and maximum combustion efficiency provide impressive performance
gains from low end to top end. The 80FLSS installs easily
because it is assembled like a top-end rebuild from dependable performance engineered components.
80FLSS 80 cubic inch kit includes: Super Stock Cylinder head
kit with valves and springs installed, manifold without rings
and flanges, top end gasket, a 561 cam, adjustable chrome
moly pushrods, an HL2T kit, a Super E carb kit, assorted
hardware, and installation instructions.
900082 With Super E 1993-99 (no pistons)
922026 Pistons STD forged, recessed dome 3-1/2” 10:1
Kits with 10.2: CR.
PCPYears Finish
900120 1984-92Natural
900121 1984-92Black
900122 1993-99Natural
900123 1993-99Black
S&S 3-5/8” Superstock Evo Head Kits
S&S 96” EVO Sidewinder Kit for BT EVO
Designed for BT EVO 1984-99. These flywheels are assembled with heavy duty rods, balanced and trued. Includes
series 1930 forged pistons, complete with rings, pins, retainers, gasket set and instructions. Note: Stock cases will require
a crankcase boring operation to accept these cylinders. For
1990-99 models you must order #334148 pinion shaft conversion kit. Kits feature 96” with 3-5/8” bore, 4-5/8” stroke and a
9.75:1 compression ratio.
PCPFinish
917660 Natural
917661 Black
1-64
Kits include a set of assembled heads clearanced for .631 lift.
Kits also include S&S # 90-1060 3-5/8” forged, low compression standard pistons with rings, pins and clips, necessary
gaskets, manifold and clamps.
S&S cylinders must be ordered for use with these kits.
990014 1984-92 LC
990015 1993-99 LC
PRESTON CYCLE PRODUCTS INC.
S&S EVO
S&S 89” BT Evo Stock Bore Hot Set Up Kit
For 1984-99 Evolution Big Twins with stock H-D cylinder
heads. The Hot Set Up 89 produces significant performance
increases at a reasonable cost and offers a number of options
for future performance increases.
89 FL Hot Set Up kit yields 89 cubic inches with an approximate compresssion ratio of 9.25:1. Kit includes an 89” stroker
with 4-5/8” stroker flywheels assembly, an S&S 561 cam kit,
adjustable chrome moly pushrods, valve springs and a Super
E carb kit. Note: 1977-89 style pinion shaft gears, spacer
and nut are required when installing this kit. For installation in
1990-99 on scratch built engines, order S&S pinion shaft conversion kit #334148. This kit requires special S&S 92-2426
series pistons purchased seperately.
PCP
89”Hot Set Up Kits
322088 1984-92
322078 1993-99
89” Hot Set Up 1984-99 Big Twin
89 FL Hot Set Up yields 89 cubic inches with an approximate
compression ratio of 9-1/4:1 and includes an 89” Stroker kit
with 4-5/8” balanced stroker flywheels and 3-1/2” bore complete pistons, mainshafts and rods assembled, a 561 cam kit,
a Super E carb and installation instructions.
950018
**1990-99 applications will also require #334148.
922426
S&S 92-2426 Series Pistons
S&S Manual Compression Release Kit
Fits 89” BT V2 stock heads and offer 10:1 compression
PCPSize
922426
STD
922425+.005
922427
+.010
922428
+.020
922429
+.030
917211
Natural cylinder and piston kit
917711
Black cylinder and piston kit
S&S manual compression releases are activated by a cable
similar to a choke control. Before starting, the handle is
pulled, which opens the compression releases. When the
engine fires, the increased cylinder pressure automatically
closes the compression releases. The S&S manual compression releases can be used with any style rocker covers.
904925 Manual
904915 Electric
S&S Two-Piece Socket Kit
Special S&S two piece compression release socket kit allows inframe installation of S&S compression releases and protects wiring
from damage during installation.
530045
S&S Cable Knob
Billet accessory knob
for manual compression
release.
508701
PRESTON CYCLE PRODUCTS INC.
1-65
S&S BT EVO
S&S Big Twin Sprocket Shaft Assembly
332004 1970-on S&S SE or SL flywheels
S&S Replacement Flywheels BT EFI 1995-98
4-1/4” and 4-5/8’ stroke EFI flywheels for 1995-98 fuel injected BT are intended for use in stock replacement and fuel
injected performance applications. The drive side flywheel
features a pressed in sprocket shaft for improved rigidity.
Standard tapered S&S crankpin and pinion shaft are used
for ease of service. Notches on the drive side flywheel are
compatible with stock EFI system as well as the new S&S
Variable Fuel Injection (VFI) system.
PCPApplication
322145 4-1/4” EFI style flywheels
322146 4-5/8” EFI style flywheels
S&S 1981-89 Big Twin Pinion Shaft Assembly
332027
332028
Fits std size S&S BL, SL, or stock flywheels. Replaces 24006-80, 24006-83, 24006-87
As above, +.001 oversize. 1.251” (24020-87)
Chrome Billet Crankcase Breather
Includes 1/8” NPT fittings.
77106
Chrome Crankcase Breathers
PCPApplication
77102 3/8”
77103 1/8” NPT
1-66
PRESTON CYCLE PRODUCTS INC.
S&S EVO
S&S 89” BT EVO Kit, 4 5/8” Flywheels 9 1/4:1
S & S Crankshaft Assemblies (Not EFI)
S&S flywheel kits are engineered from the strongest components for maximum potential engine life. Each kit is assembled with heavy duty rods, both shafts and is trued and ready
to install.
4-1/4” Stroke (Stock) BT Evo 89”
950011*BT Evo 1984-89
950012 BT Evo 1990-99
Kit includes: flywheel, sprocket shaft with key and nut, and
cast 3 1/2” standard bore pistons. 89” Stroker kit used with
stock cylinder length. Good for trips with excellent engine
life expectancy. Fits 1981-86.
322489 Kit as pictured .005 O.S.
4-1/2” Stroke BT Evo
950013*1984-89
950014 1990-99
4-5/8” Stroke BT Evo
950015*1984-89
950016 1990-99
*Note: Will fit 1973-84 BT is .001” oversize wrist pin is used
BT 3 Hole Crank Pin Kit
Includes 3 hole crank pin, rod races, standard rod rollers and
retainers.
PCPApplication
34022 L1981-86
Pinion Shaft Conversion Package 1990-99
Kit includes 1977-89 pinion gear, 1954-89 pinion shaft oil
pump drive gear, 1954-89 pinion shaft gear spacer, and 195489 pinion shaft gear nut. Average size (red)- fits S&S shaft
33-2024, 33-2029, or 1977-89 shaft.
334148
S&S Service Components
Flywheel Thrust Washers
322019 Replaces 6506 (each)
S&S Shaft Assembly
PCPApplication
332336 Pinion shaft +.001 XL
1986-on
PRESTON CYCLE PRODUCTS INC.
1-67
Rod Components Multi-Fit
Wrist Pin Bushings
Sold in pairs. Bronze OEM type
PCP Jims OEM Size
1863731356 24316-99 STD
18644
STD
18645
.002
18646
.010
1850731354 24334-36 STD
18597
N/A
.002
1850831355 N/A
.005
18509 24335-36 .010
1850431352 24331-36 STD
18598 N/A
.002
1850531353
N/A
.005
18599 24332-36 .010
Fits
TC 1999-on
TC 1999-on
TC 1999-on
TC 1999-on
BT 1936-98
BT 1936-98
BT 1936-98
BT 1936-98
XL 1957-on
XL 1957-on
XL 1957-on
XL 1957-on
Crank Pins
Crank Pins available from U.S.A. makers, Eastern, Jims,
OEM and Taiwan. American pins are made of 8620
steel, with .062 heat treat penetration.
Note: All crank pins have one or three oil holes.
PCPOEM
Model
Holes/Brand
31140 23961-80A BT L1981-99
3 Jims
31142 23961-80A “ new oil location 3 Jims AF
31151 (less end play)
3 Jims
31149 A Cut Above
3 Jims
31156 23974-87
BT Evo 87-99
3 Jims +.001
32548 23975-87
“
1 USA +.002
3412
23960-80A XL L1981-up
3 Preston
31133 23960-80A XL L1981-up
1 Jims
31134 23960-80A XL L1981-up
3 Jims
Connecting Rod
Roller Sets
Each set supplies enough rollers for
alloy rod cages only.
Big Twins 1973-on
PCPSize
15100 -0002 US
1040 STD
1041 0002 OS
1042 0004 OS
1043 0006 OS
1044 0008 OS
1045 001 OS
4113
002 OS
3548 003 OS
S & S Crank Pin
Includes 2 nuts and key.
PCPApplication
342102 1981-86 BT 1.249 OD and all S&S 1981-on (23961-80A)
342103 1987-on BT 1.250 OD (23974-87)
342602 XL 1981-on and S&S 1.249 OD (23960-80A)
342603 As above, 1.250 OD (23948-87)
S&S Crankpin with Nuts BT 1981-99
PCPSize
342102 (1.249)
342103 (1.250)
342105 (1.251)
342106 (1.252)
Note: Order by crank pin .O.D as required
1-68
Rod Bearing Sets with Cages
Set of cages fitted with standard size Torrington rollers for
connecting rods. Cage material noted!
PCP
OEM Cage
Model
Year
15850 24385-40B Alloy
74 & 80
41-86
15800 24346-87ASteel BT
87-99
PRESTON CYCLE PRODUCTS INC.
Rods
Preston Stock Replacement Rod Sets
Includes new rods, crank pin nuts, cages and standard rollers.
Piston pin bushings are installed and honed for stock wrist
pin.
PCPModel
34004 L1983-99 BT Evo (24281-83)
34008 1986-03 XL (24275-86A)
Always check rod roller fitting before assembly
S&S Supreme Connecting Rods
Are made even stronger than our regular heavy duty rods
and are recommended for all drag strip applications and any
street situation where the best is warranted.
PCPModel/cageYears
347214 BT EVO (steel) 1984-99 .792 pin O.D.
347900 883-1200 .792
1986-99, also for engines with (alloy)
strokes greater than stock but less than 4 3/8 (typically used in 3 5/8 bore 89” & 4” bore 100” engines) (not for stock motors)
7.113” Rod length
S&S Regular Heavy Duty Connecting Rods
Recommended for any street application.
PCPModel/cageYears
347013 BT EVO (steel) 1984-99 .792 Pin O.D. 7.440”
347800 883-1200 (alloy) 1986-99 6.926” rods .792” Pin
Jims BT Connecting Rod Bearing Sets 41-99
Torrington rod bearings and steel cages. They will retro fit to
1941. Available in standard size only. When refitting rods use
this bearing set with Jims oversize crankpins.
31169 24356-87A
S&S Alloy Rod Bearing Retainers BT 1941-99
Replacement roller type for Harley connecting rods.
344020 1941-99 BT (24366-71, 24367-71)
Connecting Rod Race Sets
Rod Races are designed for extreme pressure. Made from
52100 steel and hardened.
PCPModel
Year
Jims
1102
Sportster1954-E86t
977
Big Twin
1936-99
31049
S&S BT Bearing Assembly
Steel cages and STD rollers for 1941-99 models.
344010
PRESTON CYCLE PRODUCTS INC.
1-69
S&S EVO
S&S 1984-99 BT Evolution Cam Specification Chart
PCP
335124
Cam
Application
510V 96” Bolt-in
Valve Timing
Open/Close
Valve Duration
Intake
Intake
Exh.
20/28 52/20
238
252
Exh.
Valve
Lift
510
Spring
Spacing
Required
Tappet
Type
Intake
Exh.
187
178
No
Hydraulic
335073
520
Engines to 96” w/8.5 to 10:1
CR. Good low end/mid range.
0/40
50/2
220
232
.520” .086”
.094”
Yes
Hydraulic
335072
546
For 4” bore engines 9.1:1 to
10.1 CR.
5/55
52/5
240
234
.546” .126”
.106”
Yes
Hydraulic
335076
561
Best cam for 80” to 96” engines. 9.5:1 to 10.5:1 CR.
32/40 50/26
252
256
.560” .252”
.210”
Yes
Hydraulic
335057
563
103”+ street/race cam for 11:1+
CR. Strong top end, easy starting.
32/64 64/32
276
276
.560” .250”
.220”
Yes
Solid or
Hydraulic
20/45 60/20
245
260
.585” .186”
.180”
Yes
Hydraulic
335109
80”-96” engines w/ 10.1:1 to
585V 10.5:1 CR. Larger engines
9.5:1 to 10:1 CR.
335058
600
80”-96” engines w/ 10.5:1 to
11:1 CR. Larger engines 10:1
to 10.5:1 CR.
20/55 60/20
255
260
.600” .218”
.198”
Yes
Hydraulic
335080
631
Hottest cam for all high RPM
engines. 11:1+ CR, 12:1+ for
smaller engines.
34/61 66/29
275
275
.630” .281”
.221”
Yes
Solid or
Hydraulic
335108
640
Big inch engines 10.5 to 11.5:1.
Supplied with 124” SSW+.
25/60 65/20
265
265
.640” .222”
.192”
Yes
Hydraulic
Notes: Timing designation is function of zero lash @.053” off base circle.
Lifts at TDC are measured at the valve and are for reference only.
Overlap valve lifts must be checked on assembled motor.
Minimum valve to valve clearance of .040” is recommended.
All cams require spring spacing.
Sifton Cam Chest Kit BT 1987-99 Evo
Includes Sifton 140 cam.
21766
1-70
Lift @ TDC
PRESTON CYCLE PRODUCTS INC.
S&S EVO
S&S 561 Cam
Works in all displacement Big Twin V2’s with a variety of
compression ratios, ideally suited for stock to 88” engines with
up to 11 to 1 compression, 96” with 10 to 1 and 98” and larger
engines with no greater than 9.5 to 1 compression. Moderate
duration makes for great mid range performance where most
riding is done. Valve spring spacing and normal clearancing
checks required. Supplied in all S&S Hot Set Up Kits.
S&S 561 Master Cam Kit
Includes cam, springs, HL2T spacer kit, adjustable pushrods
and instructions.
PCPDescription
335015 1986-99 w/titanium top collars
335076 Cam only
S&S 563 Cam
Best suited for 96” and larger BT V2 street and racing engines
with higher compression ratios. Most effective on top end
from about 4500 RPM on up. Good starting because of long
duration. Valve spring spacing and other normal clearancing
checks required.
S&S 563 Master Cam Kit
Includes cam, springs, HL2T spacer kit, adjustable pushrods
and instructions.
PCPDescription
335025
1986-99 w/steel top collars
335057
Cam only
S&S 502 Cam
S&S 562 Cam
For all displacement Big Twin V2’s with higher compression
ratios where starting and some detonation problems exist.
Longer duration provides best performance for stock to 3-5/8”
bore engines in the 5500 to 6500 RPM range and larger
bores such as 4” between 3500 and 5500 RPM. Valve spring
spacing and other normal clearancing checks required.
S&S 562 Master Cam Kit
Includes cam, springs, HL2T spacer kit, adjustable pushrods
and instructions.
PCPDescription
335019
1986-99 w/steel top collars
335021
1986-99 w/titanium top collars
For up to 93” Big Twins 1984-on with no greater than 9.5 to 1
compression. ”Bolts-in” and works with stock or ported heads
at 5000 RPM. About 13 horsepower gain (approximately 20%)
over stock is realized on our test engine. Valve spring spacing
not required. Other normal clearancing checks recommended.
S&S 502 Master Cam Kit
Includes cam, springs, HL2T spacer kit, adjustable pushrods
and instructions.
PCPDescription
335009 1986-99 w/titanium top collars
Andrews Gauge Pins
212105 Gauge pins .105” diameter pins (pair)
212116 As above .108” diameter pins (pair)
PRESTON CYCLE PRODUCTS INC.
