Categories: Yamaha

Yamaha XS 650 (1970)

The Yamaha XS 650 (XS-1B) is a classic motorcycle model produced in 1970. It boasts a four-stroke, parallel twin-cylinder engine with a capacity of 653cc and a maximum power output of 39.5 kW. The engine features a single overhead camshaft and two valves per cylinder, paired with a wet sump lubrication system and 2 Mikuni BS38 carburetors for fuel delivery. The bike utilizes a battery and induction coil for ignition and has kickstarting capabilities. The XS 650 features a 5-speed transmission and a chain final drive. The suspension system includes telescopic forks in the front and dual shock absorbers in the rear. Both the front and rear brakes are drum brakes, and the bike has a top speed of 185 km/h (115 mph). The XS 650 has a length of 2175mm, a width of 905mm, and a height of 1135mm, with a wheelbase of 1410mm and a ground clearance of 150mm. The dry weight of the bike is 185kg, and it has a fuel capacity of 12.5 liters and an oil capacity of 3.0 liters. Overall, the Yamaha XS 650 is a classic motorcycle model with impressive specifications and capabilities.


Technical specifications:

Make Model: Yamaha XS 650 (XS-1B)

Year: 1970

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: Drum

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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