2006 crf450r press information the choice of motocross off-road flattrack and supermoto riders everywhere honda s race-winning crf450r receives a host of refinements in 2006 to extend its dominance its roost-raising power delivery light rigid and quick-handling aluminium frame and supple works racer suspension systems combine with a wealth of refinements and quieter operation to make this big 4-stroke the overwhelming class favourite and one of the best-handling dirt trackers you ll find anywhere colours · extreme red with white number plate and sidecovers 2006 crf450r e1
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features and benefits new features · engine relocated 5mm forward and 5mm lower for improved turning and manoeuvrability · engine placement lowers centre of gravity for improved weight feel · new intake valve seat material improves valve durability · new carburettor needle for improved engine response · newly designed water pump impeller increases water pump seal life · new exhaust system placement improves mass centralisation · exhaust system sound output meets the fim s new 96 decibel noise regulations · radiators are mounted 5mm lower for lower centre of gravity and improved weight feel · new front fork outer stanchion tubes for lighter weight · new front and rear suspension valving for improved bump absorption · new front hub is lighter and stronger engine/drivetrain · powerful 4-stroke 4-valve unicam engine power is produced across a wide rpm-band for easy-to-control operation · auto decompression and hot restart system make starting easy in all conditions · liquid-cooled 449cm3 u
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steel exhaust valves via a forked low-friction roller rocker arm a separate cam holder contributes to the compact design which allows a remarkable 21.5° included valve angle while saving weight over comparable dohc systems · lightweight titanium intake valves permit use of smaller valve springs reducing overall engine height and saving 15.2g per valve compared to conventional steel valve designs · unique internal pin-rotation-type auto decompressor realises a compact and lightweight system that provides superb cold-starting and hot-restarting operation · high-strength low-carbon steel crankshaft with carburised main journals for maximum durability at sustained high-rpm operation · forged 12 1 compression slipper piston is 130g 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 for maximum high-rpm performance and durability · lightweight nicasil
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· 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 · exhaust system features lightweight titanium exhaust header and heat shield repackable aluminium silencer features stainless steel pipe and long-lasting silencer packing · narrow dual radiators provide significantly more surface area and more effective heat dissipation compared to single-radiator designs chassis/suspension · fourth-generation twin-spar aluminium frame features forged aluminium steering head and tapered downtube section designed for optimised frame rigidity tall swingarm pivot plates and thin frame spars create a narrow overall frame cross-section for superb rider comfort and manoeuvrability · semi-double-cradle frame design features a single large-diameter tapered downtube two rugged box-section rails attach to the base of the downtube and support the engine a forged aluminium steering head provides a compact
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· large 50mm rear damper piston diameter provides consistent performance under demanding riding conditions · large 240mm front and rear brake discs · compact dual-piston front brake calliper designed for over 30g in weight savings over conventional types anodised aluminium brake pistons and lightweight front brake rotor further minimise unsprung weight for improved turning and handling · hrc works-type rear brake system integrates the rear master cylinder and fluid reservoir eliminating conventional external reservoir and hose additional features · frame design allows sidecovers to have larger air-intake ducts contributing to significant air flow increase in the mid and upper-rpm ranges · rider ergonomics are optimised by adapting the handlebar seat and footpeg height to place the rider s legs at the narrowest cross-section of the frame for improved comfort and handling feel · seat cushion follows the shape of the fuel tank providing a smooth transition to increase rider mobility and c
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· cr handlebar holders provide three different mounting positions standard crf450r holder cr125r-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 · 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 · re-packable silencer for maximum performance and minimal noise · comfortable durable controls and high-quality fasteners · stainless steel clutch cable for long-life operation · honda racing-inspired colours and graphics 2006 crf450r e6
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specifications engine type displacement bore x stroke compression ratio carburation ignition system crf450r ed-type liquid-cooled 4-stroke 4-valve sohc single 449cm3 96 x 62.1mm 12 1 40mm keihin fcr flat-slide carburettor computer-controlled digital capacitor discharge with electronic advance starter drivetrain transmission primary reduction gear ratios primary kick 5-speed 2.739 63/23 1 1.800 27/15 2 1.470 25/17 3 1.235 21/17 4 1.050 21/20 5 0.909 20/22 final reduction final drive chassis frame dimensions wheelbase caster trail seat height ground clearance fuel tank capacity 3.692 48/13 #520 roller chain semi-double cradle aluminium twin-spar lxwxh 2,191 x 825 x 1,262mm 1,491mm 26° 47 109.4mm 955mm 339mm 7.2 litres 2006 crf450r e7
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suspension type front 47mm showa inverted leading-axle twin-chamber cartridge-type telescopic fork with 16-step adjustable compression and rebound damping 315mm axle travel rear pro-link with showa damper adjustable low-speed 13-step high-speed 3.5-turn compression and 17-step rebound damping 320mm axle travel wheels type front aluminium rim/wire spoke rear aluminium rim/wire spoke rim size front 21 x 1.60 rear 19 x 2.15 tyres front 80/10021 51m rear 110/9019 62m brakes type front 240mm hydraulic disc with dual-piston calliper and sintered metal pads rear 240mm hydraulic disc with single-piston calliper and sintered metal pads all specifications are provisional and subject to change without notice 2006 crf450r e8
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