Yamaha 250 Racer: history, specs, pictures

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Yamaha 250 Racer
Manufacturer Yamaha
Production 1967
Engine twin, two-stroke
Bore / Stroke 56.0mm x 50.0mm
Top speed 89 mph (144 km/h)
Horse Power 43.05 HP (32.1 KW) @ 10000RPM
Torque 22.87 ft/lbs (31.0 Nm) @ 9500RPM
Fuel system carburettor. 30mm remote float
Wheelbase 51.77 inches (1315 mm)
Fuel capacity 6.0 Gallon (22.71 Liters)
Manuals Service Manual
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The Yamaha 250 Racer was a twin, two-stroke standard produced by Yamaha in 1967. It could reach a top speed of 89 mph (144 km/h). Max torque was 22.87 ft/lbs (31.0 Nm) @ 9500 RPM. Claimed horsepower was 43.05 HP (32.1 KW) @ 10000 RPM.

Engine

The engine was a air cooled twin, two-stroke. A 56.0mm bore x 50.0mm stroke result in a displacement of just 250.0 cubic centimeters. Fuel was supplied via a overhead valves (ohv).

Chassis

The 250 Racer was fitted with a 6.0 Gallon (22.71 Liters) fuel tank. The wheelbase was 51.77 inches (1315 mm) long.