Categories: Yamaha

Yamaha XS 650 (1972)

The Yamaha XS 650 (XS-2) motorcycle was produced in 1972 and featured a four-stroke, parallel twin-cylinder engine with a capacity of 653 cc. The engine had a compression ratio of 8.4:1 and was cooled by air with wet sump lubrication. It had 2 valve per cylinder, with a bore x stroke of 75 x 74 mm. Induction was done through 2 Mikuni BS38 carburettors and it was ignited by battery and induction coil. Starting was through kick. The motorcycle had a maximum power of 39.5 kW or 53 hp at 7200 rpm and a maximum torque of 54 Nm at 6800 rpm. Transmission was via a 5-speed gearbox with a final drive through chain. The front suspension featured telescopic forks with dual shock absorbers at the rear. It had a single disc front brake and a drum rear brake, with tyre sizes of 3.50-19 and 4.00-18 respectively. The motorcycle had dimensions of 2175 mm (length) x 905 mm (width) x 1135 mm (height) with a wheelbase of 1410 mm and ground clearance of 150 mm. The dry weight was 185 kg with a fuel capacity of 12.5 litres and oil capacity of 3.0 litres. The top speed of the Yamaha XS 650 was 185 km/h or 115 mph.


Technical specifications:

Make Model: Yamaha XS 650 (XS-2)

Year: 1972

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 BS38 carburetors

Ignition: Battery, induction coil

Starting: 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: Single disc

Rear Brakes: Drum

Front Tyre: 3.50-19

Rear Tyre: 4.00-18

Dimensions: Length: 2175 mm / 85.6″Width: 905 mm / 35.0″Height: 1135 mm / 44.7″

Wheelbase: 1410 mm / 55.5″

Ground Clearance: 150 mm / 5.5″

Dry Weight: 185 kg / 408 lbs

Fuel Capacity: 12.5 Litres / 3.3 US gal

Oil Capacity: 3.0 Litres / 3.2 US qts


Top Speed: 185 km/h / 115 mph
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