| MODEL | HONDA CRF 450X 2005 - 2006 |
| Year | 2005 - 2006 |
| Engine Type | Four stroke, single cylinder, Unicam SOHC, 4 valves |
| Displacement / Capacity | 449 cc / 27.4 cu in |
| Bore X Stroke | 96 x 62 mm |
| Compression Ratio | 12.0:1 |
| Cooling System | Liquid cooled |
| Max Power | 33 kW / 44.8 hp @ 7500 rpm |
| Max Torque | 43 Nm / 4.38 kgf-m @ 7000 rpm |
| Ignition | CD with electronic advance and lighting coil |
| Induction | Keihin 40 mm flat-slide carburettor |
| Start System | Electric & kick |
| TRANSMISSION SPECS | |
| Lubrication | Wet sump |
| Gear Box | Wide-ratio 5 Speed |
| Clutch | Wet, multiple discs, cable operated |
| Final Drive | #520 chain |
| CHASSIS SPECS | |
| Frame | Aluminium twin-spar |
| Front Suspension | 47 mm inverted Showa cartridge fork, 16-position rebound and compression adjustment, 315 mm / 12.4 in travel |
| Rear Suspension | Pro-Link Showa single shock, adjustable preload, 17-position rebound, 13-position low-speed and 3.5-turn high-speed compression |
| Front Brakes | Single 240 mm disc, 2-piston caliper |
| Rear Brakes | Single 240 mm disc |
| DIMENSION SPECS | |
| Overall Length | 2178 mm / 85.7 in |
| Overall Width | 821 mm |
| Overall Height | 1273 mm / 50.1 in |
| Seat Height | 963 mm / 37.9 in |
| Wheelbase | 1480 mm / 58.3 in |
| Ground Clearance | 346 mm / 13.6 in |
| Dry Weight | 113 kg / 249 lbs |
| Wet Weight | 118 kg / 260 lbs |
| WHEEL SPECS | |
| Front Tyre | 80/100-21 |
| Rear Tyre | 110/100-18 |
| FUEL SYSTEM | |
| Fuel Capacity | 8.6 Litres |
| Fuel Consumption | — |
| Top Speed | — |
Introduced for 2005, the CRF450X was the enduro offshoot of the CRF450R motocrosser, reworked rather than simply detuned. It gained an electric starter (needing wider crankcases), a wide-ratio five-speed gearbox, extra flywheel weight and midrange-biased tuning, an 18-inch rear wheel, a softer-flexing aluminium frame, lighting, a sidestand and a larger tank. It was soon a Baja 1000 winner and, in Australia, could even be road-registered.
