2010 Honda CRF450X

Introduction

The dynamic, electric-start CRF450X takes off-road riding to exhilarating peaks of fun and excitement,
winning hearts and minds while dominating such worldrenowned off-road endurance races as the Baja 1000.
Based on Honda’s phenomenal CRF450R big-bore 4- stroke motocross racer, the CRF450X features breathtaking power, a slim, easy-to-ride form and rugged, longtravel suspension systems augmented by
a revolutionary new development: the Honda Progressive Steering Damper (HPSD), which eases control and smoothes handling in cornering and over rugged terrain. For the best that off-road riding has to offer, look to the amazing CRF450X.

Colours

• Extreme Red (with White number plate and sidecovers)

Features and Benefits

New Features

• Lightweight and compact new Honda Progressive Steering Damper (HPSD) developed by Team
  Honda for improved cornering ability and reduced rider fatigue.
• New front fork triple-clamps feature 22mm offset and revised front axle placement for improved fork action and cornering characteristics.
• 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.
• Carburettor features new accelerator pump and linkage for improved throttle response.
• New lighter and more compact engine decompression system.

Unique Features

• Push-button electric start system for easy start-ups in all conditions.
• Large 7.2-litre fuel tank capacity.
• Resettable, easy-to-read three-digit competition odometer.
• Exhaust emissions comply with all local regulations for off-road motorcycles.
• Spark arrester-equipped silencer complies with all local fire and noise regulations.
• Powerful 35-watt halogen headlight provides a wide range of illumination.
• Eye-catching LED taillight integrated into rear fender.
• Convenient sidestand integrated into left foot-peg bracket can be easily removed for competitive off-road riding needs.
• Smooth-shifting wide-ratio 5-speed transmission.
• Suspension and chassis tuned for competitive offroad riding needs.
• 18" rear wheel provides enhanced protection against flat tyres.
• T-ring sealed chain is narrower, stronger and lighter compared to conventional O-ring chains.
• Skid-plate and engine guards feature a unique threepiece design.

Engine/Drivetrain

• Powerful liquid-cooled, electric-start 449cm³ 4-stroke 4-valve Unicam engine is designed to produce power across a wide rpm band for easy-to-control operation.
• Compact, lightweight engine assembly weighs only 32.2kg.
• 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 rpm.
• Unicam valve train features a single carburised camshaft directly actuating two 35mm titanium intake
  valves. The camshaft’s centre exhaust lobe actuates two 30mm 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, and produce a narrow engine with a short, strong crankshaft.
• Lightweight titanium intake valves permit use of smaller valve springs, reducing overall engine height.
• ACG cover, clutch cover and cylinder head cover are made of magnesium to reduce engine weight.
• Forged 12 : 1 compression slipper piston is lighter than conventional designs, for quick-revving response
  while maintaining excellent cylinder sealing and high-rpm power.
• Lightweight NiCaSil cylinder lining ensures cooler and quieter operation for extended engine life.
• 40mm Keihin FCR-type carburettor features four rollers on the flat slide, resulting in very light throttle effort, smooth operation, crisp throttle response and excellent rideability.
• Carburettor features a 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 silencer equipped with spark
  arrester.
• Dual radiators feature a refined core area for improved heat dissipation compared to conventional dual-radiator designs. Coolant recovery tank is located underneath engine for improved mass centralisation. Coolant tank is protected by a plastic skid-plate.
• Gear-driven balancer reduces vibration and drives the water pump. Eight-plate clutch provide the surface area necessary to handle the engine’s massive torque, while carefully matched clutch springs provide a light feel at the lever.
• T-ring-sealed chain is approximately 1.6mm narrower and stronger compared to conventional chains.
• Durable and versatile 5-speed wide-ratio transmission.

Chassis/Suspension

• Advanced fourth-generation twin-spar aluminium frame.
• HPSD features a compact damper attached to the lower triple-clamp and the steering head to augment
  more aggressive steering characteristics and assist straight-line handling. Tuned specifically for higher
  speed, non-motocross, off-road riding applications, the CRF450X damper incorporates different valving and settings compared to units mounted on motocross models. HPSD provides confident straight-line control at high speeds, a planted feel in corners, less rider fatigue and outstanding handling over a wider variety of terrain and riding conditions.
• 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.
• Lightweight 47mm Showa inverted twin-chamber cartridge-type fork with aluminium dampers is derived
  from the CRF450R and features settings unique to the CRF450X. 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 single, fully adjustable Showa rear damper with newly revised
  damper settings and 313mm of wheel travel, separate low-speed (13-step) and high-speed (3.5-turn)
  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 HRC Works-type lightweight aluminium spoke nipples as used on CRF450R 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.
• 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.
• Large 240mm Works-type front and rear brake rotors.

Additional Features

• All plastic body components (including radiator shroud, side covers, rear fender, seat base, fuel tank,
  front fender, and front headlight) designed for slim, aggressive styling and lighter 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.
• Seat cushion uses foam construction that follows the shape of the fuel tank, providing a smooth transition
  to increase rider mobility and comfort.
• Rear brake pedal and shift lever made of 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 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.
• Works-type handlebar grips add to rider comfort.
• Adjustable front brake lever.
• Hot-start lever conveniently located on clutch perch.
• Quick-adjust clutch perch.
• Chain guide material offers improved wear resistance, with service life five times greater than conventional materials.
• Front disc brake cover helps protect rotor and calliper from damage.
• Removable rear sub-frame allows easy maintenance.
• Comfortable, durable controls and high-quality fasteners.
• Stainless steel clutch cable for long life.
• Honda Racing-inspired colours and graphics.