1-71
ANDREWS
Evolution 80 Engine Cams 1984-99
Performance cams mean extra power for evolution engines. Hydraulic lifters are capable of 6000+RPM with stock springs and
no valve float. Aluminum (T7) or chrome-moly pushrods (both fully adjustable) are available to match any of our camshafts.
Aluminum pushrods are lighter while the chrome-moly steel pushrods are more rigid for high performance. Titanium spring collars will fit stock keepers and springs. E-Z install pushrods can be installed without removing fuel tanks or rocker boxes.
Titanium spring collars will fit stock keepers and springs.
50% Lighter than stock
 More spring travel (+.050 over stock)
293110 Titanium collars (set of 4)

292215 E-Z install aluminum pushrods (set of 4)
292245 E-Z install chrome-moly steel pushrods (4)
Touring and Performance Cams
Duration
Valve Lift @
PCP# Grind Timing(*).053 .020
Lift TDC Springs
Stock (L)
01/37
218 266
.495 .091 Stock
88-91
53/-01
232 280
.495 .083
Stock (N)
02/30
208 250
.472 .070 Stock
92-on (carbs) 31/-09
202 242
.472 .049
291113 EV13 15/31
226 270
.485 .161 Stock
45/13
238 280
.495 .148
(OK with fuel injectors or carburetors)
291123 EV23 10/30
220 255
.498 .134 Stock
40/08
228 264
.498 .121
(OK with fuel injectors or carburetors)
291127 EV27 20/36
236 270
.495 .182 Stock
44/16
240 274
.495 .166
(OK with fuel injectors or carburetors)
291130 EV3 21/37
238 280
.495 .197 Stock
43/15
238 280
.495 .159
(OK with fuel injectors or carburetors)
291146 EV46 25/41
246 283
.495 .207 Stock
49/17
246 283
.495 .163
291151 EV51 28/44
252 286
.510 .233 Stock
54/22
256 290
.510 .195
291159 EV59 28/48
256 290
.560 .236 HI-LIFT
56/24
260 294
.560 .208
291172 EV72 30/54
264 298
.560 .246 HI-LIFT
60/28
268 302
.560 .230
(*) Timing
1-72
Application
Listed for reference. 1984-87 cam is 212 deg. int.,
202 deg. exh., .472” lift on both valves.
Listed for reference. ‘N’ cam is close to 84-87
specs. California “C” cam is 178 deg. duration.
Bolt-in street/touring cam for heavy bikes. Much
more low and mid-range power than either stk cam.
Mild bolt-in street/touring cam with more torque and HP for all around riding with stock comp. ratio. Similar to stock L cam but more output. Pulls from 1800-5200 RPM
Bolt-in street cam with fast open and close ramps.
Similar timing to EV3 but designed to produce a very broad torque band. Pulls 2000 to 5500 RPM.
Bolt-in street cam for light bikes (FXRS, etc.). Lots
more mid-range and upper end power. Smooth idle,
6000 RPM cam with stock head and springs.
Bolt-in performance cam with fast open and close
ramps. Longer duration than EV3 but higher static comp. pressure for wide torque band to 6000+RPM
Easy installation with longer duration for modified
street engines with hydraulic lifters. Power range from 3000-6500 RPM.
Upgraded EV57, fast ramps for modified 80” to 88”
motors. Use with Andrews springs and collars. Very broad power band; 6000 RPM. OK for hyd. lifters.
Upgraded EV7, for 92”+ street motors. Use with
Andrews springs and titanium collars. Very broad power band, 2800-6000 RPM. OK for hyd. lifters.
PRESTON CYCLE PRODUCTS INC.
Lifter Base
Chrome Tappet Block Covers - Stamped Steel
They fit over stock units, maintaining the original contours.
Each cover has a hidden slot in the back which permits it
to be installed in minutes without removing your pushrods.
These covers are held in place with a small amount of silicone
adhesive which is provided. Four 12-point chrome screws
are also included to replace the four zinc-plated OEM screws
which protrude slightly through the holes in the covers. Sold
in sets.
45040 Fits all Evolution® Big Twin models from 1984-99
45042 Fits all Sportster EVO 1986-90
Diecast BT EVO Tappet Covers - All Years
Chrome tappet guide block covers for BT EVO. Each cover
has a slot which allows it to be installed without removing the
pushrods. Simply lift pushrod lower covers and insert chrome
covers. Designed as a press fit, but industrial sealant (not
supplied) such as silicone is recommended.
45039 Set, as shown
5299 Chrome 12 point screws (if required) 1976-99
Chrome Lifter Block Bolt Caps for 1976-99 Big Twin
Our chrome lifter block bolt caps are finely machined from
aluminum then plated with a chrome finish. They fit all 76‑99
Big Twin models and install easily onto the stock 12‑point
mounting bolts, using a dab of clear silicone.
44001 (8 pack)
Chrome Tappet Block Cover
Includes screws and fits BT Evo 1984-on.
45267
Chrome Allen Style
5315
Colony Lifter Base Screw Kit
Polished allen bolts for BT 1976-99.
8726
Big Twin 1976-99
Chrome Acorn Style
1788
2632
5503
9765
9766
Big Twin 1976-99
Late Lifter Bases to Pre-1976
Cases 1/4-24 Thread
XL 883/1100 1986-90
XL 1991-94
XL 1995-on
12 Point Style
5299
5300
PRESTON CYCLE PRODUCTS INC.
BT 1976-on Chrome 1/4-20
BT 1976-on Cad 1/4-20
1-73
Lifter Base
Jims Evo Billet Tappet Blocks with Tappets
Made from 7075-T651 this kit features Big Axle Power Glide
tappets. Accomodates a gross valve lift of .625” at the valves,
leaving a clearance of .035” roller to block free play. If using
a cam with higher lift, a simple modification is needed. Blocks
will clear most small base circle cams having lift of .655” or
more.
These tappet blocks are machined to the centre line of the
cam and hold + .002”. Also, the bores are held perpendicular
to the mounting flange to a + .0002”. Kit includes blocks, 4 big
axle “Powerglide” tappets, gaskets and chrome screws.
EVO Billet Chrome 7075-T651 Tappet Blocks
These tappet blocks are designed to accomodate a gross
valve lift of .655” at the valves. This is about .350” at the
tappets, leaving a clearance of .035” roller to block free play.
Will clear most small base circle cams having a lift of .600” or
more. Any cam over .550” lift needs to be checked and should
have .035” to .045” roller to block clearance. If using a cam
with a higher lift, a simple modification to the tappet block is
required. Caution: you still need to follow manufacturers guide
lines. Kit includes blocks, gaskets and chrome screws.
31264 Billet chrome tappet block kit.
PCPDescription
31263 Kit with chrome blocks for use on BT 1984-on.
S&S Big Twin Black Tappet Guide Set
Jims BT Evo Tappet Block Kit
Stock style black tappet guide set is cast from 356-T6 aluminum and is designed to be stronger, resist wear and last
longer than stock. Set includes gaskets and mounting screws.
Fits stock style and S&S Super Stock evolution cases.
335324
31261 With polished pushrod covers
Big Twin Evo Chrome Tappet Blocks
Nice quality set of billet style lifter blocks, chrome plated to fit
Big Twins 1984-99.
32336
1-74
PRESTON CYCLE PRODUCTS INC.
Lifter Base
Evo Tappet Block Covers
Finned design coordinates with cylinders to completely cover
tappet blocks. Installs with silicone adhesive and does not
require the removal of tappet blocks.
PCPDescription
45252 Chrome cover with black fins
S&S Polished Billet Tappet Blocks BT 1984-99
S&S polished tappet blocks are machined from solid aluminum billet providing superior quality and dimensional precision in a great looking product. This set can be used on engines with stock style crankcases, and for engines using S&S
Special Application crankcases with .250” offset cam chest.
335323 Polished tappet block set
Sifton Lifter and Pushrod Assembly
Complete assembly includes 4 hydraulic lifter tappets, 4 hydraulic lifter units, 4 pushrods and lifter bases.
PCPApplication
30033 Big Twin 1986-99, chrome
21706 As above with solids
Big Twin Evo Tappet Blocks
S&S tappet blocks are cast from 356-T6 aluminum and
designed to be stronger, resist wear and last longer than
stock. The clean looking, burnished aluminum finish matches
S&S Super Stock crankcases and can readily be painted or
polished as desired.
335301 As shown
335309 For engines using Special Application crankcases with .250” offset cam chest
Sifton Evo Performance Cam Kit
Includes cam E-Z install pushrods, chrome lifter bases and
roller tappets. (.495 lift)
32337
PRESTON CYCLE PRODUCTS INC.
1-75
Lifters
Jims Hydrosolid Tappet
This tappet performs like a hydraulic tappet from start up to
about 5500 rpm and then turns into a solid from 5600 rpm
on. When solid it adds 3-6 more useable horsepower. When
springs start to surge the tappet rollers start lofting off the
back side of the cam and will not pump up allowing your
valves to hit. Must use adjustable pushrods.
PCPApplication
31644 BT 1984-99, XL 1986-90 OD .8425”
31645 As above +.002”
31647 Twin Cam 88 XL 2000-on OD .8425”
31650 1/4” longer Twin Cam 88 XL 2000-on OD .8425”
Tappet Lifter BT EVO 1986-99
29000
29026
30150
30151
30152
STD. T/L-USA (18523-86A)
As above (4 pack)
STD Sifton
.002 Sifton
.005 Sifton
Tappet Roller Repair Kit BT EVO & XL 86-on
High quality tappet rollers & axles. Contains new roller assembly and roller pin.
15624 Roller kit for 4 tappets
15623 Roller kit for one tappet
Cast Tappet Blocks
PCP OEM 29000 18523-86
15623 18534-86
15624 --
29001 18540-83A
29002 18542-83A
79270 18633-48C
79273 18634-48B
79271 18633-48D
79274 18634-48C
Description
Tappet with Roller
Roller with Pin
Roller with Pin
Tappet Block/Rear
Tappet Block/Front
Gask., rear tappet .031
James front tappet .031
James rear tappet .020
James front tappet .020
Year
86-99
86-99
86-99
84-99
84-99
48-90
48-90
91-99
91-99
Sifton Hydraulic Tappet Unit Set
4 Tappet set features maxi-axle roller and pin design and an
unique “no-bleed” integral pump unit. Pump design features
full hydraulic action up to 5000 RPM, above that it acts like a
solid unit.
PCPSize
30140 STD
30141 .002
1-76
Jims Adjustable STD Tappet
Fits Big Twin 1984-99 and XL 1986-90. Sold each.
31128 18523-86SA
PRESTON CYCLE PRODUCTS INC.
U/M
Each
Each
Set
Each
Each
10 Pk
10 Pk
10 Pk
10 Pk
Lifters
Solid Tappet BT Evo 1984-99 and XL 1986-90
Must use adjustable pushrods. (109 grams)
Big Axle Size (STD O.D. .8425) Jims
31619
STD
31620
.002
31621
.005
Jims Power Glide Hydraulic Evo 1984-99 and
XL 1986-90 (18523-86)
STD O.D. .8425. (149 grams)
Big Axle Std
Size
31625
STD
3162631127.002
31627
.005
Adjustable Solid Evo Tappet with Screw Nut
BT 1984-99 and XL 1986-90.
Requires shorter pushrod available from Axtel. (126 grams)
Big Axle Size Jims
31622
STD
31623
.002
31624
.005
Jims XL and Buell 1991-on Solid Tappets
Clearanced for about .700 lift. Use with adjustable pushrods.
(123 grams)
Big Axle Size (STD O.D. .9035)
31631
STD
31632
.001
31633
.002
31634
.005
S&S Hydraulic Tappets
Tappets fit all BT V2 style and XL 1986-91 engines. These
tappets feature a larger inner bearing race to reduce bearing
stresses. A redesigned plunger assembly better withstands
forces associated with heavy-duty valve springs and pushrods
typical to high performance applications. Revised metering
device precisely controls oil delivery to top end, insuring rapid
lifter pump up and reducing the possibility of oil starvation to
the bottom end.
335342 Each
335352 4 Pack
Jims Billet Steel Power Glide Solid Tappet
XL 1991-99 (18526-PG)
Clearanced for about .700 lift. (143 grams)
Big Axle Size
31639
STD
PRESTON CYCLE PRODUCTS INC.
1-77
TC Cylinders/Pistons
VT BT Evo 83” Bolt-On Cylinder Kit
Includes 10:1 compression Wiseco forged piston kit (Fitted),
No case boring required.
PCPFinish
34826 Black
34827 Silver
35548 Piston set
35549 Ring set
VT 103” TC-96 Cylinder Kits for 2007-2010
Includes 9:1 or 10:1 Wiseco forged piston kit fitted to cylinder.
BlackSilverCR
34800348019:1
348023480310:1
25407
-
Gasket kit
The Sifton cylinders have a very thick, large O.D., “cast in”
liner which has been proven to be an important factor in
maintaining thermal stability which is the ability to retain cylinder bore dimension through repeated heat cycles.
Evolution Cylinder Oil Passage Drain Tubes
For stock bore size cylinders only. Each kit includes tap, hex
wrench, and 2 drain tubes.
30123 Kit
30124 Replacement tubes only (pr)
1-78
Sifton Racers Evo Stud Kit
Includes 8 inserts, drill tap and 8 chrome moly studs. Allows
more torque to be applied which helps cure oil leaks and
protects case threads during disassembly.
PCPDescription
59448 Complete shop kit
60104 8 Studs only
10052 8 Inserts only
PRESTON CYCLE PRODUCTS INC.
TC Cylinders/Pistons
VT Cylinder and Piston Kits L1985-99 1340cc
Honed and pre-fitted with stock compression cast pistons and
Hastings rings. They are ready to run and will require break-in
as suggested in the appropriate shop manual. Sold in pairs
for stock stroke only. Order gasket set separately
PCP FinishCompression
34820 Black8.5:1
34821 Silver8.5:1
34822 Silver 11:1
3-5/8” Big Bore Cylinder for 4-1/4” Stroke Evo
Forged pistons with Hastings rings are pre-fit in heavy wall
cylinders. Cylinder sets 3-5/8” and larger require case
boring.
PCP Ratio PistonFinish
34828 9.25:1 WisecoSilver
34829 9.25:1 WisecoBlack
3483210.5:1Sifton Black
3483310.5:1Sifton Silver
348349.25:1Sifton Black
348359.25:1Sifton Silver
34830 Silver cylinder (each)
34831 Black cylinder (each)
T/L EVO Cylinders 1984-99
Sold each and includes piston, rings and wrist pin.
PCP ModelDescription
65200 1340
USA, silver (16510-83A)
65209 1340
USA, black wrinkle (16512-86A)
VT 93.4” Cylinder Kits
Includes Wiseco 9.5:1 compression piston set with rings prefit to new 3.75” cylinders. Cases must be bored to accept
this kit.
PCPFinish
34823 Silver
34824 Black
BT Evo Cylinder 1984-99
These front & rear cylinders do not include pistons. Sold each
PCPFinish
34812 Stock (16510-83)
34809 Black (16512-86A)
PRESTON CYCLE PRODUCTS INC.
1-79
S&S Cylinders/Pistons
S&S 3-5/8” Bore V2 Big Twin Cylinders and
92-1900 and 92-1930 Series Pistons
The 92-1900 and 92-1930 series pistons are forged, flat top, 3-5/8” big bore pistons used in S&S Sidewinder kits and engine
kits for V2 engines with stock style cylinder heads. The 92-1900 series is used for 4-1/2” stroke BT engines with stock diameter (8-1/2”) flywheels, and for 4-3/4” stroke BT engines with 8-1/4” diameter flywheels. The 92-1930 series is a modified version of 92-1900 which is clearanced for 4-5/8” stroke BT engines with stock 8-1/2” diameter flywheels. Replacement cylinders
and cylinder kits with pistons are available for the Sidewinder kits and engine that S&S offers. Cylinders are available in natural
and black powdercoat finish. Stock crankcases must be machined to accommodate the larger spigot diameter.
