| 
					Technical specifications
					
				 | 
			
				| Model: | 640 LC4 Enduro | 
			
				| Years: | 2005-07 | 
			
			
					
						| Engine: | Four stroke, single Cylinder. SOHC, 4 valves, engine balancer | 
			
					
						| Capacity: | 624.6 cc / 38.1 cu in | 
			
					
						| Bore x Stroke: | 101 x 78 mm | 
			
					
						| Compression Ratio: | 11.5:1 | 
			
					
						| Cooling System: | Liquid cooled | 
			
					
						| Lubrication: | 2 x Eaten oil pumps | 
			
					
						| Induction: | Mikuni BST 40 carburetor | 
			
					
						| Ignition: | Kokusan contactless DC-CDI ignition with advanced system | 
			
					
						| Starting: | Electric & kick | 
			
					
						| Spark Plug: | NGK DRBEACPR 8 E | 
			
					
						| Battery: | 12V 8Ah, maintenance free | 
			
					
						| Max Power: | 40.1 kW / 55 hp @ 7000 rpm | 
			
					
						| Max Torque: | 55 Nm / 5.6 kgf-m / 40.6 lb-ft @ 5500 rpm | 
			
					
						| Clutch: | Multi-disc in oil bath | 
			
					
						| Transmission: | 5 Speed | 
			
					
						| Primary Drive Ratio: | 30:81, straight cut gears | 
			
					
						| Gear Ratios: | 1st 14:35 / 2nd 15:24 / 3rd 18:21 / 4th 20:19 / 5th 22:18 | 
			
					
						| Final Drive Ratio: | 17:38 | 
			
					
						| Final Drive: | Chain, O-ring 5/8 x 1/4" | 
			
					
						| Frame: | Central chrome-moly steel frame | 
			
					
						| Front Suspension: | White Power – Up Side Down 4357 MXMA fork | 
			
					
						| Front Wheel Travel: | 280 mm / 11.0 in | 
			
					
						| Rear Suspension: | Central shock absorber (WP BAVP3612) with PRO-LEVER linkage to rear- swing-arm with needle bearing | 
			
					
						| Rear Wheel Travel: | 320 mm / 12.6 in | 
			
					
						| Front Brakes: | Single 300 mm disc, 4 piston caliper | 
			
					
						| Rear Brakes: | Single 220 mm disc, 1 piston caliper | 
			
					
						| Front Tyre: | 90/90 - 21 | 
			
					
						| Rear Tyre: | 140/80 - 18 | 
			
					
						| Steering Head Angle: | 62o | 
			
					
						| Wheelbase: | 1510 mm / 59.4 in | 
			
					
						| Ground Clearance: | 310mm / 12.2 in | 
			
					
						| Seat Height: | 930 mm / 36.6 in | 
			
					
						| Wet Weight: | 158 kg / 348 lbs | 
			
					
						| GVWR: | 350 / 773 lbs | 
			
					
						| Engine Oil Capacity: | 2.1 L / 2.2 US qt / 1.8 Imp qt | 
			
					
						| Fuel Capacity: | 12 L / 3.2 US gal / 2.6 Imp gal | 
			
					
						| Consumption Average: | 4.7 sec | 
			
					
						| Top Speed: | 168 km/h / 104 mph |