CRF250X - hoc.org.uk

CRF250X - hoc.org.uk
CRF250X
2009
Press Information
UK-EN – 1/6
CRF250X - 2009
Introduction
Colours
The high-spirited CRF250X combines light weight,
strong, versatile power, confidently responsive handling
and unrivalled fun in one of the finest dirt bikes to be
found in the world of off-road riding. Acclaimed by
the motorcycle press, enthusiasts and serious off-road
riders everywhere, it features the easy dependability of
push-button electric starting, enduro-style lights to
extend your fun after the sun goes down, and
the strong, versatile performance of a motocross
champion that anybody can enjoy.
• Extreme Red (with White number plate and
sidecovers)
Are you battling for a position right up front ahead of
hard-core competition? Or just looking for pure highflying,
roost-throwing,
dirt
riding
enjoyment?
The dynamic CRF250X’s winning combination of easyhandling excitement and solid dependability will deliver
more fun than you’ve ever had in the dirt.
UK-EN – 2/6
CRF250X - 2009
Features and Benefits
Engine/Drivetrain
• Powerful liquid-cooled, electric-start 249cm³ 4-stroke
4-valve Unicam engine is designed to produce strong
power across a wide rev range for easy-to-control
operation.
• Push-button electric starter ensures easy start-ups in
all conditions.
• Innovative Honda Unicam valve train provides both
the light weight of a compact single-cam design and an
optimum combustion chamber shape for maximum
power at all engine speeds.
• Unicam valve train features a single carburised
camshaft directly actuating two 31mm titanium intake
valves. The camshaft’s centre exhaust lobe actuates two
26mm steel exhaust valves via a forked, low-friction,
roller rocker-arm.
• Electric starter drives the clutch side of
the crankshaft to provide superior lubrication of starter
gears, while making possible a narrow engine with
a short, strong crankshaft.
• Magnesium ACG cover, clutch cover and cylinder
head cover reduce engine weight.
• Forged 12.9 : 1 compression slipper piston is lighter
than conventional designs, for quick-revving response
while maintaining excellent cylinder sealing and high-rpm
power.
• 37mm Keihin FCR-type carburettor features four
rollers on the flat slide for light throttle effort, smooth
operation, crisp throttle response and excellent
rideability.
• Carburettor features throttle position sensor (TPS) that
helps maintain linear throttle response throughout
the rpm range.
• Twin-sump lubrication system separates oil supply to
crankshaft, piston and valve train from supply to clutch
and transmission. This ensures a steady supply of cool
oil to the clutch, eliminates clutch and transmission
material contamination of the engine oil, reduces
the amount of circulating oil and permits the use of
a smaller oil pump.
• Exhaust system uses a lightweight stainless steel
exhaust header and an aluminium silencer equipped with
a spark arrester which complies with all local fire and
noise regulations.
• Dual radiators feature a refined core area for improved
heat dissipation compared to conventional dual-radiator
designs, and a compact coolant recovery tank.
• Gear-driven balancer reduces vibration and drives
the water pump.
• Eight-plate clutch provides surface area necessary to
handle engine’s strong torque, while carefully matched
clutch springs provide a light feel at the lever.
• T-ring-sealed chain is approximately 1.6mm narrower
and stronger than conventional chains.
• Durable, smooth-shifting
transmission.
wide-ratio
5-speed
Chassis/Suspension
• Fourth-generation twin-spar aluminium frame derived
from Honda’s CR series of championship motocrossers.
• Semi-double-cradle frame design features a single,
large-diameter tapered down-tube for optimised frame
rigidity, with two rugged box-section rails attached to its
base to support the engine.A forged aluminium steering
head provides a compact and extremely durable mount
for the frame spars and engine down-tube.
• Narrow frame spars and tall swingarm pivot plates
combine to create a narrow overall frame cross-section
for superb rider comfort and manoeuvrability.
• Suspension tuned for competitive off-road riding
needs.
UK-EN – 3/6
CRF250X - 2009
• Lightweight, 47mm Showa inverted twin-chamber
cartridge-type fork with aluminium dampers is derived
from the CRF250R and features settings unique to
the CRF250X.The fork offers 280mm of travel, 16-step
rebound and 16-step compression damping
adjustability, as well as stiffer springs for improved midstroke action. The inner surfaces of the front fork outer
tubes receive the same honing treatment as Works bikes
for low-friction operation.
• Pro-Link rear suspension system features single, fully
adjustable Showa rear damper with optimised damper
settings and 312mm of wheel travel, separate low-speed
(13-step) and high-speed (3.5 turns) compression
damping adjusters, and 17-step adjustable rebound
damping.
• Large 50mm rear damper piston diameter provides
consistent performance under demanding riding
conditions.
• Swingarm features a dual-axis, double-taper design
with a large cast aluminium cross-member offering high
strength and light weight.