Displacement
88”
93”
96”
98” SD*
Stroke
4-1/4”
4-1/2”
4-5/8”
4-3/4”
Bore
3-5/8”
3-5/8”
3-5/8”
3-5/8”
Cylinder Length
5.375”
5.500”
5.565”
5.625”
9:1
9.5:1
9.75:1
10:1
Cylinders only- natural
917000
917100
917200
917300
Cylinders only- black
917500
917600
917700
917800
Cylinders w/pistons- natural
917002
917102
917202
Replacement Piston Kits
Forged
Forged
Forged
Forged
Rings
Moly
Faced
Standard Piston
921900
921900
921930
921900
941210
+.010
921901
921901
921931
921901
941211
+.020
921902
921902
921932
921902
941212
+.030
921903
921903
921933
921903
941213
+.040
921904
921904
921934
921904
941214
Piston Deck Height
1.200”
1.200”
1.200”
1.200”
Compression (stock heads)
Forged Pistons
Recommended Piston Fit:
Close: .0015” - .0020”
Loose: .0030” - .0040”
Wristpin
Hardened
Keeper
Clip
949256
949254
Notes: Cylinder with piston kits include cylinders, piston kit, head gaskets, base gaskets and exhaust gaskets. All piston kits include
rings, wristpins and clips.
*SD= small diameter flywheels.
S&S Chrome Head
Bolt Covers
Dress up your engine with
these magnetic chrome
head bolt covers. Easy
installation, no tools or
adhesives required. A
powerful magnet holds
cover in place, yet allows
easy removal. Chrome
plated steel looks great on
any engine especially on
polished engines. For S&S
head bolts only.
500333 Set of 4
1-80
BT Evo Oil Fix Kit
Kit includes 2 cylinder base gaskets and 2 oil jet controls
which regulate the oil coming from the head through the
barrel and into the case, preventing the oil from touching the
base gasket which may cause leaking.
25637 Kit
PRESTON CYCLE PRODUCTS INC.
S&S Cylinders/Pistons
S&S Head Bolt Kits for V2 BT Engines (8 pack)
PCP
933010
Stroke
Cyl.
Length
S&S 89”,
HD 80”
4-1/4”
5.550”
S&S 93” V2
4-1/4”
5.500”
Engine
Cylinder Head
Type
1988-90,
1991-on HD
S&S 3-1/2” Bore V2 BT Evo Style Cylinders and
92-2420 Series Pistons
The 92-2420 series pistons are cast 3-1/2” bore stroker pistons designed for use with 4-5/8” stroke flywheels to convert
stock 80” V2 Big Twin engines to 89”. These pistons are
normally used with stock HD cylinders, however cylinder and
piston kits are available for engines that require new cylinders.
Displacement
S&S Service Components
Cylinder Studs
312321 BT 1985-99 (16837-85C) (each)
60106
BT 1985-99 (16837-85C) (8 pack)
Stroke
4-5/8”
Bore
3-1/2”
Cylinder Length
5.550”
Compression
Stock Heads
9.25:1
Compression
89cc Heads
9.8:1
Compression
79cc Heads
10.4:1
Cylinders Only
917210 917710
Cylinders
w/Pistons
917211
917711
Cast
Moly
Rings
Natural
Replacement
Piston Kits
S&S Teflon Button Style Keepers
Keepers are available in different sizes (thickness) to control
wrist end play that varies with bore size. Button style keepers
must be fully supported by wrist pin hole. Sold as 4 pack.
3 5/8” Bore
PCP
Range (Series 1800, 1830)
949258
STD to +.030
949259
+.040 to +.070
3 7/16” and 3 1/2” Bore (Series 2800-2900)
PCPRange
949251
STD to +.040
949252
+.050 to +.090
3 3/16” Bore (Series 3700)
PCPRange
949351
STD to +.070
89”
Cast Pistons
Recommended
Piston Fit:
Close: .0008“ - .0013“
Loose: .0020” - .0025
“
Black
Standard
922426 942216
+.005
922425 942220
+.010
922427 942217
+.020
922428 942218
+.030
922429 942219
Wristpin
Hardened
Keeper
Clip
949256
949254
Notes: Cylinder with piston kits include cylinders, piston kit, head gaskets,
base gaskets and exhaust gaskets. All piston kits include rings, wristpins and
clips.
S&S Head Bolt Washers
PCPThickness
507096 .100” (5 pack)
507095 .250” (10 pack)
“C” Style Piston Pin Clips (most other series)
949254
4 Pack
PRESTON CYCLE PRODUCTS INC.
1-81
Pistons
T/L BT Stock Style Evo Pistons USA
PCP
65240
65241
65242
65243
65244
OEM
21940-83
21941-83
21942-83
21943-83
21944-83
Description (Sold for 1 cylinder)
Piston and rings STD
As above +.005”
As above +.010”
As above +.020”
As above +.030”
T/L BT Evolution 1340 Cast Piston Kit
S&S 3-5/8” Forged Pistons for 4-1/4” to 4-5/8”
The S&S 92-1060 series pistons are forged 3-5/8” Evo big
bore pistons designed for use with S&S V2 style Superstock
cylinder heads. These kits are used in V2 BT style S&S
Sidewinder kits and long block engines. The 92-1060 series
is used for 4-1/4” and 4-1/2” and 4-5/8” stroke engines with
stock diameter (8-1/2”) flywheels.
Note:
4-1/4” = 88” with 9:1 compression and 5.375” cylinders
4-1/2” = 93” with 9.5:1 compression and 5.500” cylinders
4-5/8” = 96” with 9.75:1 compression and 5.565” cylinders
Piston deck height of 1.200”
PCPSize
921060
STD
921061
+.010
921062
+.020
921063
+.030
921064
+.040
921066
+.060
10:1 High compression piston kit for use with stock Evo 1340
cylinder heads. For race application only, kits include pistons,
rings, clips and pins. Fits all 1984-99 Evo 1340 engines with
stock cylinder heads. Note: always check piston to valve
clearance with modified dome pistons and non-stock camshafts.
65253 .010 (22193-98)
S&S Evo 4” Forged Piston Kit for 113” Motor
PCPSize
921410 STD
921411 +.010
921412 +.020
S&S 4” Evolution Ring Sets
S&S 3-5/8” Evolution Ring Sets
Ring sets are sold for a complete engine. Top ring .062, 2nd
ring .062 and oil ring .158.
PCPSize
941210 STD
941211 +.010”
941212 +.020”
941213 +.030”
941214 +.040”
1-82
Ring sets are sold for a complete engine.
PCPSize
941300 STD
941301 +.010”
941302 +.020”
941303 +.030”
PRESTON CYCLE PRODUCTS INC.
Pistons, Multi-Fit
BT EVO 1984-99 80” (3.500 OD) 8:1
1200 XL Evo 1988-03
Piston kits include 2 STD compression pistons with pins,
clips and a moly ring set. Hastings rings are sold in sets for 2
pistons and are available in cast or moly styles with
1/16” (.062) compression rings.
Piston Hastings Rings
SizeKit Cast Moly
STD 3587035100 35260
.005 3587135101 35261
.010 3587235102 35262
.020 3587335103 35263
.030 3587435104 35264
Piston kits include 2 STD compression pistons with pins, clips
and a moly ring set. Pistons sold each include a pin and clips
only. Hastings rings are sold in sets for 2 pistons and are
available in cast or moly styles with 1/16” (.062) compression
rings.
PistonPistonHastings Rings
SizeKit EachCast Moly
STD 35600358903510035260
.005 35601358913510135261
.010 35602358923510235262
.020 35603358933510335263
.030 35604358943510435264
.040 35605358953510535265
Rowe Piston Ring
Compressor
Necessary bands for
2-7/8” to 4-1/8”.
26133
Sportster Evolution 883
Piston kits include 2 STD compression pistons with pins, clips
and a moly ring set. Pistons sold each include a pin and clips
only. Hastings moly rings are sold in sets for 2 pistons with
1/16” (.062 ) compression rings.
PistonPistonHastings Rings
SizeKit EachMoly
STD 355583586035220
.005 355593586135221
.010 355603586235222
.020 355613586335223
.030 355623586435224
.040 355633586535225
Compression Ratio
Wiseco XL High Performance 10.5:1 Piston Kit
Kits include forged pistons, Hastings rings, retainer clips and
chrome piston pins. Hastings rings have a .062” top and 2nd
ring and a .158” oil ring. Skirt coated piston has a dome volume of +3.63cc. Fits 2004-10 Sportsters.
PCP
CC Displ.
Bore
35923
1200cc
STD (3.498”)
35924
35925
35930
Sportster 900cc (3” Bore) Stock 9 to 1; Low (Not available)
Sportster 1000cc (3-3/16 Bore) Stock 9 to 1; Low 8.4 to 1
Harley 74: 1200cc (3-7/16” Bore) Stock 8.5 to 1; Low 7.5 to 1;
High 10.0 to 1.
Harley 80” 1340cc (3.298 Bore) Stock 8 to 1; Low 7 to 1
Stroke
.010 (3.508”)
3.812”
.020 (3.518”)
Cometic top end gasket kit (W6378)
Valve pocket dimensions are measured from deck height:
Intake/Exhaust Pocket: Depth: -167”
Diameter: 2.100”
Piston Pin Locks
11051 Snap ring Evo 1983-on (22589-83) (10 pk)
PRESTON CYCLE PRODUCTS INC.
1-83
Wiseco Piston Kits
Wiseco’s extensive R&D programs have revolutionized the
power and performance of Wiseco’s HD piston kits. All Wiseco pistons are forged for superior strength and dependability. Kits include forged pistons, rings, circlips and wrist pins.
XL 883 Evo Overbore to 1200cc 1986-10
XL 1200 Evo Flat Top 1988-03
9:1 compression with Hastings X Ring package: .062” top
ring, .062” second ring and .158” oil ring. All XL Evo and Buell
with stock heads.
PCP
Wiseco Bore Ring Set Per Engine
35855 K1660STD35260
35856 K1661.01035262
35857 K1662.02035263
35858 K1663.03035264
35859 K1664.04035265
Reverse dome, 9.5:1 compression with Hastings X Ring
package: .062” top ring, .062” second ring and .158” oil ring.
No headwork required.
PCP
Wiseco Bore Ring Set Per Engine
35850 K1655STD35260
35851 K1656.01035262
35852 K1657.02035263
35853 K1658.03035264
35854 K1659.04035265
Wiseco Evo XL 883 to 1200 Piston Kit 1986-10
Wiseco XL Domed Piston Kit 1988-03
Domed piston kit fits all Evo XL & Buell with stock 1200 heads
through to 2003. This kit offers 10.5:1 compression and a
3.812” stroke. Top ring is .062”, 2nd ring is .062” and oil ring is
.158”. No cylinder head modification is required and top end
gaskets are available separately. Kits include forged pistons,
rings, circlips, and chrome wrist pins.
PCPBore
35980 STD 3.498”
35981 +.010 3.503”
35982 +.020 3.508”
35983 +.030 3.518”
35984 +.040 3.528”
These kits offer 10:1 compression and 3.812” stroke with no
cylinder head modification required. Top ring is .062”, 2nd ring
is .062” and oil ring is .158”. Kit includes forged reverse dome
pistons, rings, circlips and chrome wrist pins.
35887 STD 3.498”
35888 +.010 3.508”
35889 +.020 3.518”
Wiseco XL 883 to 1200 Piston Kit 1986-10
This kit offers 8.5:1 compression and 3.812” stroke with no
cylinder head modification required. Top ring is .062”, 2nd
ring is .062” and oil ring is .158”. Fits Evo 883 XL overbore to
1200cc (73 cu. in.) models. Kit includes forged reverse dome
pistons, rings, circlips and chrome wrist pins. Skirt coated
pistons have a dome volume of -13.7cc.
Wiseco Wrist Pins (each)
35937 1340cc BT Evo 1985-99
Wiseco wrist pin circlips (pairs)
35933
PCP
All Wiseco pistons
NOTE: Hastings X rings and Wiseco XC rings are NOT
interchangeable. Wiseco XC rings sold per cylinder.
1-84
CC Displ.
Bore
35845
1200cc
STD (3.498”)
35846
1207cc
.010 (3.508”)
35847
1214cc
.020 (3.518”)
Valve pocket dimensions are measured from deck height:
Intake/Exhaust Pocket: Depth: -215”
Diameter: 2.100”
PRESTON CYCLE PRODUCTS INC.
Stroke
3.812”
Wiseco Piston Kits
35985
Wiseco BT Evo 1984-99 (80 cu. in.)
8.5:1 compression with Hastings X Ring package. Will fit
Screamin Eagle cylinder head with 9.75:1 compression.
PCP
Wiseco Bore Ring Set Per Engine
35975 K1640STD35260
35976 K1641.01035262
35977 K1642.02035263
35978 K1643.03035264
35979 K1644.04035265
Wiseco BT Evo 3-5/8” B.B. 1984-99
Also fit thru 1997 stock stroke 4.250” (88 cu in.). 9.25:1 compression with Hastings X ring package .062” top ring, .062”
second ring and .158” oil ring.
PCP
Wiseco Bore Ring Set Per Cylinder
35985 K1670STD35961
35986 K1671.00535962
35989 K1674.03035965
Wiseco BT Evo 3-5/8” B.B. 1984-99 Domed
Wiseco BT Evo 1984-99 (80 cu. in.)
10:1 compression with Hastings X Ring package: .062” top
ring, .062” second ring and .158” oil ring.
PCP
Wiseco Bore Ring Set Per Engine
35760 K1665STD35260
35761 K1675.00535261
35762 K1666.01035262
35763 K1667.02035263
35764 K1668.03035264
35765 K1669.04035265
Also fit thru 1997 stock stroke 4.250” (88 cu in.). 10:1 compression with Hastings X ring package .062” top ring, .062”
second ring and .158” oil ring.
PCP
Wiseco Bore Ring Set Per Cylinder
35875 K1676STD35961
35876 K1677.00535962
Wiseco BT Evo Piston Kit 1984-99
Hastings Moly Piston Ring Set XL 2004-on Evo
XL 1200cc rings are sold in sets to do 2 pistons (1 engine).
Size
Hastings 2M5069
STD
35285
.005
35286
.010
35287
Bore: 3.498 (88.85mm)
Comp. Ring: 1.2mm Top ring
1.5mm 2nd ring
Oil Ring:
2.5mm
Kits have 11:1 compression with 4.250” stroke for 80 cubic
inch engines. Hasting X rings, top ring is .062”, 2nd ring is
.062” and oil ring is .158”. Kits include forged pistons, rings,
circlips and chrome piston pins.
35966 STD 3.498”
35967 +.005 3.503”
35968 +.010 3.508”
35969 +.020 3.518”
35972 +.030 3.528”
35973 +.040 3.538”
PRESTON CYCLE PRODUCTS INC.
1-85
KB Pistons
The Keith Black 390 Hypereutectic alloy is cast in a permanent
steel mold which makes it possible to build a light weight piston.
The durable Hypereutectic piston generates more power, uses less
fuel, runs quiet and lasts longer than most other pistons. These
pistons make loose, noisy, oil burning pistons obsolete. The low
heat transfer of the alloy keeps the skirts cool so piston expansion is minimal. Test engines have been run with as little as .0005”
piston-to-wall clearance. You can increase power and economy by
the simple combination of a low heat transfer piston and high compression ring placement. The high ring placement alone reduces
detonation and increases the top ring temperature. It is important
to see the ring end gap instructions to avoid ring butting.
