Yamaha XS850

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Yamaha XS850
Manufacturer Yamaha
Also called Specials
Production 80-81
Engine 850cc
Sparkplug BP7ES '80-81
Battery YB14L-A2 '80-81
Front Tire '80-81
Rear Tire 130/90-16 '80-81
Manuals Service Manual
Tech Specs · Brochures · Reviews · Ads · Videos

The Yamaha XS850 is a motorcycle produced by Yamaha from 1980 to 1981.

Made in the US from 80-81 Also offered in Europe in 80-82 This is an evolved version of the XS750 (a shaft drive, 2 valve per cylinder, 3 cylinder, 4 stroke) which was basically bored out in 1980 to become the 850.


Offered as

  • XS850G 80 Standard UJM
  • XS850SG 80 Special
  • XS850LG 80 Midnight Special
  • XS850H 81 Standard UJM
  • XS850SH 81 Special
  • XS850LH 81 Midnight Special

Information and a forum following is the same as for the XS750.

Yamaha XS850
Manufacturer Yamaha
Also called XS 850
Production 1976 - 1982
Class Naked
Engine in-line three, four-stroke
Bore / Stroke 71.5mm x 68.6mm
Compression ratio 9.2:1
Top speed 122 mph (196 km/h)
Horse Power 77.38 HP (57.7 KW) @ 8500RPM
Battery 9.2:1
Transmission Gear box: 5-speed
Final Drive: shaft drive (cardan)
Suspension Front: Telescopic Forks
Rear: Swing Arm
Brakes Front: dual disc
Rear: single disc
Front Tire 3.25-19
Rear Tire 4.00-18
Weight  (dry), 258.0 kg (wet)
Fuel capacity 6.34 Gallon (24.00 Liters)
Manuals Service Manual
Tech Specs · Brochures · Reviews · Ads · Videos

The Yamaha XS850 was a in-line three, four-stroke Naked motorcycle produced by Yamaha between 1976 and 1982. It could reach a top speed of 122 mph (196 km/h). Claimed horsepower was 77.38 HP (57.7 KW) @ 8500 RPM.

Engine

The engine was a air cooled in-line three, four-stroke. A 71.5mm bore x 68.6mm stroke result in a displacement of just 826.0 cubic centimeters. Fuel was supplied via a double overhead cams/twin cam (dohc).

Drive

The bike has a 5-speed transmission.

Chassis

It came with a 3.25-19 front tire and a 4.00-18 rear tire. Stopping was achieved via dual disc in the front and a single disc in the rear. The front suspension was a Telescopic Forks while the rear was equipped with a Swing Arm. The XS850 was fitted with a 6.34 Gallon (24.00 Liters) fuel tank.

1976 - 1980 Yamaha XS 850

1976 - 1980 Yamaha XS 850

The XS 750 and XS 850 were produced from 1976 to 1980. The US enjoyed this bike one year more. Because they had three cylinders, everybody knows the bikes as "Triples". At the beginning, the bike displaced 750cc and later the engine was increased to 850cc, so, the XS750 changed into a new XS850 machine. The Triples had electronic ignition from 1978.