• Front wheel features large-diameter front axle and
wide wheel-bearing span for excellent rigidity.
• 18" rear wheel features same lightweight rear hub and
lightweight HRC Works-type aluminium spoke nipples as
used on CRF250R for reduced unsprung weight and
enhanced protection against flat tyres.
Additional Features
• All plastic body components (including radiator
shroud, side covers, rear fender, seat base, fuel tank,
front fender, and front number plate) are designed for
slim, aggressive styling and light weight.
• Ample 7.6-litre fuel tank capacity.
• Powerful 35-watt halogen headlight features
innovative lens design for wide range of illumination.
• Resettable, easy-to-read three-digit competition
odometer.
• Eye-catching LED taillight integrated into rear fender.
• Rider ergonomics optimised by positioning rider’s legs
at frame’s narrowest width for improved comfort and
handling feel.
• Rear brake pedal and shift lever made of lightweight
aluminium and designed to complement the riding
position.
• Wide, cleated stainless steel footpegs are selfcleaning, resist corrosion, provide excellent grip and fold
for extra ground clearance.
• Aluminium Renthal handlebar (971 bend) is rubbermounted to reduce rider fatigue and improve comfort.
• Handlebar holders provide two different mounting
positions to match rider preference.
• Large, 25mm-diameter rear axle and large-diameter
bearings provide optimum rigidity and strength to
withstand torturous track conditions.
• Works-type handlebar grips add to rider comfort.
• Compact dual-piston front brake calliper, anodised
aluminium brake pistons and lightweight 240mm Worksstyle brake rotors minimise unsprung weight for
improved turning and handling.
• Quick-adjust clutch.
• HRC Works-type rear brake system integrates
the rear master cylinder and fluid reservoir into one
compact, lightweight unit.
• Dunlop 742FA front tyre improves turning feel and
traction.
• Adjustable front brake lever.
• Chain guide material offers improved wear resistance,
with five times longer service life than conventional
materials.
• Front disc brake cover helps protect rotor and calliper
from damage.
• Removable rear sub-frame allows easy maintenance.
UK-EN – 4/6
CRF250X - 2009
• Convenient sidestand.
• Washable, easy-access two-stage urethane foam air
filter for optimal engine protection and easy
maintenance.
• Comfortable, durable controls and high-quality
fasteners.
• Stainless steel clutch cable for long life.
• Honda Racing-inspired colours and graphics.
UK-EN – 5/6
CRF250X - 2009
Specifications
Suspension
General
Model
Front
47mm inverted Showa leading-axle twinchamber cartridge-type telescopic fork with
16-step adjustable compression and rebound
damping; 315mm axle travel
Rear
Pro-Link with single Showa damper,
adjustable low-speed (13-step) and highspeed (3.5-turn) compression and 17-step
rebound damping; 315mm axle travel
Type
Front
Aluminium rim/wire spoke
Rear
Aluminium rim/wire spoke
Rim Size
Front
21M/C x 1.60
Rear
18M/C x 2.15
Front
80/100 21M/C (54R)
Rear
100/100 18M/C (65R)
Front
240 x 3mm hydraulic disc with dual-piston
calliper and sintered metal pads
Rear
240 x 4mm hydraulic disc with single-piston
calliper and sintered metal pads
CRF250X
Mold Type
ED-type
Type
Engine
Type
Liquid-cooled 4-stroke 4-valve SOHC single
Displacement
249cm³
Bore x Stroke
78 x 52.2mm
Compression Ratio
12.9 : 1
Max. Power Output
21.9kW / 9,000min-1(95/1/EC)
Max. Torque
24.2Nm / 8,000min-1(95/1/EC)
Wheels
Fuel System
37mm Keihin FCR flat slide carburettor with
throttle position sensor (TPS)
Carburation
Fuel Tank Capacity
Tyre Size
7.2 litres (including 1.5-litre reserve)
Brakes
Electrical System
Ignition System
Computer-controlled digital capacitor
discharge with electronic advance and lighting
coil
Starter
Electric / Primary kick
Type
Drivetrain
Transmission
5-speed
Primary Reduction
3.611 (65/18)
Gear Ratios
2.384 (31/13)
2
1.750 (28/16)
3
1.333 (28/21)
4
1.041 (25/24)
5
0.814 (22/27)
Final Reduction
3.786 (53/14)
Final Drive
#520 T-ring roller chain
Frame
Type
Semi-double cradle; aluminium twin-spar
Chassis
Dimensions
2,174 x 827 x 1,261mm
Wheelbase
1,481mm
Caster Angle
27° 54'
Trail
118mm
Seat Height
957.5mm
Ground Clearance
340.3mm
Kerb Weight
114.8kg
All specifications are provisional and subject to change without notice.
UK-EN – 6/6
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