The KB piston will make maximum power at 2 to 4 degrees less
total timing than conventional pistons. All KB piston sets are supplied with Hastings moly ring sets.
WHILE INVENTORY LASTS
Big Twin Evo 1984-99
Big Twin Evo 1984-99
Big Twin Evo 1984-99
Big Twin Evo 1984-99
Big Twin Evo 1984-99
XL 1200cc 1988-03
XL 1200cc 1988-03
XL 883-1200cc Conversion 1986-on
(8.5:1, Flat Top, 4.250”
Stroke)
PCPOEM Size
35720 KB258-30.030
35721 KB258-40.040
(10.0:1, Flat, 3-5/8” Bore,
Stock Stroke) 88”
PCPOEM Size
35774 KB293-STDSTD
35777 KB293-20.020
35778 KB293-30.030
(9.5:1, Dome, 4.250”
Stroke)
PCPOEM Size
35768 KB305-STDSTD
(9.0:1, Flat, 3.812” Stroke)
PCPOEM Size
35710 KB264-STDSTD
35711 KB264-05.005
(10.5:1, .200 Dome, 4.250”
Stroke)
PCPOEM Size
35722 KB266-STDSTD
35727 KB266-40.040
With high cams.
(9.0:1, Flat, 3.812” Stroke)
PCPOEM Size
35750 KB295-30.030
(10.0:1, 3-5/8” Bore, 4-5/8”
Stroke) 93-98”
PCPOEM Size
35783 KB298-20.020
35784 KB298-30.030
35785 KB298-40.040
(9.0:1, Dish 3.812” Stroke)
PCPOEM Size
35729 KB272-05.005
35730 KB272-10.010
Special Clearance Requirements of KB Pistons
Suggested Piston to Wall Clearance
KB Pistons can be installed tighter than other performance pistons. A close-fitting piston rocks less, supports the ring better,
and seals the engine for maximum power. When a loose fit engine is desired, the rigid skirt design of the KB piston allows the
builder a choice without fear of piston damage. The chart shows minimum and realistic maximum loose fit clearance for KB
pistons.
Special Notice on Top Ring End Gap
The KB pistons’ unique thermal conductivity, ring location and varied end use requires special attention be paid to top ring gap.
KB pistons make more power by reflecting heat energy back into the combustion process and, as a result, the top ring runs
hotter and requires additional end clearance. Increasing ring end gap does not affect performance or oil control because normal end gaps are realized at operating temperatures. Failure to provide sufficient top ring end gap will cause a portion of the
top ring land to break as the ring ends butt and lock tight in the cylinder. The broken piece may cause further piston or engine
damage. Safe top ring end gaps can be found by multiplying the bore diameter by the appropriate ring end gap factor from the
adjoining chart. Example: 3.5” bore “Street Normally Aspirated” = 3.5” bore x .0065 = .023” top ring end gap. Note: Second ring
end gaps do not need extra clearance. As a general rule, retarding spark timing 2 to 4 degrees makes the best horsepower
when KB pistons are used. Excessive spark advance, lean
fuel mixture, or too much compression for the fuel and cam
Piston-to-Wall Clearance
Ring End
Application
used will make heat sufficient to butt piston rings with as
Gap Factor
Aluminum
Cast Iron
much as .060” ring end gap. Nitrous engines need a spark
Street Normally
retard.
.0065”
.0075-.0015
.001-.0015
Aspirated
Street
1-86
.0080”
PRESTON CYCLE PRODUCTS INC.
.0015-.0025
.002-.0025
Pushrods
S&S Pushrod Kits
S&S pushrods are engineered to help you obtain maximum horsepower through positive valve action and can be used
in any stock replacement or high performance engine application. All chrome moly steel pushrods are made of 7/16” OD
chrome moly steel tubing with pressed-in heat treated steel ends. This combination provides maximum strength and durability regardless of the performance application.
Important Note
It is recommended that an appropriate cam change be made when using solid lifter pushrods in late 1977-on engines. It is
S&S’s experience that excessive valve train noises are prevalent when a combination of solid lifter pushrods and the stock
hydraulic cam is used.
S&S Adjustable Pushrod Conversion Kit
S&S BT Evo Adjustable Pushrods
Features 7/16” O.D. chrome moly adjustable pushrods.
935076 BT 80” 1984-99
935020 As above +3/16”
935017 As above -3/16”
935018 As above -1/16”
Evo kit includes 7/16” O.D. adjustable type chrome moly
steel pushrods. These pushrods can be used in place of stock
non adjustable type with hydraulic lifters or with solid lifters in
any application.
PCPDescription
935033 XL 1986-90
935021 As above, +5/16”
935022 As above, +7/16”
935024 As above, +1.010”
935025 As above +1.100”
935022 XL 1991-03
935085 As above +5/16”
935089 As above, +7/16”
935086 As above, +.915”
935088 As above, +1.100”
Preston Adjustable BT Evo Pushrods 1984-99
Made from 7/16” diameter 4130 military specification chrome
moly tubing with 9 x 1mm adjusters. Easy installation and
removal without disassembling engine. (USA)
30060
Jims Titanium Pushrods
Pushrods are machined out of a titanium alloy that is as
strong as chrome moly but as light as aluminum. Easy to
install without disassembly of top end or removal of cam and
will work with new Jims taller cylinders. Pushrods have a 24
thread, 3/8” ball-end rocker and 3/8” ball-end tappet.
PCPApplication
31182 1991-on XL
Hydraulic Lifter Limited Travel Kit S&S
Designed to maximize the efficiency of the stock hydraulic
tappets on all Evolution engines.
335338 Fits 1984-85
335339 Fits 1986-on
PRESTON CYCLE PRODUCTS INC.
1-87
Pushrod, Multi-Fit
Preston Evolution Pushrod Kit-USA
Evolution pushrod kit comes with four adjustable pushrods
with instructions. Made of 7/16-OD aluminum tubing you may
purchase solid lifter adaptor bushings separately. Be sure to
order correct adaptors to fit proper year motor. Order by our
part numbers.
PCPDescription
4826
Adjustable pushrod set to fit all BT (17900-84)
17517 Converter bushings to fit all late 1985-on 1340,
1986-88 XL883/1100/1200 (18507-85)
12529 Locknuts 9/32-32 to fit the above kits and other p/rod adj. screws using this thread (18570-38) (4pk)
Sifton Quick Install Pushrod Set
Pushrods are designed to be installed without the removal of
rocker boxes or cylinder heads. Precision made from 4130
chrome moly tubing.
PCPApplication
30081 Evo BT 1984-99
30083 XL 1991-on
V-Thunder Pushrod Kits
Made from .049 wall 4130 chrome moly steel to exacting
tolerances for reliability. These rods fit stock or Velva Touch
Lifter units. PCP# 30046 is a 2 piece style that can be installed or removed without disassembling heads
30045 BT Evo 1984-99
30041 Stroker
30046 BT Evo with stock block 1984-99
30048 TC-88 2000-on with stock bonds
S&S Quickie Pushrods
Sifton Tapered Adjustable Pushrods
The threaded adjuster screws into the pushrod until the
threads disengage and the adjuster simply slides into the
pushrod making installation or removal a snap. Once the
pushrod is installed and adjusted the locknut prevents the adjuster from moving. The ball ends of the pushrods are drilled
so that oil can flow through the pushrod.
PCPApplication
Displacement
935120 1984-99 BT
80-98”
Manufactured from 4130 steel with hardened adjusters and
ball ends. Designed to be installed without removing gas tank,
rocker box or camshaft cover. Set of 4.
21809 Fits hydraulic or solid Evo Big Twin
1-88
PRESTON CYCLE PRODUCTS INC.
Pushrods
Jims Pro-Lite Evo Pushrods
Adjustable pushrods for Big Twins are made from aerospace
quality heat treated aluminum with steel ends. Does not require dissasembly of top end or removal of the cam. Pushrods
will replace OEM 17921-83, 17924-83, 17927-83, 17930-83
and S&S 935076. Will work with .200 taller cycle in drive.
31178 BT Evo single cam 1984-99
Andrews Products adjustable pushrods are available
for all Evolution engines. They are all stock diameter so
there is no cover tube interference.
Aluminum Evolution Pushrods BT 1984-99
Fully adjustable and made from super light aluminum. A must
for any cam change since the stock pushrods are not adjustable and therefore more difficult to reinstall.
292110 4 Aluminum pushrods and adjusters
Chrome-Moly Evolution Pushrods BT 1984-99
Fully adjustable pushrods are made from chrome-moly steel
for maximum strength. Extra rigid, high strength construction
for all out performance applications.
292140 4 Chrome-moly pushrods and adjusters
Evolution High Lift Springs (Multi-Fit)
When installed on Evo engines with titanium spring collars,
cam lifts of.550+ can easily be accomodated. Installation
does not require machining of heads.
294150 4 Inner and outer springs
Evolution Titanium Upper Spring Collars (Multi-Fit)
For use on all Evolution 80 engines. They will provide .050”
more spring travel over stock upper valve collars. These collars are stronger than stock parts, 50% lighter and install with
stock keepers.
293110 4 Titanium upper spring collars
PRESTON CYCLE PRODUCTS INC.
1-89
Pushrod Cover Kits, Multi-Fit
Complete Pushrod Cover Kits, Multi-Fit
All parts from top to bottom fit all V-Twin engines. Visible parts
are all chrome and includes upper covers, inner cover, and
lower covers.
PCPFits
34106 Big Twin Evo’s 1984-99
34107 TC-88 1999-on
34108 All Evo Sportsters 1985-89
34105 Adapts PCP #34108 to XL 1990-on
34109 Sportster 883, 1200, 1 piece design 1990-03
34110 As above, 16 piece design 1990-03
Chrome Billet Pushrod Cover Kit BT 1984-99
Pushrod cover kit includes all pieces and seals for complete
installation on BT Evo models.
30049
BT Chrome Pushrod Cover Dress-Up Kit
Kit includes chrome lifter base covers for 1984-99 Evo.
59173
S&S Pushrod Cover Kits
Billet Chrome Evo Pushrod Cover Kit
59885 1984-99 Evo models
1-90
Includes top and bottom covers, cover cap, cover spring, and
spring washer for four pushrods.
PCPApplication
934039 TC 1999-on, BT Evo 1984-99 and XL 1986-90
934038 As above, for engines 1” or more taller than stock
PRESTON CYCLE PRODUCTS INC.
Push Rod Covers, Multi-Fit
Chrome Push Rod Cover Hardware 1936-on
PCPFits
73545 XL 1986-89 clips (17950-86) (4 pack)
13101 Spring (17947-36) (10 pack)
2002 Chrome cup (17945-36) (4 pack)
13557 Spring washer (6762B) (10 pack)
Pushrod Cover Kit
Lower pushrod covers and upper clips used when installing
adjustable rushrods in Twin Cam motors. Requires the use of
OEM springs, retainers and washer.
72148
Chrome Lower Pushrod Cover Kits
Stock pushrod covers are duplicates of the OEM part.
9202 BT Evo with 8 seals 1984-99
Upper Pushrod Cover Kits
Each kit contains 4 chrome plated retaining clips, 4 chrome
plated cups, 4 springs, 4 cork gaskets, and 4 steel washers.
Exact duplicates.
Chrome Plated (Outer)
1772 BT Evo (3-5/16” clips)
9865 BT Evo with S&S lifter blocks (3” clips)
9887 Sportster 1986-90 (2-13/16” clips)
Upper, Inner Pushrod Covers
1929
9213
Quad Seal Style L1979-on
Colony BT Evo 1984-99 (Quad)
PRESTON CYCLE PRODUCTS INC.
1-91
Valve Springs Multi-Fit
S&S High Performance Valve Spring Kits
Jims Valve Spring Kits BT 1984-04
PCP
31170
31171
31172
31173
Lift Open #
.600160
.600160
.675184
.675184
OD
1.460
1.460
1.510
1.510
ID
.700
.700
.745
.745
Retainers
Chrome-moly
Titanium
Chrome-moly
Titanium
Kits fit stock style and S&S Super Stock Heads on 1984-04
BT and 1986-on XL. O.D. of outer spring fits within stock
spring compartment. Used with “no shoulder” style valve
guides and special keepers fit stock 5/16” diameter stemmed
valves and S&S collars only (these guides can be retrofitted
to early BT V2 heads equipped with “shoulder” style valve
guides). Features patented steel top collars specially drilled to
lighten and allow oil to cool springs. Includes 4 of .015” and 4
of .030” shims.
902077 Kit with steel top collars
902078 Kit with titanium top collars
Valve Keeper Keys BT and XL
Split type, sold in 8 packs, enough for one engine.
PCPDescription
30013 Evo 1983-on & Twin Cam 1999-04 (18229-83)
34585 Crane 175# spring keepers
T/L Spring Kit for all EVO and Twin Cam to 04
This kit includes steel lower collars, valve keepers, and
titanium upper collars. For cams up to .575 lift and 6500
RPM. 155# installed spring pressure.(up to 180 # with shims
supplied)
66017 18209-06
Colony Pushrod Cover Rubber Seal Kit
Fits all BT1984-on and includes 12 machined rubber seals.
9529
1-92
PRESTON CYCLE PRODUCTS INC.
Valve Springs
Valve Spring Kits (Eastern)
Includes all springs, collars and keepers necessary for each
application.
PCPModel
32018 1340 E1985-04 (18201-83, 18202-83, 18219-83)
XL 1986-on (18222-83A, 18229-83)
Stock Valve Spring Kits
Each valve spring kit is manufactured from top quality materials. Heat treated with machined ground end for a perfect fit.
Made in USA.
32005 1983-04 BT and 1986-on XL (18201-83, 18202-83)
Note: Valve guide oil seals will require machining of
valve guide and/or collar in order to re-establish overall
valve guide height on all but the latest-style valve guides.
Installation tools are available separately. Refer to service
manual and valve guide specifications for modifications
required.
Valve Shims
EVO Valve Guide Oil Seals
This will dry the combustion chamber and end smoking problems. Sold in 10 packs.
14000 Evo 883-1200 and BT 1984-on Evo
EVO Valve Guide Oil Seal Sets for one engine
4143 Sportster and Big Twin with one sleeve
Evolution 1984-04 (4 pack)
Used on all Evolution Engines 1984-on
PCPFits
13505 Evolution .015” thick (20 pack)
13506 Evolution .030” thick (20 pack)
Crane Teflon Valve Stem Seals
Are made of teflon for maximum valve stem oil control. These
seals wipe excess oil from valve stems by means of a unique
spring loaded wiper assembly. Sold as a set of 4.
Machining Required!!
34521 BT 1984-on Evo
(3/8” valve guides must be cut to .531)
(5/16” valve guides must be cut to .531)
No Machining Required
34689 BT 1984-on Evo (set) for 5/16” stem .415” guide O.D. seal O.D. .500”
PRESTON CYCLE PRODUCTS INC.
1-93
Valve Springs
Crane EVO Valve Spring Sets
For BT Evo & TC to 2004 and available
in precision wire and thermo-cool coated
retainers. Made from aluminum or titanium.
All springs have nominal inside .800 and
1.460 outside diameter and a coil bind height
of 1.080”.Note # is the symbol that denotes
pounds.
Seat Pressure &
Nominal Open
PCP
Description
Application
Installed Height
Pressure & Height
34692 Steel
Springs (155#), steel retainer (5-1102)
155# @ 1.800
352# @ 1.280
34693 Titanium
Springs (155#), titanium retainer (5-1002)
155# @ 1.800
352# @ 1.280
34694* Thermo Cool Kit
Thermo springs (155#), titanium retainers (5-1004) 155# @ 1.800
352# @ 1.280
34695 Steel
Springs (175#), steel retainers (5-1101)
175# @ 1.700
394# @ 1.180
34696 Titanium
Springs (175#), titanium retainers (5-1001)
175# @ 1.700
394# @ 1.180
34519* Thermo Cool Kit
Thermo springs (175#), titanium retainers (5-1003) 175# @ 1.700
394# @ 1.180
Note:* Kits contain valve springs, upper and lower collars and valve locks. Others are springs and collars only.
