Dyna Big Shots Staggered Exhaust System
Dyna Big Shots Staggered
Exhaust System
E IN T
D
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Part #17911
S A
Congratulations, you have purchased the finest exhaust system available for your motorcycle.
Your VANCE & HINES exhaust system is designed and crafted for maximum performance, a perfect fit,
a great sound and unbeatable style! Please follow the installation instructions below and if you have
any questions, feel free to call our technical help line (562) 926-5291.
Attention Installer: (if other than owner): Please forward this instruction sheet to the purchaser of this
product. These instructions contain valuable information necessary to the end user.
STOCK EXHAUST SYSTEM REMOVAL
1. Loosen heat shield clamps on both the front and rear head pipes.
2. If equipped, loosen crossover pipe clamp, located between front and rear head pipes.
3. Remove two cylinder exhaust port flange nuts from each head pipe, located at the cylinder head.
4 Remove both front and rear head pipe clamp bolts.
5. Remove the bolts that attach mufflers to the frame.
6. Remove the complete exhaust system and set aside. Assistance may be required.
7. Remove rear head pipe clamp bracket from transmission cover. Save the bolts as one of them will
be reused.
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D390IN Rev. 1.3
8. Remove bolt below left side of the transmission cover.
Position mounting bracket 338 over mounting location to
determine which bolt will be removed. (Figure 1).
9. Carefully remove the cylinder exhaust port flanges and
circlips from the stock exhaust system using snapring
pliers. NOTE: Replace bent or damaged circlips. Check
exhaust port gasket condition. (Recommended
replacement exhaust port gaskets, Screamin’ Eagle part
number:17048-98.)
TRANSMISSION COVER
INSTALL 1/4"-20 X 1"
ALLEN BOLT (SUPPLIED)
USE STOCK 5/16" - 18 X 1"
HEX BOLT
BRACKET 338
REMOVE ALLEN BOLT
PRIOR TO INSTALLING
MOUNTING BRACKET
Figure 1
USE 5/16" - 18 X 1-1/2" HEX BOLTS
AND WASHERS (SUPPLIED)
VANCE & HINES EXHAUST SYSTEM INSTALLATION
Installing
1. Attach mounting bracket 338 (supplied) to transmission
clamp
using stock bolt in top hole. Install two 5/16” x 1-1/2”
hex bolts and 5/16” flat washer combinations in
remaining two holes. (hardware supplied). (Figure 1)
2. Replace unused stock mount bolt with 1/4”-20 x 1”
Mark outside
Allen head bolt. (hardware supplied). (Figure 1)
edge
3. Remove head pipes and heat shields from protective
Figure 2
packaging. Note: Removal of end cap may be required.
Place each heat shield on a non-abrasive surface such as
a blanket or carpet. Using a felt tip pen, mark outside
edge of each heat shield to show location of hose clamp
Installing header
mounting clips. (Figure 2)
into heat shields
4. Slide header into heat shields tail end first, engaging end
caps. (Figure 3)
5. Install end caps (if removal was necessary) into tail end
of each heat shield engaging head pipe and heat shield.
Align mounting hole with end cap hole. Install and tighten
Figure 3
1/4”-20 button head screws. Note: Removable thread
locking compound is recommended.
Arrows indicate
6. Install each hose clamp by feeding tail ends of clamps
direction of clamp
into heat shield clips. Take note of location of clamp
screw heads
screw head. (Figure 2&4) (screw head should be
accessible when system is installed on motorcycle for
adjustment purposes.) (Figure 4)
7. Install cylinder exhaust port flanges and circlips (from
stock system) onto head pipes. (Figure 5)
Figure 4
8. Install the head pipe/heat shield assembly into exhaust
Adjust end tips even
port using stock nuts, do not tighten at this time.
9. Slide nut plates inside bracket that is welded to backside of head pipe. While holding nut plates in
place attach head pipe to mounting bracket 338 using four 5/16” flange head bolts (supplied).
Leave them loose at this time. (Figure 6)
10. Tighten cylinder port exhaust flange nuts on front and rear cylinders.
11. Tighten flange bolts on both head pipe brackets.
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D390IN Rev. 1.3
12. Align heat shields so the end of the pipes line up evenly
when viewed from the right hand side of the motorcycle.
Tighten all hose clamps securing heat shields.
13. Check for adequate clearance between all exhaust system
components and motorcycle accessories prone to heat
damage.
14. Be sure to tighten all hardware before starting
motorcycle.
Installing
circlip
Flange
Figure 5
RE-JETTING INSTRUCTIONS
Re-jetting the carburetors will result in realizing the "full"
potential of this performance exhaust system.. Vance & Hines
offers jet kits for most applications. For fuel injected models,
we recommend the use of an adjustable fuel management
system.
Installing nut plate
PLEASE NOTE:
Every effort is made for Vance & Hines Exhaust Systems to
Figure 6
provide improved cornering clearance. However, due to
design and space limitations on some motorcycle models, ground and cornering clearance may not be
improved and in some cases may be reduced. Be sure to follow proper installation instructions.
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D390IN Rev. 1.3
PACKING LIST (All parts actual size)
Nutplate x 2
Small hoseclamps
Headers x 3
5/16” x 1-1/2” Hex Bolt x 2
1/4” - 20 x 1” Allen Bolt x 1
5/16” x 5/8” Flange Hex Bolt x 4
Large hoseclamps
Mufflers x 4
5/16” Washer x 2
HELPFUL HINTS TO AVOID DISCOLORATION OF EXHAUST PIPES
1.
2.
3.
4.
5.
Follow owner’s manual instructions regarding use of the choke (starter enricher). If left on longer
than recommended, discoloration may be accelerated.
Avoid long periods of idling.
Intake leaks can cause engine to run lean and overheat, thus turning the pipes blue.
Make sure there are no exhaust leaks at the junction of the exhaust pipe and cylinder head.
When installing a new set of chrome pipes, make sure your hands are clean and free of oil. After
installation, thoroughly clean pipes with a cleaning solvent that will leave no residue (glass
cleaner, alcohol, ammonia, etc.) before starting the motorcycle.
WARNING!
VANCE & HINES DOES NOT WARRANTY ANY CHROME
PRODUCTS AGAINST DISCOLORATION.
For information on other Vance and Hines products visit our web site at www.vanceandhines.com
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D390IN Rev. 1.3
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