Yamaha XS850 (1978-79)

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The Yamaha XS850G is a vintage motorcycle produced in 1978-79. Its engine is a four-stroke, DOHC, transverse three-cylinder, with a capacity of 826cc and 2 valves per cylinder. The bike features 3 x 34mm Hitachi carburetors, a battery-powered ignition system, and an electric starter. The XS850G has a maximum power output of 57.7 kW/79 hp at 8500 rpm. The transmission is a five-speed with a shaft final drive. The front suspension is air-assisted telescopic forks with 175mm of wheel travel while the rear suspension is a swing arm that is four-way adjustable damping with 99mm of wheel travel. Brakes for the Yamaha XS850G consist of two 267mm discs and 1 piston calipers for the front and a single 267mm disc with a 1 piston caliper in the rear. The front tires are 3.25-19 while the rear is 4.00-18. The bike has a wet weight of 258 kg/569 lbs and a fuel capacity of 24 liters/6.3 US gal. In terms of performance, the XS850G has recorded a standing 1/4 mile of 13.3 sec, reaching a top speed of 158 km/h or 98.2 mph.

Technical specifications:

Make Model: Yamaha XS 850G

Year: 1978-79


Engine: Four stroke, transverse three cylinder, DOHC, 2 valves per cylinder.
Capacity: 826 cc / 50.4 cu in
Bore x Stroke: 71.5 x 68.6 mm
Compression Ratio: 9.2:1
Cooling System: Air cooled
Induction: 3 x 34mm Hitachi carburetors
Ignition: Battery powered triggered
Starting: Electric
Max Power: 57.7 kW / 79 hp @ 8500 rpm
Transmission: 5 Speed
Final Drive: Shaft
Front Suspension: Air assisted telescopic forks, 175mm wheel travel.
Front Wheel Travel: 175 mm / 6.9″
Rear Suspension: Swing arm 4-way adjustable damping, 99 wheel travel
Rear Wheel Travel: 99 mm / 3.9″

Front Brakes: 2 x 267mm Discs, 1 piston calipers
Rear Brakes: Single 267mm disc, 1 piston caliper
Front Tyre: 3.25-19
Rear Tyre: 4.00-18
Wet Weight: 258 kg / 569 lbs
Fuel Capacity: 24 Litres / 6.3 US gal
Standing 1/4 Mile: 13.3 sec / 158 km/h / 98.2 mph

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