Crane Evo H-11 Tool Steel Valve Springs-EVO
Premium steel springs are heat treated for strength and
absolute reliability. Springs increase horsepower and rpm on
virtually any application. These new springs also feature:
• Installed height of 1.8”-for use with up to .650” valve lift
• 1.460” Outside diameter
• 180/185 lbs. Seat pressure @ 1.150”
• 480/485 lbs. Open pressure @ 1.150”
34572
Valve Spring Compressor Tool
Jims tool for removing or installing valves. Hardened ball
bearing style tip at valve head end eliminates damage to
valve. Can be clamped into vice and includes valve collar
receiver for safer tool use.
31471 O.H.V. BT and XL including Twin Cam and all aftermarket heads (96600-36B)
1-94
Evolution Valve Collars
61-74-80 OHV
PCPApplication
30003 Lower 1984-on 1340 Evo (18222-83)
30006 Upper 1984-on 1340 Evo (18219-83)
Sportster 883-900-1000-1100-1200
PCPApplication
30003 Lower 1986-on 883-1100 & 1200 (18222-83)
30006 Upper 1986-on 883-1100 & 1200 (18219-83)
PRESTON CYCLE PRODUCTS INC.
AV&V Valve Springs
AV&V Valve Spring Kits 1984-04 (not 7mm stems)
Premium springs are manufactured without compromise from an ultra clean, high silicon and vanadium alloy wire; the best
alloy available on the market for high lift and endurance applications. The chrome moly 4140 steel retainers are the strongest
most durable retainers offered. High grade titanium retainers add strength and reduce weight allowing the spring pressure
to operate more efficiently. This lets your motor accelerate quicker and produce more power. Springs feature a small O.D. of
1.460” so very little or no grinding is required to the inside of the rocker cover.
AV&V Selection Chart for up to .600” lift
PCP
Nominal Diam.
Inside-Outside
Retainer
Type
Application
Seat Pressure &
Initial Height
Nominal Open Pressure and Height
Coil Bind
Height
34028
0.800” - 1.460”
Steel
34029
0.800” - 1.460”
Steel
Evo, Twin Cam
155# @1.800”
352# @ 1.280”
1.080
Evo, Twin Cam
175# @ 1.760”
394# @ 1.180”
1.080
34030
0.800” - 1.460”
Titanium
Evo, Twin Cam
175# @ 1.760”
394# @ 1.180”
1.080
34031*
0.800” - 1.460”
Steel
7mm, Twin
Cam, Sportster
155# @ 1.800”
352# @ 1.280”
1.080
*Note: Smaller valve seals #34036 must be used with AV&V 7mm double spring conversion.
PCP# 34028 and #34031 are recommended for up to .560” lift
PCP# 34029 and # 34030 are recommended for up to .600” lift
AV&V Selection Chart for up to .660” lift
PCP
Nominal Diam.
Inside-Outside
Retainer
Type
Application
Seat Pressure &
Initial Height
Nominal Open Pressure and Height
Coil Bind
Height
34032
34033
0.800” - 1.460”
Steel
Evo, Twin Cam
180-185# @ 1.800”
480-485# @ 1.150”
1.080
0.800” - 1.460”
Titanium
Evo, Twin Cam
180-185# @ 1.800”
480-485# @ 1.150”
1.080
PRESTON CYCLE PRODUCTS INC.
1-95
Release Valves and Seals
AV&V Solid Carbide Valve Guide Reamers
These unique reamers feature a 2” long pilot for a perfect alignment with the valve guide while reaming and are
specially designed for use with manganese bronze material.
Valve guides can be reamed to exact dimension without any
taper in just a few seconds. These durable tools will last for
hundreds of guides. When using AV&V valves and guides this
one tool allows you to fit both intake and exhaust.
PCP
Diameter
Application
34044*
7mm +0.001”
Stock OEM valves
34045
0.3110”
Evo, Twin Cam
34046
0.3115”
Evo, Twin Cam
34047**
0.3120”
Evo, Twin Cam
*HD 7mm valves are .001” oversized, #34044 must be used to fit
AV&V bronze guides to accept OEM valves
** Recommended size for all Evo and Twin Cam AV&V valves
AV&V Compression Release Valves (Pairs)
AV&V compression valves are available as a stock replacement and in short thread styles. Short thread valves are easy
to install as you don’t need to machine the heads as deeply
as when using stock OEM style valves. All valves feature a
high temperature resistant knob that comes in a charcoal
colour to more closely match heads. 10 x 1.0mm threads.
PCP
Thread Protrusion Recommended Application
34041 ShortShortEvo models
34042 Short
Long
Twin Cam
34043 LongLongStock replacement
Fluoro-Viton Seals (5 Pack)
Seals are made from a fluoro-viton polymer with teflon added
to prevent valve to seal friction. A metal spring keeps constant
seal to valve tension to prevent oil consumption. These seals
are then bonded to a steel jacket that provides a secure fit to
the guide. The internal ribs are designed to allow for installation without any tools, but hold secure after installation.
PCP Application StemGuide
32276 V-Rod
6mm .347
32275 Evo
7mm.562
32274 Evo 5/16
.420
AV&V Viton Valve Seals (4 Pack)
Seals resist higher temperatures to offer superior sealing.
PCP
Application
Guide O.D.
I.D.
34035 V-Rod
8.5mm6mm
34037 OEM style
0.562”
7mm
34038* Evo, Twin Cam
0.420”
5/16”
34039 Evo, Twin Cam
0.530”
5/16”
* Designed for shortened valve guide length due to the limited
clearance between stock guides and upper spring coll
1-96
PRESTON CYCLE PRODUCTS INC.
Valve Guides
Rowe Unhoned Small Bore
Cast Iron Guides
Evolution with flange .300”
shorter
Int./Exh.Size
17590
STD
17591
.001
17592
.002
17593
.003
S&S Valve Guides
Rowe Valve Guides
PCPDescription
902210 STD V2 Int/Exh
902211 +.001 V2 Int/Exh
902212 +.002 V2 Int/Exh
902213 +.003 V2 Int/Exh
902219 +.030 V2 Int/Exh
Cast Iron
Model
Size
Intake Exh
Evo 1984-on STD
1767017680
BT and XL
+.001 1767117681
.5620
+.002 1767217682
+.003 1767317683
+.004 1767417684
+.005 1767517685
+.006 1767617686
+.008
Ampco 45
Intake Exh
1751017510
1751117511
1751217512
1751317513
1751417514
1752217522
1751517515
1752317523
AV&V High Performance Valve Guides for Evo
and Twin Cam Models to 2004
AV&V Valve Seats
These valve seals are made from heat and wear resistant
high quality alloy steel, and are manufactured with clear
identification markings and radius edges for easy installation.
These seats will resist intense valve pounding and effectively
dissipate heat for consistant valve sealing. These valve seats
will increase in hardness during engine break-in period.
Exhaust and intake valves are made from the same material,
choose size as needed. Machining may be required.
PCP O.D.I.D. Thickness
31787 1.630” 1.180”
.385”
31789 1.757” 1.371”
.315”
31780 1.757” 1.410”
.430”
31788 1.880” 1.439”
.410”
31784 1.944” 1.570”
.400”
31781 2.008” 1.610”
.440”
31782 2.040” 1.590”
.420”
31790 2.068” 1.750”
.315”
31783 2.070” 1.610”
.460”
31785 2.135” 1.750”
.400”
31786 2.163” 1.750”
.455”
These manganese bronze guides have a shortened seal area
and are tapered for use on high lift and high flow applications.
Use with .530” valve seals.
IntakeExhaustOversize O.D.
I.D.
3175631768 STD
.5625”
.308”
3175731769 .001”
.5635”
.308”
3175831770 .002”
.5645”
.308”
3175931771 .003”
.5655”
.308”
3176031772 .004”
.5665”
.308”
3176131773 .005”
.5675”
.308”
3176231774 .006”
.5685”
.308”
3176331775 .008”
.5705”
.308”
3176431776 .010”
.5725”
.308”
3176531777 .012”
.5745”
.308”
3176631778 .015”
.5775”
.308”
3176731779 .025”
.5875”
.308”
AV&V High Performance Valve Guides for Evo
and Twin Cam Models to 2004
These manganese bronze guides are stock length for direct
stock replacement. Use with .530” valve seals. Same guide
will fit intake or exhaust.
PCP OversizeO.D.
I.D.
31801 STD
.5625”
.308”
31802 .001”
.5635”
.308”
31803 .002”
.5645”
.308”
31804 .003”
.5655”
.308”
31805 .004”
.5665”
.308”
31806 .025”
.5875”
.308”
PRESTON CYCLE PRODUCTS INC.
1-97
Valves
Rowe Valves with Machined Heads
Jims Evo and Twin Cam Black Tulip Valves
Rowe TC/EVO Machined Valves
High flow, forged one piece valves made from 21-4N stainless
steel. Precision CNC machined with black melonite heat treating process (nitride), chromed or plain. Sold each.
Head Diam.
PCP RoweApplication + .005
32231 700-13 Intake TC/EVO black
1.844
32234 700-12 Intake TC/EVO chromed
1.844
32226 700-11 Intake TC/EVO plain
1.844
32217 700-14 Intake TC/EVO -.040 shorter 1.844
32214 714-13 Intake TC/EVO +1/16 head
1.900
-.048 shorter
32220 700-51 Intake TC/EVO +.100 head 1.944
plain stem
32262 715-13 Exhaust Twin Cam black
1.570
32215 915-13 Exhaust Twin Cam black
32232 701-13 Exhaust EVO black
1.610
32236 701-12 Exhaust EVO chromed
1.610
32228 701-11 Exhaust EVO plain
1.610
32219 701-14 Exhaust EVO-.040 shorter
1.610
Jims completes the quest for the ultimate valve train system
with the addition of these high-performance valves. Designed
to withstand extreme conditions, these valves are constructed
from a forged one piece racing grade stainless steel alloy, and
specially heat-treated and processed with nitride for superior
wear resistance. A special micropolished 45 degree angle just
below the lock groove prevents excessive stress on the valve,
and makes valve seal installation easier.
Evo and Twin Cam valves represent the latest evolution in
performance valves with their high-radius stem to valve transitions. Longer life and better flow was the emphasis in the development of these valves, and through extensive testing the
valve contouring has been optimized for both aerodynamic
and volume maximization with the longest life of a valve possible. Use on 1984-on Evo BT and 1999-on TC engines and
most aftermarket performance heads.
PCP
Type
31651 Exhaust
31652 Exhaust
31653 Exhaust
31654 Intake
31655 Intake
31656 Intake
Head
Diam. Length
1.610” 4.525”
1.570” 4.525”
1.610” 4.525”
1.900” 4.440”
1.940” 4.440”
2.020” 4.440”
Stem
Diam.
.3106”
.3106”
.3106”
.3108”
.3108”
.3108”
Profile
Dished
Dished
Flat
Dished
Dished
Dished
Crane Valves
Crane’s new friction fused performance valves are made from
a combination of the finest alloy steels. These valves offer
increased fuel/air flow, reduced expansion, improved valve
seating.
Evolution Big Twin Engines 1984-99
PCP OEM
Type Head Stem Description
34565 18074-83 Int
1.850” .3100” Chrome
34566 18082-83 Exh
1.615” .3095” Chrome
1-98
Preston’s BT Valves w/Forged Stems 1984-on
Hard Chrome
Head IntakeExhaust
STD
346732236
PRESTON CYCLE PRODUCTS INC.
Rocker Arm Kits, Multi-Fit
S&S Roller Rocker Arms for BT and XL Evo
S&S roller rocker assemblies are made for BT cams with lifts
up to .710” and XL up to .650”. These assemblies feature
aircraft grade steel, pressed-in bushings instead of needle
bearings, and 1/2” diameter rollers for strength and longetivity.
Deep pushrod tip cups promote better pushrod retention at
extreme valve angles when spring pressure and pushrod flex
are at their greatest potential.
Note: That adjustable style pushrods must be used with S&S style roller rocker arms to obtain proper valve lash adjustment.
904065 Set of 4
EVO & TC Rocker Arm Shafts
904006
31198
30300
S&S Replaces 17611-83
Jims as above
Preston as above-USA
AV&V Black Tulip and Chrome Tulip Valves
These superb valves feature the highest flow on the market.
One piece valves are forged from a racing grade stainless
steel alloy and are available in hard black or chrome finish.
Each valve has a bearing quality hardened tip at the end of
the stem to prevent premature wear with high lift applications. The Tulip Valve design also features a 45 degree angle
below the lock groove to reduce the stress in this area and to
facilitate the valve seal installation. Each valve is heat treated
with a special process and the stem is centreless grinded to a
microfinish for a longer life.
Evolution BT and Twin Cam to 2004
Head
Stem
PCP Type
Diam. LengthDiam.
31791 Exhaust 1.570” 4.525” .3106”
31792 Exhaust 1.610” 4.525” .3106”
31793 Exhaust 1.610” 4.525” .3106”
31794 Intake
1.900” 4.440” .3108”
31795 Intake
1.900” 4.440” .3108”
31796 Intake
1.940” 4.440” .3108”
31797 Intake
1.940” 4.440” .3108”
31798 Intake
2.020” 4.440” .3108”
Finish
Black
Black
Chrome
Black
Chrome
Black
Chrome
Black
Evolution Sportster 883 to 1200 Conversion
Head
Stem
PCP Type
Diam. LengthDiam. Finish
31799 Exhaust 1.480” 4.640” .3106” Black
31800 Intake
1.720” 4.560” .3106” Black
AV&V Stainless Steel Valves
These valves are heat treated and nitride processed for excellent wear resistance. These valves feature a 45 degree angle,
cut below the lock groove to reduce stress in this area, as well
as making valve seal installation easier.
Evolution BT Valves 1984-on
PCP
Valve
31662 Exhaust
31661 Intake
Head Diam.
1.615”
1.845”
Chrome Head and Spark Plug Cover 1986-99
Fits 1986-99 evolution models. Covers are held in place by
supplied rubber inserts.
59703
PRESTON CYCLE PRODUCTS INC.
1-99
BT Evo
Topline BT Evolution Cylinder Heads
USA made heads are available in plain or black wrinkle finish
and include seats and guides. Sold each.
FrontOEM
Rear OEM
Application
65202 16691-85C6520116690-85B BT 84-91, plain
65205 16691-92B 65206 16690-92B BT 92-99, plain
65207 16692-92A 65208 16696-92
BT 92-99, B/W
BT Evo Rocker Arm and Shaft Kit
Fits BT 1984-on and XL 1986-on models. Kit includes 2
(17375-83) rocker arms, 2 (17360-83) rocker arms and 4
(17611-83) shafts.
32333 Kit
30058 F/Int and R/Exh rocker arm (17360-83)
30059 R/Int and F/Exh rocker arm (17375-83)
30300 Shaft only, Preston (17611-83)
31198 As above, Jims
Jims Roller Rocker Arms
Precision, American made rocker roller arms are investment
cast from purified, aircraft quality, 4340 chrome moly steel.
Both stock and aftermarket rocker arms were analysed to determine a baseline for the design: 660 bronze bushings were
retained and a bearing grade steel roller tip was integrated
into the design. Rocker arms feature a segmented parabolic
pushrod cup that reduces friction, wear, and improves roller
tip oiling. Stock ratio of 1.625 will easily accomodate a .700”
lift cam (at the valves). Replaces 17360-83 and 17375-83.
