2006 Honda CRF250X
The CRF250X has made a big name for itself winning magazine shootouts as well
as the hearts and minds of serious off-road riders everywhere. Now with weight
trimmed and performance tuned for even more exciting riding enjoyment, the CRF250X
offers a rare combination of light weight and tractable power in one of the best handling
packages in the off-road world.
On top of that, the CRF250X gives you the extra-added convenience of easy and
reliable push-button electric starting, a smooth-shifting wide-ratio transmission, endurostyle
lights for when your fun keeps going after the sun goes down, and versatile
performance that's been specially tuned for more high-flying fun than you've ever had
in a single dirt-riding machine. Looking for the performance of a motocross champion
in a dirt bike that anybody can enjoy? Look no further than the CRF250X.
Colours;
Extreme Red (with White number plate and sidecovers)
Features and Benefits;
New Features;
New lighter weight rear wheel hub.
New lighter weight swingarm.
New lighter weight rear damper body.
Lightweight front fork guards and cable brackets borrowed from CRF450X.
New front axle placement same as CRF250R for improved fork action and turning
capability.
Overall weight reduced by 0.5kg.
Honda Racing-inspired colours and graphics.
Unique Features;
Push-button electric start system for easy start-ups in all conditions.
Exhaust emissions comply with all local regulations for off-road motorcycles.
Ample 8.3-litre fuel tank capacity.
Resettable, easy-to-read three-digit competition odometer.
Spark arrester-equipped silencer complies with all local fire and noise regulations.
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 enduro riding needs.
18" rear wheel provides enhanced protection against flat tyres.
T-ring sealed chain is narrower, stronger and lighter than conventional chains.
Engine/Drivetrain;
Powerful liquid-cooled 249cm3 4-stroke 4-valve Unicam engine is designed to
produce power across a wide rpm band for easy-to-control operation.
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.
Lightweight and compact built-in auto decompressor system provides superb coldstarting
and hot-starting operation.
Compact, lightweight engine assembly weighs only 26.4kg.
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 from above. The camshaft's centre exhaust lobe actuates
two 26mm steel exhaust valves via a forked, low-friction, roller rocker-arm.
Lightweight titanium intake valves permit use of smaller valve springs, reducing
overall engine height.
High-strength, low-carbon steel crankshaft with carburised main journals for
maximum durability at sustained high-rpm operation.
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.
Double-carburised connecting rod utilises big-end needle bearing and thrust washers
for maximum high-rpm performance and durability.
Lightweight NiCaSil cylinder lining ensures cooler and quieter operation for
extended engine life.
Press-fitted spark plug pipe fits between forked exhaust rocker arms, further
contributing to compact cylinder head design.
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.
Vertically split crankcases feature a built-in oil pump, reducing weight compared to
conventional designs.
Exhaust system uses a lightweight stainless steel exhaust header and muffler
equipped with spark arrester.
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 5-speed wide-ratio transmission.
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 downtube
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 downtube.
Forged aluminium steering head and tapered downtube section designed for
optimised frame rigidity. Narrow frame spars and tall swingarm pivot plates combine
to create a narrow overall frame cross-section for superb rider comfort and
manoeuvrability.
The aluminium frame design is matched to rider ergonomics to maximise handling
and control operation.
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 315mm 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 a single, fully adjustable Showa rear
damper and 315mm 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.
Thick 25mm rear axle diameter and large-diameter bearings provide optimum
rigidity and strength to withstand torturous track conditions.
Large, 240mm front and rear brake rotors.
Compact dual-piston front brake calliper, anodised aluminium brake pistons and
lightweight front brake rotor minimise unsprung weight for improved turning and
handling.
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.
Additional Features;
All plastic body components (including radiator shroud, sidecovers, rear fender, seat
base, fuel tank, front fender, and front headlight) are designed for slimmer, more
aggressive styling and light weight.
Rider ergonomics optimised by adapting handlebar, seat and footpeg height to place
rider's legs at frame's narrowest cross-section for improved comfort and handling feel.
Seat cushion uses foam construction that follows the shape of the fuel tank,
providing a smooth transition to increase rider mobility and comfort.
Non-slip seat cover enhances rider control.
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.
Wide, cleated stainless steel footpegs are self-cleaning, resist corrosion, provide
excellent grip and fold for extra ground clearance.
Aluminium Renthal handlebar (971 bend) is rubber-mounted to reduce rider fatigue
and improve comfort.
CR handlebar holders provide three different mounting positions: standard CRF250X
holder (CRF450R/CR125R/CRF250R-type) provides +/-3mm fore or aft position to
match rider preference, and optional holder (CR250R-type) provides neutral position.
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.
Washable, two-stage 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.
Technical Specifications - CRF250X (ED-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 - 20.5kW/9,000min-1 (95/1/EC)
Max. Torque - 22.9Nm/8,000min-1 (95/1/EC)
Fuel System;
Carburation - 37mm Keihin FCR flat slide carburettor with Throttle Position Centre (TPS)
Fuel Tank Capacity - 8.3 litres (including 1.5-litre reserve)
Electrical System;
Ignition System - Computer-controlled digital capacitor discharge with
electronic advance and lighting coil
Starter - Electric / Primary kick
Drivetrain;
Transmission - 5-speed
Primary Reduction - 3.611 (65/18)
Gear Ratios - 1; 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 - (LxWxH) 2,174 x 827 x 1,263mm
Wheelbase - 1,481mm
Caster Angle - 27° 54'
Trail - 118mm
Seat Height - 958mm
Ground Clearance - 346mm
Dry Weight - 102kg
Kerb Weight - 115kg
Suspension;
Type - Front, 47mm inverted Showa leading-axle twin-chamber cartridgetype
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 high-speed (3.5-turn) compression and 17-step
rebound damping; 315mm axle travel
Wheels;
Type - Front, Aluminium rim/wire spoke
Rear - Aluminium rim/wire spoke
Rim Size - Front, 21 x 1.60
Rear - 18 x 2.15
Tyres - Front, 90/90-21M/C 54R
Rear - 120/90-18M/C 65R
Brakes;
Type - 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
All specifications are provisional and subject to change without notice.
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