CRF250X
CRF250X
All plastic body components designed for
light weight and slim, aggressive form
Spark arrester-equipped silencer
complies with all local fire,
emissions and noise regulations
Push-button electric start provides
easy start-ups in all conditions
Compact and rugged speedometer
with easy-to-read resettable odometer
Ample 7.6-litre fuel tank
features new narrow
design for improved rider
ergonomics
Powerful 35-watt halogen headlight
features innovative lens design
for wide range of illumination
Eye-catching LED taillight
integrated into rear fender
Lightweight 47mm Showa
inverted twin-chamber
cartridge-type fork, specially
tuned for the CRF250X
Easy-access, washable urethane
foam air filter for optimal engine
protection and easy maintenance
Pro-Link rear suspension system
features fully adjustable Showa
damper with revised settings tuned
for competitive off-road riding
New Dunlop 742FA
front tyre for enhanced
turning feel and traction
HRC Works-type rear
brake integrates rear
master cylinder
and fluid reservoir
18" rear wheel with lightweight
hub and aluminium spoke nipples
Convenient
sidestand
Powerful liquid-cooled, electric-start
249cm3 4-stroke 4-valve Unicam engine
Twin-spar aluminium frame
derived from Honda’s CRF series
of championship motocrossers
Compact dual-piston
calliper front brake
with anodised aluminium
pistons and lightweight rotor
All specifications are provisional and subject to change without notice.
2008 I CRF250X I Press Information
CRF250X
2008
Press Information
UK-EN – 1/5
CRF250X - 2008
Introduction
Features and Benefits
The incomparably fun and high-spirited CRF250X
combines light weight, strong, versatile power and
confidently responsive handling in one of the finest dirt
bikes to be found in the world of off-road riding. Hailed
by magazines and serious off-road riders everywhere,
the remarkable CRF250X also features the easy
dependability of push-button electric starting, endurostyle lights to extend your fun after the sun goes down,
and the strong, versatile performance of a motocross
champion that anybody can enjoy. One ride confirms:
the CRF250X pumps out more high-flying fun than
you’ve ever had in the dirt.
New Features
Colours
• Extreme Red (with White number plate and
sidecovers)
• New Works-style front and rear brake rotors reduce
unsprung weight.
• New Dunlop 742FA front tyre for improved turning feel
and traction.
• New narrow-design fuel tank and seat for improved
rider ergonomics.
Unique Features
• Push-button electric start system for easy start-ups in
all conditions.
• Ample 7.6-litre fuel tank capacity.
• Resettable, easy-to-read three-digit competition
odometer.
• Spark arrester-equipped silencer complies with all
local fire and noise regulations.
• Exhaust emissions comply with all local regulations for
off-road motorcycles.
• Powerful 35-watt halogen headlight features
innovative lens design for wide range of illumination.
• Eye-catching LED taillight integrated into rear fender.
• Convenient sidestand.
• Easy-access urethane foam air filter.
• Smooth-shifting wide-ratio 5-speed transmission.
• Suspension tuned for competitive off-road riding
needs.
• 18" rear wheel provides enhanced protection against
flat tyres.
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.
UK-EN – 2/5
CRF250X - 2008
• Unique 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.
• 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.
• 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.
• T-ring-sealed chain is approximately 1.6mm narrower
and stronger than conventional chains.
• Compact, lightweight engine assembly weighs only
26.4kg.
Chassis/Suspension
• 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 flat
slide rollers 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 muffler equipped with spark
arrester.
• Durable 5-speed wide-ratio transmission.
• 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.
• 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. 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 newly revised
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.
UK-EN – 3/5
CRF250X - 2008
• Large 50mm rear damper piston diameter provides
consistent performance under demanding riding
conditions.
• Wide, cleated stainless steel footpegs are selfcleaning, resist corrosion, provide excellent grip and fold
for extra ground clearance.
• Swingarm features a dual-axis, double-taper design
with a large cast aluminium cross-member offering high
strength and light weight.
• Aluminium Renthal handlebar (971 bend) is rubbermounted to reduce rider fatigue and improve comfort.
• 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.
• Large, 25mm-diameter rear axle and large-diameter
bearings provide optimum rigidity and strength to
withstand torturous track conditions.
• Compact dual-piston front brake calliper, anodised
aluminium brake pistons and lightweight front brake rotor
minimise unsprung weight for improved turning and
handling.
• Handlebar holders provide two different mounting
positions to match rider preference.
• Works-type handlebar grips add to rider comfort.
• Adjustable front brake lever.
• Quick-adjust clutch.
• 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.
• Large, 240mm Works-type front and rear brake
rotors.
• Washable, two-stage foam air filter for optimal engine
protection and easy maintenance.
• HRC Works-type rear brake system integrates
the rear master cylinder and fluid reservoir, eliminating
the need for a remote master cylinder reservoir and hose
assembly.
• Comfortable, durable controls and high-quality
fasteners.
Additional Features
• Stainless steel clutch cable for long life.
• Honda Racing-inspired colours and graphics.
• 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.
• Rider ergonomics optimised by adapting handlebar,
seat and footpeg height to place rider’s legs at frame’s
narrowest frame width for improved comfort and
handling feel.
• Rear brake pedal and shift lever made of lightweight
aluminium and designed to complement riding position.
Brake pedal features optimised ratio to match integrated
rear brake master cylinder design.
UK-EN – 4/5
CRF250X - 2008
Specifications
Suspension
General
Model
Front
47mm inverted Showa leading-axle twinchamber cartridge-type telescopic fork with
16-step adjustable compression and rebound
damping; 280mm 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; 312mm 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
90/90 21M/C (54R)
Rear
120/90 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
249.4cm³
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
7.3 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
958mm
Ground Clearance
346mm
Kerb Weight
114.8kg
All specifications are provisional and subject to change without notice.
UK-EN – 5/5
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