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					Technical specifications
					
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				| Model: | CRF 450X | 
			
				| Years: | 2009-10 | 
			
			
					
						| Engine: | Four stroke, single cylinder, DOHC, 4 valves | 
			
					
						| Capacity: | 449 cc / 27.4 cu-in | 
			
					
						| Bore x Stroke: | 96 x 62mm | 
			
					
						| Cooling System: | Liquid cooled | 
			
					
						| Compression Ratio: | 12.0:1 | 
			
					
						| Lubrication: | Wet sump | 
			
					
						| Induction: | Keihin 40mm flat-slide | 
			
					
						| Ignition: | CD with electronic advance and lighting coil | 
			
					
						| Starting: | Electric & kick | 
			
					
						| Max Power: | 44.8 hp / 33 kW @ 7500 rpm | 
			
					
						| Max Torque: | 43 Nm / 4.38 kg-m @ 7000 rpm | 
			
					
						| Clutch: | Wet, multiple discs, cable operated | 
			
					
						| Transmission: | 5 Speed | 
			
					
						| Final Drive: | #520 chain; 14T/40T | 
			
					
						| Front Suspension: | Inverted fully adjustable 47mm Showa cartridge forks, 16-way rebound settings, 16-way compression | 
			
					
						| Front Wheel Travel: | 315 mm / 12.4 in | 
			
					
						| Rear Suspension: | Pro Link Showa single shock with 312mm of travel 17-way rebound settings, 13 low speed compression settings and 3.5 turns of high speed compression adjustment) | 
			
					
						| Rear Wheel Travel: | 315 mm / 12.4 in | 
			
					
						| Front Brakes: | Single 240mm disc 2 piston caliper | 
			
					
						| Rear Brakes: | Single 240mm disc | 
			
					
						| Front Tyre: | 80/100-21 | 
			
					
						| Rear Tyre: | 110/100-18 | 
			
					
						| Rake: | 27.35° | 
			
					
						| Trail: | 117 / 4.6 in | 
			
					
						| Dimensions: | Length 2178 mm / 85.7 in Width 821 mm / 32. in Height 1273 mm / 50.1 71 | 
			
					
						| Wheelbase: | 1480 mm / 58.3 in | 
			
					
						| Seat Height: | 963 mm / 37.9 in | 
			
					
						| Ground Clearance: | 346 mm / 13.6 in | 
			
					
						| Dry Weight: | 113 kg / 249 lbs | 
			
					
						| Wet Weight: | 118 kg / 260 lbs | 
			
					
						| Fuel Capacity: | 7.2 Litres / 1.9 gal | 
			
					
						| Reviews: | Motorcycle-USA / Motorcycle-USA Enduro Shootout |