General information
Model:	Yamaha XS 650 Special
Year:	1981
Category:	Classic
Engine and transmission
Displacement:	654.00 ccm (39.91 cubic inches)
Engine type:	Twin
Stroke:	4
Power:	48.00 HP (35.0 kW)) @ 7100 RPM
Compression:	8.4:1
Bore x Stroke:	75.0 x 74.0 mm (3.0 x 2.9 inches)
Valves per cylinder:	2
Fuel control:	OHC
Cooling system:	Air
Gearbox:	5-speed
Transmission type final drive:	Chain
Physical measurements
Weight incl. oil, gas, etc:	221.0 kg (487.2 pounds)
Chassis and dimensions
Front tyre dimensions:	3.50-19
Rear tyre dimensions:	130/90-16
Front brakes:	Single disc
Rear brakes:	Expanding brake
Speed and acceleration
Top speed:	156.0 km/h (96.9 mph)
Other specifications
Fuel capacity:	12.00 litres (3.17 gallons)