Set of 4.
31251 BT 1984-on, XL 1986-03
Crane Bushing Tip Roller Rocker Arm
Roller tip rocker arms have a bushing fulcrum for long term
performance and reliability.These arms use the original equipment rocker arm shafts. Made from 4140 alloy steel and precision forged for greater strength, truer rocker arm ratio, and
improved rocker geometry. Features oil metering system that
fully lubricates the fulcrum and roller tip for cooler, smoother
operation. Installs easily with no machining on your original
rocker shafts. Set of4.
34564 Twin Cam 88 1999-on with stock ratio
Jims Rocker Arm Bushing (Must be Reamed)
31100 17428-57
31102 17428-83K
1-100
Stock replacement BT 66-on,
XL 57-on (8 pack)
Jims roller rocker bushings less mill slot not to be used on Shovels or Ironhead XL I.D. .555” (8 pack)
PRESTON CYCLE PRODUCTS INC.
BT Evo
BT Evo Rocker Cover Kits
Die-cast aluminum covers have smooth rounded corners and
recessed mounting screws. Kits are designed to accept stock
or aftermarket rocker arms, shafts and can be used with early
or late (umbrella) venting systems. Kits include gaskets and
hardware.
45892 BT 1984-99
Topline BT Evo Rocker Cover Components
Chromed, sold each. Each motor will require 2 of each
1992-99
PCPDescription
64241 Outer rocker cover (17528-92)
64242 Cover spacer (17529-92)
64245 Lower rocker cover (17530-92)
1984-91
64238 Outer rocker cover (17528-84A)
64239 Cover spacer (17529-84A)
64240 Lower rocker cover (17530-84B)
Preston Chrome BT Evo Rocker Cover Sets
Die cast, machined covers are polished and chromed. These
covers have a slightly changed contour than stock around
screw holes for a smoother look. Complete 6 piece set
includes all necessary gaskets and chrome allens for installation for both heads.
PCPApplication
45910 BT 1984-99
45911 BT 1992-99
Topline Gaskets U.S.A.
BT Evo
25904
25908
25924
25909
25910
Graphite head Evo .055 (16770-84D) (pr)
Rocker kit 1984-91 (17038-90)
R&L Steel 1 pce gasket (16800-84) (pr)
Rocker kit (17042-92A)
Lower rubber rocker cover (17355-84A) (5 pk)
PRESTON CYCLE PRODUCTS INC.
1-101
BT Evo
Jims Compression Release Valves
S&S Chrome Diecast Aluminum Rocker Cover
Kit
These covers fit all Evo engines. Kits include bases and covers for both cylinders, one-piece rocker shaft support units,
Viton o-rings and all hardware and gaskets required for installation. Exterior hardware is chrome plated.
904095 Evo BT and XL
These release valves make starting your engine effortless by
venting cylinder compresion with just the push of a button.
These are indispensable when used with stroker kits, high
compression engines and large displacement engines. Simply
drill and tap each cylinder head and thread in the self-sealing
release valves.
31283 Fits all BT and XL
S&S Style Chrome
Rocker Box Set 1984-99
Two piece set for two heads on
1984-99 Evo models.
59555 Rocker box set
25406 Gasket set
Chrome Head Bolt Covers
Covers fit BT 1986-99 and XL 1983-90.
44043 Grooved
44044 Smooth
Chrome Rocker Box Top Cover with D-Ring
Fits 1984-91 BT models. Gaskets are sold separately.
59049
T/L Chrome Headbolt / Spark Plug Cover
Chrome Rocker Box Bolt Covers
Fits 1984-on Evolution 1340 and XL models.
29209 43943-01
1-102
Use this chrome accessory to cover the headbolt to spark
plug area. Installs quickly without tools on 1984-99 Evolution
1340 models except those equipped with Screamin Eagle
evolution cylinder heads and 1983-03 Sportster.
64254 43835-98
PRESTON CYCLE PRODUCTS INC.
BT Evo
James Genuine Metal Cylinder Base Gasket
Gasket has a steel base metal which has been coated on
both sides with a specially formulated high temperature oil
resistant rubber compound. Silicone beading around the inner
and outer perimeter forms a seal on both sides of gasket.
Pairs.
PCPDescription
79240 BT Evo 1984-99 (16777-94)
79525 BT Evo 3-5/8” (16777-94S)
79228 XL Evo 1986-08 (16774-96)
Jans James OEM 79218 16773-85
2502179226 16774-86A
79227 16774-86AC
14538 26432-76A
79366 16779-84-X
79219 16773-85T
79506
16773-85TS
2503279249 17355-84
2503379252 17356-84
79255 17358-84
79256 17358-84-A
79270 18633-48D
79274 18634-48C
25170 63858-49
14525 11145 (10)
14521 11157 (10)
Item
Head Gasket
Cyl. Base
Coated cylinder base
Stud O-Ring
1 piece rocker w/silicone
.046 Blk head gasket (5pk)
.046 BB w/silicone bead
Lower Rocker, cork
Upper Rocker, cork
Centre Rocker, cork
Centre top rubber 87-92
Rear Tappet
Front Tappet
Washer (drain plug)
Lower Push Rod Cover
Upper Push Rod Cover
HES Head-Base Gasket Sets
Feature .040 special copper head gaskets and .007” thick
aluminum base gaskets, will not compress or torque, and
have great detonation resistance. Kits include 2 head & 2
base gaskets.
25720 1984-91 80” EVO
25721 1986-91 XL EVO 1200
EVO Big Twin Rocker Cover Gasket Kits
Silicone Rocker Box Gaskets for Evolution®
Motors 1984-91
PCP
25401
25402
25403
25404
Fits
Lower Rocker Cover (17335-84B) (pair)
Upper rocker cover (17356-84B) (pair)
Inner rocker cover (17358-84B) (pair)
Kit, 2 each of above (enough for 1 engine)
These gasket kits include both rocker to head gaskets and
your choice of Molded O-Ring or Cork cover gaskets with
bolt seals and washers for two heads for models listed.
Jans JamesType Year
79972Cork1984-91
2541379973 O-Ring1984-91
79991
As above w/steel
2541579974 O-Ring1992-99
79992
As above, w/steel
PRESTON CYCLE PRODUCTS INC.
1-103
BT Evo
James Rocker Cover Gasket Kits
PCPOEM
79972 17033-83-R
79973 17038-90
79974 17042-92
Description
1340cc 1984-91, cork
1340cc 1984-91, rubber
1340cc 1992-99, rubber
James Top End Gasket Kits Evo BT 1984-99
PCPOEM
79961 17033-83*
79980 17033-83-A
79984 17040-92
79963 17033-92
Description
1984-91 (cork and teflon)
1987-91 (rubber & Teflon)
1992-99 (.045 & rubber rockers)
Big bore 1992-99 (.045 & rubber)
James Motor Gasket Kits
PCPOEM
79982 17035-83-B
79985 17041-92-A
Description
1340cc 1984-91, rubber 4 & 5 speed
1340cc 1992-99, rubber
James Rocker Cover Gasket Kit
Includes coated steel base gaskets. Replaces 17042-92-X.
79992 Kit
1-104
James Rocker Gasket Kit with Steel BT 84-91
79991 17038-90-X
PRESTON CYCLE PRODUCTS INC.
BT Evo
Topline BT Gaskets
James Evo BT Top End Kits
Steel 1 Piece Evo Rocker Box Lower Gaskets
25924 Pairs (16800-94)
Top end only kit w/.046” by 3-5/8” head gaskets for use on
Evo BT with S&S rocker boxes.
79996
25909 17042-92A Rubber rocker box kit 1992-99
S&S Evo Rocker Cover Gasket Kits
Gasket kits for S&S rocker covers feature o-ring style seal
between upper and lower cover.
PCPDescription
904046 1984-91 stock rubber (17038-90)
904047 1992-99 stock rubber (17042-92A)
904049 S&S billet, all BT & Sportster Evo
904091 S&S billet, all BT & Sportster Evo
25908 17038-90 Rubber rocker box kit 1984-91
25910 17355-84A Rubber lower rocker 1984-91 (5 pack)
James Head Gasket 1984-99
79215 16770-84-A
79216 16770-84-B
79217 16770-86-S
79218 16773-85
79219 16773-85-T
79506 16773-85-TS
79553 16770-84-X
.046” Head gasket and coated base with 4 blue o-rings (kit)
.048” Carbon graphite head gaskets with o-rings (5 pk)
3 5/8” .064” Blue teflon head gasket & .016” cylinder gasket kit with 4 red o-rings (kit)
.064” Black teflon head gaskets (5 pk w/10 o-rings)
.046“ Black teflon head gasket with o-rings (5 pk)
.046” 3 5/8” Head gasket with silicone (5 pk)
.036” Head gasket 1984-01 (2 pk)
PRESTON CYCLE PRODUCTS INC.
1-105
BT Evo
Revolution Hard Parts
PCP OEM 1 29010 16219-79B
1A 65200 16510-83A
1B 65201 16690-85B
65202 16691-85C
2 10807 16715-83
3 79218 16773-85
4 25021 16774-86A
5/6 79366 1677-84X
5/6 79581 16779-99X
7 10816 16837-85C
9424 16837-85B
8 25032 17355-84A
9 25033 17356-84A
10 79255 17358-84A
11 29004 17360-83
12 29005 17375-83
13 18503 17428-57
14 30300 17611-83
31198
15 29006 18011-86
29013 18134-83
16 29008 18020-83
29009 18134-83
17 29000 18523-86
17A15623 --
15624 --
18 29001 18540-83B
29002 18542-83B
19 79270 18633-48C
79271 79273 18634-48C
79274 20 14538 26432-76A
21 25170 63858-49
22 18705 16573-83
Description
Year
Stabalizer link,
80-
top (not FXST)
Cylinder & piston
85-*
Rear head
85-91
Front head
85-91
Stud exhaust
85-*
Head gasket (2)
84-*
Base gasket (2)
84-*
1 pc rocker, paper 84-*
As above steel
84-*
Cylinder stud (8)
85-*
Cylinder studs, Colony85-*
Rocker gskt/lwr,cork (2)84-91
Rocker gskt/up,cork (2)84-91
Cork gskt/In (2)
84-91
Rocker arm F/I, R/E 84-*
Rocker arm R/I, F/E 84-*
Bushing rocker (8)
66-*
Rocker shafts (4)
84-*
Jims as above
Exhaust seat STD (2) 84-*
Seat .005 (2)
84-*
Intake seat STD (2) 84-*
Seat .005 (2)
84-*
Tappet roller (4)
86-*
Roller with pin (4)
86-*
Roller set
86-*
Guide block rear
84-*
Guide block front
84-*
R/Tappet gask .031 48-91
As above .020
92-99
F/Tappet gask .031
48-91
As above .020 92-99
O-Ring
84-*
Washer, screw
84-*
Steel insert
84-*
U/M
Each
Each
Each
Each
5 Pk
5 Pk
10 Pk
Pr
Pr
Each
8 Pk
10 Pk
10 Pk
10 Pk
Each
Each
4 Pk
Each
Each
Each
Each
Each
Each
Each
Each
Set
Each
Each
10 Pk
10 Pk
10 Pk
10 Pk
10 Pk
10 Pk
5 Pk
Topline Evo Complete Gasket Sets
PCPApplication
25919 1984-91 FXST, FXR, FLT (17035-83B)
25920 1992-98 FLT, 1992-94 FXR, 1992-99 FXST,
1992-98 FXD (17041-92A)
SEE THE GASKET SECTION FOR MORE GASKETS
Topline Evo Top End Gasket Kits
PCPApplication
25921 1984-91 FXST, FXR, FLT (17033-83A)
25922 1992-98 FLT, 1992-94 FXR, 1992-99 FXST,
1992-98 FXD (17040-92A)
1-106
PRESTON CYCLE PRODUCTS INC.
BT Evo Rocker
EVO Finned Rocker Cover
Die cast aluminum. Besides looking
great, these covers provide cooler oil
running temperature due to the heat
sink construction of the fins.
6840 Polished (1984-91)
6841 Chrome (1984-91)
Evo Rocker Box Screw Kit
Includes chrome allen screws and
washers with copper sealing washers.
PCPDescription
8931 Allen screw kit
20500 Sealing washer (6114) (10)
25170 Fibre washer (63858-49) (10)
Chrome “Legends” Rocker
Cover Trim
Top Motor Mount to Cylinder
Head Bracket Kit
Chrome top motor mount to cylinder
head bracket mounting kit feature companion countersunk washers and flat
head allen screws. Fits BT 1993-on and
XL 1986-on.
9967
Colony Rocker Cover Screws
These new “Legends” series chrome
covers feature black painted slots that
extend and enhance the finned appearance of the heads. Installs easily over
existing cover without requiring any
modication. Sold in pairs.
45242 BT 1984-99
Head Bolt/Spark Plug Covers
For EVO 1986-99
PCPApplication
5504 XL 883/1100 1986-on acorn
8933 As above, cap
These sets are diecast and chrome
plated to cover the head bolt and spark
plug base area. They are held in place
by a rubber grommet which fits over the
spark plug and a recess in the casting
fitting over the 12 point head bolt, for a
secure fit.
45072 Pair BT 1986-99
Evo Big Twin Lower Rocker
Cover Mounting Hardware
This kit includes all correct bolts, allen
screws and washers necessary for bolting the lower rocker cover to the cylinder
head. Complete set for two heads.
240491984-99
Chrome Head Fin Covers
Covers top three fins on the right hand
side of late model heads. Sold in pairs.
45463 BT 1984-on
Rocker Box breather Upgrade
1992-99
16326Kit
Colony Lower Rocker Box
Mounting Kit
Stock replacement hardware for mounting both lower rocker boxes on Evo Big
Twin and Sportsters.
72078
PRESTON CYCLE PRODUCTS INC.
1-107
EVO Cylinder Hardware
Evo Cylinder Head Studs
PCPFits
10816 T/L BT 1985-99 (16837-85C) (ea)
10821 As above (4 pack)
9424 Colony BT 1985-99 (16837-85A) (8 pk)
72083 Colony TC 1999-on (16834-99) (8 pk)
60104 Sifton BT 1984-99 (8 pk)
9507 Colony XL 1986-on (16832-86A) (8 pk)
Chrome Head Screw Set
Set includes 4 long and 4 short head screws. Washers sold
separately.
24000 BT Evo 1983-84 (16478-83, 16480-83)
BT Evo Head Bolts
Headbolts from Revolution feature a stock style and finish.
12614 3.17” Long (4 Pk) (16478-85A)
12615 1.68” Long (4 Pk) (16480-85A)
S&S BT Evo Cylinder Studs 1985-99
60106 8 Pack
312321Each
BT Evo Inserts
10052 8 piece kit
Headbolt Covers for Evo and Twin Cam
Chrome hex dome headbolt covers hide 12 point headbolts
on all late 1985-on FL, FX, XL. Installs with set screw.
72024 Custom hex dome style
72232 Smooth style
72262 Pike style
Rocker Cover Screw Kit
Chrome plated 12 point screw, washers, and gaskets mount
rocker covers on 1985-on FL,FX and 1986-on XL.
72280
1-108
PRESTON CYCLE PRODUCTS INC.
BT Evo Rocker
Custom Evo Rocker Cover Screw Kit
“Tru-Seal” EV Rocker Box Cover Collar and
Screw Kit
Kit includes 8 screws and sealing washers with built-in o-rings
for a positive seal.
24557 Stainless steel
24558 Chrome
Chrome kits include flat head allen screws, low profile, companion countersunk washers and gaskets to mount rocker
covers on FL-FX 1985-99 and XL 1986-on.
9833
Headbolt Kits Evo and Twin Cam- 8 Pack
Colony Rocker Cover Screw Kit
Chrome plated 12 point dome top headbolts.
