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					Technical specifications
					
				 | 
			
				| Model: | XS 650 / TX 650 | 
			
				| Years: | 1980-81 | 
			
			
					
						| Engine: | Four stroke, parallel twin cylinder, SOHC, 2 valves per cylinder. | 
			
					
						| Capacity: | 653 cc / 39.8 cu in | 
			
					
						| Bore x Stroke: | 75 x 74 mm | 
			
					
						| Compression Ratio: | 8.4:1 | 
			
					
						| Cooling System: | Air cooled | 
			
					
						| Lubrication: | Wet sump | 
			
					
						| Induction: | 2 x Mikuni BS34 carburetors | 
			
					
						| Ignition: | Battery, induction coil | 
			
					
						| Starting: | Electric and kick | 
			
					
						| Max Power: | 39.5 kW / 53 hp @ 7200 rpm | 
			
					
						| Max Torque: | 54 Nm / 5.5 kgf-m / 39.8 lb-ft @ 6800 rpm | 
			
					
						| Transmission: | 5 Speed | 
			
					
						| Final Drive: | Chain | 
			
					
						| Front Suspension: | Telescopic forks | 
			
					
						| Rear Suspension: | Dual shock absorbers | 
			
					
						| Front Brakes: | Twin hydraulic discs, 267 mm | 
			
					
						| Rear Brakes: | Drum | 
			
					
						| Front Tyre: | 3.50H-19 4PR | 
			
					
						| Rear Tyre: | 4.00H-18 4PR | 
			
					
						| Dimensions: | Length: 2175 mm / 85.6" Width: 780 mm / 30.7" Height: 1090 mm / 42.9" | 
			
					
						| Wheelbase: | 1435 mm / 56.5" | 
			
					
						| Ground Clearance: | 150 mm / 5.5" | 
			
					
						| Seat Height: | 810 mm / 31.9" | 
			
					
						| Dry Weight: | 191 kg / 420 lbs | 
			
					
						| Wet Weight: | 217 kg / 478 lbs | 
			
					
						| Fuel Capacity: | 15 Litres / 4.0 US gal | 
			
					
						| Average Consumption: | 5.0 L/100 km / 20 km/l / 47 US mpg | 
			
					
						| Oil Capacity: | 2.5 Litres / 2.6 US qts | 
			
					
						| Top Speed: | 185 km/h / 115 mph |