New Honda 2010 CRF250RA

The 2010 CRF250R is loaded with progressive technology and ready to confirm its domination of Supercross and Motocross tracks yet again. Its lightning-quick prowess and radical looks are matched with a new fuel injection system, even more power, lighter weight and smooth, easy handling characteristics. Whether you’re out to thrash the competition or just enjoy getting the best out of yourself and your motorcycle, the CRF250R is the tool to showcase your expertise.

Features and Benefits

Additional features

• Frame design allows larger intake ducts in airbox sidecovers, contributing to excellent airflow in the mid and upper rpm ranges.
• Front disc brake cover helps protect rotor and caliper from damage.
• Removable rear sub-frame allows easy maintenance.
• Comfortable, durable controls and high-quality fasteners.
• Stainless steel clutch cable for maximum durability.
• Cleated rear brake pedal and folding shift lever constructed in lightweight aluminium and designed to complement the riding position. Brake pedal features optimised ratio to match integrated rear-brake master cylinder design.
• Wide, cleated stainless steel footpegs are selfcleaning, corrosion-resistant, provide excellent grip and fold away for extra ground clearance.
• Works-type handlebar design features long, tapered cushions and deep pre-cut wire grooves for tight, slipfree wire grip.

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Engine/Drivetrain

• Powerful 249cc liquid-cooled 4-stroke 4-valve Unicam engine produces optimal, easy-to-control power across a wide rpm range.
• Lightweight and compact engine features specially designed cylinder head area for improved power delivery in all rpm ranges and lighter weight.
• Unicam valve train provides both the light weight of a compact single-cam drive and an optimum combustion chamber shape for maximum power at all engine speeds.
• Unicam valve train features a single carburised camshaft directly actuating two titanium intake valves. The camshaft’s centre exhaust cam lobe actuates two steel exhaust valves via a low-friction forked roller rocker arm.
• Forged slipper piston and rings rev quickly while maintaining excellent cylinder sealing, high compression ratio and high-rpm power.
• Ni-SiC (nickel-silicon-carbide) coating with high wear resistance has been applied inside the cylinder.
• Balancer shaft and lightweight drive/driven gear balancer reduce vibration.
• Drum stop arm, drum stop arm spring and shift cam are all designed to optimise shift feeling.
• Clutch cover and cylinder-head cover made of magnesium for reduced engine weight.
• Twin-sump lubrication system separates oil supply to crankshaft, piston and valve train from clutch and transmission. This ensures a steady supply of cool oil to the clutch and prevents clutch and transmission material from contaminating the engine oil.
• Rugged eight-plate clutch provides ample surface area to handle the engine’s massive torque, while carefully matched clutch springs provide a light feel at the lever.

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Chassis/Suspension

• Dual-axis, double-taper swingarm design integrates a large cast aluminium cross-member.
• Rear wheel features a thin wall axle, contributing to light weight.
• Front and rear wheels feature lightweight HRC Works type aluminium spoke nipples for reduced unsprung weight.
• Front fork inner cartridge is treated with Kashima coating for a smoother surface, reducing friction of piston and inner cartridge and improving functionality.
• Large 50mm-diameter rear damper piston performs consistently under demanding riding conditions.
• Link-type front brake master cylinder and lightweight brake rotor combine to provide strong braking control.
• Compact dual-piston front brake caliper, anodised aluminium brake pistons and lightweight front brake rotor minimise unsprung weight for improved turning and manoeuvring.
• HRC Works-type rear brake system integrates the rear master cylinder and fluid reservoir, eliminating conventional external reservoir and hose.
• Front and rear brake discs and disc covers are designed for low weight.

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Specifications

Engine
Engine Type	Liquid-cooled 4-stroke 4-valve SOHC single
Displacement	249.4cc
Bore and Stroke	76.8 x 53.8mm
Compression Ratio	13.2 : 1
Carburetion	PGM-FI electronic fuel injection
Ignition	Computer-controlled digital capacitor discharge with electronic advance
Max Power Output	32.4kW / 11,000rpm
Max Torque	29.3Nm / 8,000rpm
Transmission
Starter	Primary kick
Gearbox	5-speed constant mesh
Final Drive	#520 roller chain
Wheels, Suspension and Brakes
Suspension Front	48mm inverted Showa leading-axle twinchamber cartridge-type telescopic fork with 16-step djustable compression and rebound damping; 310mm axle travel
Suspension Rear	Pro-Link with single Showa damper, adjustable low-speed (13-step) & highspeed (3.5-turn) compression and 17-step rebound damping; 320mm axle travel
Brakes Front	240mm x 3mm hydraulic disc with dual piston caliper and sintered metal pads
Brakes Rear	240mm x 4mm hydraulic disc with single piston caliper and sintered metal pads
Tyres Front	80/100-21
Tyres Rear	100/90-19
Dimensions and Weight
Wheelbase	1,493mm
Rake Castor Angle	27° 9'
Trail	116mm
Seat Height	955mm
Ground Clearance	325mm
Kerb Weight	100.7kg
Fuel Capacity	5.7 litres
Dimensions	2,187 x 827 x 1,273mm
RRP	All specifications are provisional and subject to change without notice.

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