72011 BT 1985-91, XL 1986-92 (16480-85A, 16478-85A)
72012 BT 1992-on, XL 1993-on (16480-92, 16478-85A)
Fits FX, FL 1985-on.
9788
Evo Headbolt Washers
Stock replacement washers for BT L85-91 and XL 1984-91.
72017 Chrome (16482-85)
72018 Cad
Sifton Evo Cylinder Drain Inner Filter
Use this filter to return top end oil. Features a stainless steel
screen and a ceramic magnet that will stop ferrous debris
from valve train wear and is effective at stopping broken valve
spring material from entering engine oiling system through
cylinder drain. The thin wall steel dowel protects the magnet
and provides proper head to cylinder alignment.
17509
Head Bolt Covers
Fit over 12 point head bolts on 1986-up Evo 883-1100-1200
Sportster and 1985-up 1340 BT Evolution. Evo styles include
4 pieces for left side only.
PCP FinishStyle Model
Year
9000
ChromeAcorn Evo
1986-91
9001
Gold AcornEvo
1986-91
9002
ChromeCap
Evo
1986-91
45035 Chrome Dome
1340 & XL Evo 1986-on
PRESTON CYCLE PRODUCTS INC.
1-109
XL Evo 1986-On
SPORTSTER EVOLUTION ENGINE CAMS
XL Cam Installation Notes:
Stock HD XL cams are colour coded for gear pitch size and
custom fitted to individual engines for minimum gear tooth
backlash. The HD service manual describes a detailed,
involved procedure for checking cam gear backlash. The idea
is to fit the 4 cam gears (and drive gear) with as little gear
backlash as possible in order to reduce gear noise during
operation.
Excessive cam gear backlash can cause clicking at idle or low
RPM which may sound like lifters not properly adjusted. The
noise is not damaging to the engine but may be esthetically
objectionable. Cam gears which have NO backlash (oversized gear teeth) will whine in operation and may cause localized gear tooth heating and damage. All Andrews Products
EV XL cam gears are cut to specifications in middle of the
size range. Resulting parts are designed to run in any EV XL
engine with no problems due to tight running cam gear teeth.
However, there may be rare instances (in a specific engine)
of gear clicking noise at low RPM that we cannot completely
eliminate. It may be necessary to tolerate the noise.
Andrews Products has a number of performance cam designs
for EV Sportster engines. All of the cams listed below will
run to 6500 RPM with stock hydraulic lifters. Since the stock
lifters are such proven units, we continue to recommend that
they not be changed to solids. Andrews Products EV Sportster cams have stock base circle sizes so stock (non-adjustable) pushrods can be used (except V9 or BV). Adjustable
aluminum or chrome-moly-steel pushrods are also available.
Note: the #2 cam drive gear used in 2000-on model year EV
Sportster cams uses 46 teeth; the 1991-99 #2 cam gear has
36 teeth.
Note: 1991-on Sportster engines are considerably different
than earlier EV Sportsters. Cam gears for earlier EV Sportsters will not fit 1991-on engines.
Touring and High Performance Cams
DurationMax Lift
PCP# Year
Grind Timing(*).053 .020
Lift
TDC Application
Stock 88-91 D
02/41
223 270
.458
.094 Listed for comparison
D
41/02
223 270
.458
.094 (Note: 1985-87 exhaust cam lift is .414)
298120 86-90 V2
22/38
240 290
.465
.180 Bolt-in cam for stock 883, 1100 or 1200 engines.
298125 91-99 N2
46/18
244 290
.440
.155 More duration and lift means extra power thru RPM
298130 00-on** N2
range. Stock springs and hydraulic lifters recom
mended. 2000-6000 RPM.
298140 86-90 V4
30/46
256 296
.490
.216 Street/drags: Stock or modified 883/1100/1200.
298145 91-99 N4
52/24
256 296
.490
.189 Slightly higher idle speed but stock springs-hydraulic 298150 00-on** N4
lifters recommended. RPM range 2500-6500.
298180 86-90 V8
32/44
256 296
.490
.226 Modified 1100-1200, stroked 883’s with stock
298185 91-99 N8
56/28
264 302
.500
.212 springs and hydraulic lifters. Great mid-range power:
298190
00-on**
N8
2000-6000 RPM.
298160 86-90 V6
34/50
264 302
.500
.241 Modified 1200s to 80 inches and or high comp.
298165 91-99 N6
56/28
264 302
.500
.212 pistons. Same intake as N8 but more exhaust 298170 00-on** N6
duration. Stock springs and hydraulic lifters recom-
mended. RPM range: 2500-6500.
214210 86-90 V9
33/53
266 309
.555
.240 Med. lift cams for stroked engines from 80-88 inches.
214215 91-99 N9
53/33
266 309
.555
.240 Broad torque range to 6000 RPM with hydraulics. 214219 00-on** N9
Andrews springs, collars and pushrods required. (1991-on need long pushrods)
214265 86-90 BV
35/59
274 316
.590
.260 Hi-lift cams for 88+ inches. Andrews pushrods,
214268 91-99 NV
59/35
274 316
.590
.260 springs and collars required. BV cams start easy and 214272 00-on** NV
run strong; 2000-6000+ RPM with hydraulic lifters. (1991-on need long pushrods)
(*) Timing listed for .053 lift figures
** Model year 2000-on Sportster engines require a different #2 drive gear than 1991-99 engines
1-110
PRESTON CYCLE PRODUCTS INC.
XL Evo 1986-On
PCP OEM Description
1 11521 6508
Flywheel washer
29023 6508
USA, as above
1A 18706 8881
Bearing race
1B 13600 9142-9149 Shim asst. 100-.114
2 11043 11177A
Retaining ring
3 10301 11218
Key, crank pin
5 18705 16573-83 Insert/cyl. stud (2)
6 25000 16664-86 Head gasket XL883
25001 16665-86 Head gasket XL1100
79218 16773-85 Head gasket XL1200
7 10807 16715-83 Stud, exh. port (4)
8 25021 16774-86A Gasket cyl. base
9 10915 16832-86B Stud (8) cyl. base
9507 16832-86B Stud for cylinder
10 29006 18011-86 Exh. seat XL 1100
29012 18011-87 Exh. seat XL “-1200
29014 18012-87 Exh. seat XL 883
29008 18020-83 In. seat XL 1100
29015 18020-87 In. seat 1100-1200
29017 18021-87 In. seat XL 883
11 11051 22589-83 Retain/ring piston
12 32352 22719-85 Piston pin 883
32356 22765-88 Piston pin 1200 13 12530 23901-81 Nut, crank pin (2)
14 3412 23960-80A Crank pin STD
15 29804 24275-86A Connecting Rods
16 18504 24331-36 Bush/piston pin STD
18599 24332-36 Bush/piston pin .010
17 1102 24341-52A Steel rod races
24352-52A
18 15810 24354-87A Rod bearing set
19 10720 24362-54A Alloy rod cages
24365-54A
19A15880 24647-87 2nd largest
bear/pinion/blue
15881 24650-87 Largest “ red
15882 24659-87 2nd smallest wh/gry
15883 24660-87 Smallest “ green
20 18703 24658-86 Bearing race M/S
18704 24658-87 Bearing race
21 14538 26432-76A ‘O‘ Rings, stud
21A14042 35151-74 Sprocket seal
22 12568 40387-70 Nut, engine shaft
XL Cam Bushing Kit
Year
87-*
87-*
87-*
86-*
87-*
86-*
86-*
86-08
86-87
88-08
86-*
86-*
86-*
86-*
86
87-*
86-*
86
87-*
86-*
86-*
86-98
88-*
86-*
86-*
86-03
86-*
86-*
57-*
U/M
Pair
Each
Each
8 Pk
10 Pk
10 Pk
5 Pk
10 Pk
Pair
5 Pk
5 Pk
10 Pk
Each
8Pk
Each
Each
Each
Each
Each
Each
10 Pk
Each
Each
Pair
Each
Set
Pair
Pair
Set
L86-*
Set
57-E86 Set
87-*
Each
87-*
87-*
87-*
86
87-*
86-*
74-99
70-88
Each
Each
Each
Each
Each
10 Pk
5 Pk
Each
Genuine Torrington Bearing Set XLS 1952-90
15407 1986-90
15632 4 Piece set
Sportster Oversized Valve Seats
Machining required.
PCP ApplicationValve O.D. I.D. Thickness
31787 883-1200cc Exhaust 1.630” 1.180” .385”
31788 883-1200cc Intake 1.880” 1.439” .410”
PRESTON CYCLE PRODUCTS INC.
1-111
XL Evo 1986-On
XL Oil Pump Gear Shaft
These USA made oil pumps come complete with all gears as
shown and fit models listed. (natural finish)
30146 1975-90 (26488-75)
30147 1991-97 (26488-91)
30148 1998-06 (26488-98)
Sportster Oil Pump Assembly
These USA made oil pumps come complete with all gears as
shown and fit models listed. (natural finish)
29051 1986-90 (26204-86)
29052 1991-on (not for XR1200) (26204-91)
T/L Chrome Headbolt / Spark Plug Cover
Use this chrome accessory to cover the headbolt to spark
plug area. Installs quickly without tools on 1984-99 Evolution 1340 and Sportster models except those equipped with
Screamin Eagle evolution cylinder heads.
64254 43835-98
Colony Motor Case Kit
Hardware has stock zinc finish and fits XL 1977-90.
9879
Hastings Moly Piston Rings (2M6199) XL
1100cc
Sifton Evo XL Piston Oil Supply Squirter
Reduces cylinder temperature and engine damage by cooling
pistons with extra oil supply. Increases horsepower by reducing friction between piston and cylinder wall. Note: Engine
must be unassembled for installation.
73601 1986-99 Front or Rear
73602 2000-on Rear
73603 2000-on Front
Fits Sportster EVO 1100cc 1986-87. For 3.350 DIA. pistons.
Sold 1 set for 1 engine.
PCPSize
35226 STD
35227 .005
35228 .010
35229 .020
35230 .030
35231 .040
XL Timing Plugs
Functional and custom design plug fits all models Harley
Sportster timing plug holes and oil tanks with 5/18-18 drain
hole.
Hex Allen Finish
35919402Chrome
-
9960 Chrome (Oversize)
52829403Cad
5283
-
Black oxide
1-112
PRESTON CYCLE PRODUCTS INC.
XL Evo 1986-On
Sportster Cam Bushings (each)(3 used)
31369
18519
31370
18557
31371
31372
Jims XL 1954-on STD (25586-37)
Preston as above
Jims XL 1954-on .005 (25586-37 +005)
Preston as above
Jims R/Int. XL 1957-90 (25588-57)
Jims R/Int. XL 1957-90 +.005
Pinion Bushing
PCPDescription
31376 XL 1977-on STD (25593-74) Jims
18527 As above, Preston
Rear Intake Cam Bushing XL 1991-on
Top Motor Mount to Cylinder Head Bracket
31373 Sold each (25588-91) (Jims)
18603 As above Eastern
18604 As above +.005 (Jims)
Chrome top motor mount to cylinder head bracket mounting
kit feature companion countersunk washers and flat head allen screws. Fits BT 1993-on and XL 1986-on.
9967
S&S Pinion Shaft Assemblies XL 1986-on
332325
332336
Std size requires 1987-on main bearing. Fits S&S D or DR flywheels only.
+.001 oversize requires 1987-on main bearing. Fits as above.
Colony Stock Acorn Lifter Base Screw Kit
PCPApplication
5503 XL 883/1100 1986-90
9765 XL 1991-94
9766 XL 1995-on
Colony Motor Mount Kit
PCPApplication
5506 Lower XL 883/1100 1986-on chrome acorn
5507 Upper XL 883/1100 1986-on chrome acorn
9774 XL 1991-on chrome allen
PRESTON CYCLE PRODUCTS INC.
1-113
XL Evo 1986-On
Topline Chrome Cam Cover Trim 1996-03
This chrome plated cover fits over top of stock polished cover
and includes mounting hardware.
64237 25216-98
Custom Dress-Up Kit
Fits right side of XL models 1983-on. Includes chrome steel
cam cover trim, chrome diecast sprocket cover, chrome master cylinder reinforcement bracket and hardware.
45808 Chain XL 1983-90
45809 Belt and chain XL 1991-03
45821 Belt, electric type 2004-on
Chrome Cam Cover
These form fitting Chrome steel covers fit over stock cam
cases on 1971-on Sportster models.
No need to remove cam case or disturb cams or gears. Covers held in place by existing screws.
45045 1983-90 Sportster
45102 1991-03 XLH
45846 2004-on
Colony Stock Cam Cover Screw Kit
PCP
5501
9751
1-114
Application
XL 883/1100 1986-on
XL 1986-03
Style Chrome acorn
Chrome allen knurled
PRESTON CYCLE PRODUCTS INC.
XL Evo 1986-On
T/L Sportster Chrome Tappet Cover
Use the polished stainless steel fasteners included to quickly
and easily install the chrome cover over the stock cast aluminum tappets. Fits 1991-03 Sportster models except those
using gearcase trim cover #25216-98.
64252 32716-98
XL Custom Dress-Up Kit
Kits for XL 1983-on models fit right side and includes chrome
steel cam cover trim, sprocket cover, master cylinder reinforcement bracket, and hardware.
PCPYear Drive
Type
45808 1983-90 Chain
Electric
45809 1991-03 Belt or chain Electric
XL Tappet Block Cover
Chromed diecast cover fits
from the pushrod tube base to
the cam cover.
PCPYears
45362 1991-03
453731991-03
XL Chrome Cylinder Base Cover
Chrome Right Side Cam Cover/ Sprocket
Cover Set 1991-on
Provides a smooth, chrome cover for the area below the cylinder base on left side of engine.
PCPYears
45364 2004-on (32729-07)
Covers include gaskets and chrome allen screws for assembly.
90420 1991-03
904212004-on
T/L Sportster Cylinder Base Cover
This cover quickly installs on the left side of a 1991-03 Sportster.
64253 32732-98
PRESTON CYCLE PRODUCTS INC.
1-115
XL Evo 1986-On
1200cc XL Conversion Cylinder & Piston Set
Set includes 2 silver finished cylinders or black wrinkle with
milled edge fin cylinders. Fitted Wiseco 10:1 piston and ring
set with base and head gasket included. Order James Rocker
Box Gasket Set separately. Will fit 883 and 1100cc models.
1986-03
53079 Silver finish
53080 Black finish
2004-on
53098 Silver finish
53099 Black finish
1200cc XL Conversion Cylinder and Piston Set
Set includes 2 silver finished cylinders or black wrinkle with
milled edge fin cylinders. Fitted Wiseco or Sifton moly 9.5:1
reverse dome piston and ring set with base and head gasket
included. Order James Rocker Box Gasket Set separately.
Will fit 883 and 1100cc models 1986-03.
53070 Wiseco (silver)
53094 Sifton moly (silver)
79989 1986-90 Top rocker box gasket kit w/steel base
79990 1991-03 Top rocker box gasket kit w/steel base
79977 1991-03 Top rocker box gasket set w/rubber base
3-1/2 Bore Piston Kit XL 883 to 1200 1986-90
3-1/2” Bore Piston Kits is an easy and economical way of
increasing the displacement and performance of the Evolution Sportster engine. By simply boring out the stock cylinders
and refitting them with a set of our special pistons, a 1202
cc engine can be made. This is a gain of 319cc over stock
for an 883 or 102 ccs for an 1100. Kit includes 2 pistons with
rings, wrist pins and wrist pin locks and gaskets. Fits 1986-87
XL1100 and 1986-88 XL 883. Important: XL 883 models REQUIRE EXTENSIVE HEAD WORK.
PCPItem
6649 Complete top end kit
25618 Gasket update kit for 1990-03 XL
1-116
S&S Evo Stock Replacement Cylinder Sets
Stock replacement cylinders are offered in a natural aluminum
finish. The bore is slightly undersized so standard piston can
be fitted with minimal honing. Additional fin surface improves
heat dissipation. Made with stock oil return passages for a
simple stock-like installation.
913010 Stock length (4.650”) Sportster
PRESTON CYCLE PRODUCTS INC.
XL Evo 1986-On
Wiseco XL 883 to 1200 Piston Kit 1986-09
This kit offers 8.5:1 compression and 3.812” stroke with no
cylinder head modification required. Top ring is .062”, 2nd
ring is .062” and oil ring is .158”. Fits Evo 883 XL overbore to
1200cc (73 cu. in.). Kit includes forged reverse dome pistons,
rings, circlips and chrome wrist pins. Skirt coated pistons
have a dome volume of -13.7cc. Order gaskets seperately.
PCP
CC Displ.
Bore
35845
1200cc
STD (3.498”)
35846
.010 (3.508”)
35847
.020 (3.518”)
Stroke
3.812”
Topline Forged 1200 Conversion Piston Kit
High compression piston kit for converting XL Evo 883 to
1200cc. Forged pistons have a dished design for use with
stock 883 heads to increase compression ratio to 10:1. Kit
includes pistons, rings, pins, circlips. Cylinders and gaskets
must be purchased separately. For race applications only. Fits
all 1986-03 XL 883 models with stock heads.
65249 STD
65250 .005
65251 .010
Valve pocket dimensions are measured from deck height:
Intake/Exhaust Pocket: Depth: -215”
Diameter: 2.100”
Topline XL Evo 1200CC Piston Kit
Aluminum alloy piston kit that allows conversion of XL 883
1986-03 and XL 1100 1986-87 to a full 1200cc. Note that if
stock heads are used a template kit OEM #25629-88 will be
required.
65245 16140-87
Topline EVO XL 1200cc Cylinders 1986-03
Use two of these cylinders to convert an 883cc or 1100cc
to a 1200cc race application. No cylinder head machining is
required when using with Sreamin’ Eagle cylinder heads, or
883/1200 converion piston kit. The only adjustment needed
is to relieve the combustion chamber for proper combustion
ratio. Cylinders are sold each and 2 are required to complete
the conversion. Fits XL 883/1100 when used with XL 1200
pistons or our piston kit #65245.
PCPFinish
65523 Silver (16554-92A)
65524 Black (16871-99Y)
XL Evo Cylinders 1986-on
Cylinder Base Stud Set
Alloy steel studs are heat treated with interference threads.
9507 XL Evo 1986-on (16832-86A) (8 pack)
Sold each and are not hone for final fit. Cylinders are sold
without pistons except PCP 65211 and 65213 which include
piston, rings and wrist pin. All other items cylinders only.
PCP ApplicationFinish
65211 883 1986-99 Cylinder kit, raw (16446-86B)
34813 883 1986-99 Silver, (16446-86B)
65213 1200 1988-03 Blk/wrinkle cylinder kit (16447-88A)
34819 1200 1988-03 Black wrinkle
34816 1200 1988-03 Silver
34814 1200 1988-03 Silver (16447-88)
34817 1200 2004-on Silver
34818 1200 2004-on Black wrinkle
PRESTON CYCLE PRODUCTS INC.
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XL Evo 1986-On
S&S Adjustable Pushrod Conversion Kit
Andrews XL Adjustable Length Pushrods
PCPDescription
292020
4 aluminum pushrods 1986-90
292090
4 chrome-moly steel rods 1986-90
292030
4 aluminum pushrods 1991-03
292085
4 chrome-moly steel rods 1991-03
Evolution kit includes 7/16” O.D. adjustable type chrome moly
steel pushrods. These pushrods can be used in place of stock
non adjustable type with hydraulic lifters or with solid lifters in
any application.
PCPApplication
935033 XL 1986-90
935021 As above + 5/16”
935022 As above + 7/16”
935024 As above + 1.010”
935025 As above + 1.100”
935022 XL 1991-03
935085 As above + 5/16”
935089 As above + 7/16”
935086 As above +.915”
935088 As above + 1.100”
Andrews Fixed Length Pushrods 1991-on
292025 Aluminum pushrods (set of 4) 1991-on
292095 Chrome-moly steel pushrods (set of 4) 1991-on
Note: All 1991-on EV Sportster engines require non-adjustable pushrods.
Sifton Quick Install XL Pushrod Set
Pushrods are designed to be installed without the removal of
rocker boxes or cylinder heads. Precision made from 4130
chrome moly tubing.
30083 XL 1991-03
Sifton Hydraulic Tappet Kit
Includes roller tappets and adjustable pushrod set.
PCPYear
30159 1986-90
30160 1991-99
30161 2000-on
Valve Travel Checker
The Trock EV valve checker is the easiest to use, most accurate tool available for measuring valve travel on all Evolution
heads, (Sportster or EV 80). If you set up more than two pair
of heads per year, this tool is worth owning. If valve guides
or springs don’t have proper clearance, a valve checker will
pinpoint the problem quickly.
230090 Evolution valve checker
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PRESTON CYCLE PRODUCTS INC.
XL EVO 1986-On
Pushrod Cover Kit
Complete kit includes upper, lower and inner pushrod covers
to convert your 2004-on Sportster to early style removable
pushrod covers.
72253
XL Chrome Pushrod Cover Kit
Includes all pieces and seals.
34110 XL 1991-03
Colony Pushrod Cover Adaptor Kit
Adapts 1990-on Sportster lifter base to use the early style removable pushrod covers. Complete kit includes upper, lower,
inner and adaptors.
72140
XL Billet Pushrod Cover and Mount Base Kit
Allows adjustable covers to be used on 1991-03 Sportster.
59479
Pushrod Cover Conversion Kit
Complete kit includes upper, lower and inner pushrod covers
to convert your 1991-2003 XL to the early style removable
pushrod covers. Use PCP# 72254 adapter kit.
72255
XL Collapsable Pushrod Cover Set
Allow for ease of pushrod change or adjustment.
21836 2004-on
PRESTON CYCLE PRODUCTS INC.
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XL Evo 1986-On
Sportster Upper Pushrod Cover Kits 1986-90
Each kit contains 4 chrome plated retaining clips, 4 chrome
plated cups, 4 springs, 4 cork gaskets and 4 steel washers.
9887 With chrome plated outers (2-13/16 clips)
Complete Pushrod Cover Kit
S&S Pushrod Cover Adaptor Set
All parts from top to bottom fit all V-Twin engines. Visible
parts are all chrome and each kit includes upper covers, inner
cover and lower covers.
PCPApplication
34108 All Evo XL 1985-89
34105 Adapts PCP# 34108 to XL 1990-03
34109 XL 1200, 1 piece design 1990-03
34110 As above, 16 piece design 1990-03
Fits 1990-on.
335360
Pushrod Cover Conversion Adaptor Kit
These adaptors eliminate the need to remove the cylinder
heads to access the pushrods by allowing installation of the
early style removable pushrod covers and easy installation
of adjustable pushrods. Fits 1991-2003 Sportster. Use with
Colony’s complete pushrod cover kit PCP# 72255 .
72254
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PRESTON CYCLE PRODUCTS INC.
XL Evo 1986-On
Rowe Machined Sportster EVO Valves
High Lift Evolution Springs
Used with titanium spring collars, cam lifts of .550+ can easily
be accomodated. Installation does not require machining of
heads.
294150 (4 inner and 4 outer springs)
Titanium Upper Spring Collars
Will fit all EVO XL engines. They are stronger than stock,
+.050” more spring travel, 50% lighter and install with stock
keepers.
293110 (4 titanium upper spring collars)
High flow, forged one piece valves made from 21-4N stainless
steel. Precision CNC machined with black melonite heat treating process (nitride) or machined chrome. Sold each.
Evo 883 1986-2003
Head Diam.
PCP
32243
32245
32257
32258
32244*
32246*
RoweApplication + .005
710-13 Intake black
1.585
711-13 Exhaust black 1.350
710-12 Intake chromed
1.585
711-12 Exhaust chromed
1.350
710-23 Intake 883-1200 conversion
1.715
711-23 Exhaust, as above
1.480
*Note: Conversion valves for 1986-03 have .130 larger heads
and .017 shorter stems
Crane Teflon Valve Stem Seals (4 pack)
Are made of teflon for maximum valve stem oil control. Machining Required!!
34521 BT 1984-on EVO and XL
(3/8” valve guides must be cut to .531)
(5/16” valve guides must be cut to .531)
No Machining Required
34689 BT 1984-on EVO (Set) for 5/16” stem
.415” guide O.D. seal O.D. .500”
EVO 883 2004-on (7mm)
32265 712-13 Intake black
32266 713-13 Exhaust black
1.585
1.350
EVO 1200 1987-2003
32260 702-13 Intake black
32261 703-13 Exhaust black
32263 702-12 Intake black
32264 703-12 Exhaust chromed
1.715
1.478
1.715
1.478
EVO 1200 2004-*
32267 704-13 Intake black
32268 705-13 Exhaust black
1.585
1.350
Standard Valves-Forged
Model
Sportster 1986-on 883CC
IntakeExhaust
3219732198
(18031-86)(18030-86)
BT Evo-TC-XL Guides, Valve Springs/Seals/Collars are
the same and can be found in Evo area of the section
Jims Evo XL 883 to 1200 Conversion Black
Tulip Valves
PCP
Type
31658 Exhaust
31659 Intake
Head
Diam. Length
1.480” 4.640”
1.720” 4.560”
PRESTON CYCLE PRODUCTS INC.
Stem
Diam. Profile
.3106” Dished
.3108” Dished
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XL Evo 1986-On
Sportster Chrome Rocker Cover Kits
Topline Chrome Sportster Rocker Covers
PCPDescription
64234 Inner rocker cover XLH 86-06 (17537-96C)
64235 Cover spacer XLH 91-03 (17538-96)
64236 Outer rocker cover XLH 1986-03 (17551-96)
Die-cast aluminum covers include gaskets and hardware.
45894 1986-90 2 heads
45895 1991-03 1 head
45896 1991-03 2 heads
45903 2004-06 2 heads
Colony Rocker Cover Screw Kit
PCPApplication
5504 XL 883/1100 1986-on
8933 As above
Style
Acorn
Cap
Chrome XL EVO Rocker Cover Parts
Tops include allen screws and gaskets.
PCPApplication
45900 Top set 1986-03 (17501-86)
45898 Top cover & D-Ring kit 1986-90
45899 As above 1991-03
45902 Top covers only 2004-on (17551-04)
45904 Top cover & D-Ring kit 2004-on
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XL Chrome Rocker Box Cover Set
Covers fit over rocker box assembly without disassembly of
engine. Includes chrome allen screws.
45708 1986-07
PRESTON CYCLE PRODUCTS INC.
XL 1986-on
XL Chrome Finned Headbolt Bridge ‘04
This finned bridge fills the gap in your cylinder fins that occurs
at the headbolt and spark plug area. This bridge covers both
the headbolts and the spark plug with fins and has a stylish,
round bar and shield emblem. Finned bridges are sold in pairs
and include all necessary mounting hardware.
61094 Black (44296-04)
T/L XL Chrome Outer Rocker Cover 2004
64282 17551-04
T/L Chrome XL Lifter Covers 2004-07
High lustre polished chrome covers fit XL models.
61099 17994-04
S&S Chrome Aluminum Rocker Cover Kits
These diecast covers fit all Twin Cam and Evo engines.
Kits include bases and covers for both cylinders, one-piece
rocker shaft support units, Viton o-rings and all hardware and
gaskets required for installation. Exterior hardware is chrome
plated. Please note that cylinder heads must be correctly set
up for high-lift cams. It remains the builder’s responsibility to
check all operating clearances.
904095 Evo BT and XL
T/L Swingback Chrome Covers XL 2004-on
These modern stylish covers feature a curved design that
gives the impression of motion. Each cover features an embedded contrasting black label and a lustrous chrome finish.
Purchase the entire collection for a thoroughly put together
look.
PCPApplication
61096 Air cleaner cover, for models equipped w/Screamin Eagle (OEM# 29042-04A) high flow kit (29792-04)
PRESTON CYCLE PRODUCTS INC.
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XL EVO 1986-On
Chrome Polished Allen Motor Show Bike Kits
Complete motor kit includes everything needed to
mount the following: rocker box, primary cover, lifter
base, transmission covers, oil pump, air cleaner, cam
cover, point cover, timing plug, motor mounts (early XL
motor mounts include spacers). Sportster kits also include fasteners for sprocket cover, rear master cylinder
and generator. Button head allens and flat head allens
are used where necessary.
7934 Sportster 1994-03
7933 Sportster 1991-93
7932 Sportster 1986-90
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Chrome Snap Caps Bolt Cap Cover Kits
These bolt cover kits make any bike look great and are also
great for custom builders. Beatifully designed and chromed,
these caps easily install over the raw OE bolt heads on
engine, transmission, primary and more. Each kit includes
individually marked pieces that make identification and installation a breeze.
Model
XL
Year
PCP
Kit Qty.
2004-on
21914
77
1984-03
21915
74
2004-on Engine
21916
63
PRESTON CYCLE PRODUCTS INC.
XL EVO 1986-On Gaskets
James Top End Gasket Kits-Evo
PCPOEM
7997817032-86-B
79979 17032-91
Description
XL 1200 1986-90 1200 (w/steel base)
XL 1200cc 1991-03 w/.045 h/gasket and metal rocker base
James Motor Gasket Kits-Evo
PCPOEM
Description
79929* 17026-86
XL 1986-90 w/metal base & rocker
79911* 17026-91
XL 883cc 1991-03 w/rubber
79912 17026-91-MLS XL 883/1200cc 1991-03 w/MLS head gasket, .020 RCM base and RCM rocker base
*Motor and transmission gasket and seal kit
James Rocker Cover Gasket Kits
PCPOEM
79971 17030-89
79989 17030-89-X
79977 17030-91
79990 17030-91-X
Description
1986-90 w/rubber & paper rocker base
1986-90 w/steel rocker base
1991-03 w/rubber & paper base
1991-03 w/rubber & steel base V-Twin Rocker Box Gasket Kits
These gasket kits include both rocker to head gaskets and
your choice of Molded O-Ring or Cork cover gaskets with
bolt seals and washers for two heads for models listed.
PCP
Type
Year
Model
25412 Cork
1986-89 883 XL
25414 O-Ring 1991-03 883-1200 XL
James Oil Pump Gasket and Seal Kits
79814 1977-90
79928 1991-on
James XL Oil Pump Kits
Oil Pump Gasket XL
1989-on
PCP Year EngineDescription
79928 1991-on 883cc
Oil pump gasket and seal kit
1200cc
25244 26495-89 (10 pack)
PRESTON CYCLE PRODUCTS INC.
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XL Evo 1986-On
T/L XL Complete Gasket Sets
PCPApplication
66127 1986-90 (17026-86A)
66128 1991-03 (17026-91C)
66129 2004-on (17027-04)
Top End Kits
66133 1986-90 (17032-86B)
66134 1991-03 (17032-91)
66135 2004-on (17049-04)
James XL Cam Cover Gaskets
PCP Year EngineDescription
79564 2000-09 883cc
Paper cam gear cover gasket 1200cc w/silicone (5 pk)
Athena Gasket XL 1991-03
For Sportster 1200 models 1991-03.
25301 17026-91A
Quick Change Cam Gear Gasket and Seal Kit
Fits XL and Evo motors. Includes both cork and quad seals
for pushrods to fit all year range.
PCPApplication
25615 1986-90
25616 1991-03
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PRESTON CYCLE PRODUCTS INC.