Kawasaki 250 S: history, specs, pictures

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Kawasaki 250 S
Also called 250 S 1 Mach I
Production 1972 - 1974
in-line three, two-stroke
Bore / Stroke 45.0mm x 52.3mm
Top Speed 93 mph (150 km/h)
Horsepower 27.36 HP (20.4 KW) @ 8000RPM
Transmission Gear box: 5-speed
Final Drive: chain
Brakes Front: expanding brake
Rear: expanding brake
Front Tire 3.00-18
Rear Tire 3.25-18
Weight 150.0 kg (wet)
Recommended Oil K-tech 10W-40
Fuel Capacity 3.7 Gallon (14.00 Liters)
Manuals Service Manual

The Kawasaki 250 S 1 Mach I was a in-line three, two-stroke standard produced by Kawasaki between 1972 and 1974. It could reach a top speed of 93 mph (150 km/h). Claimed horsepower was 27.36 HP (20.4 KW) @ 8000 RPM.


The engine was a air cooled in-line three, two-stroke. A 45.0mm bore x 52.3mm stroke result in a displacement of just 249.0 cubic centimeters. Fuel was supplied via a port control.


The bike has a 5-speed transmission.


It came with a 3.00-18 front tire and a 3.25-18 rear tire. Stopping was achieved via expanding brake in the front and a expanding brake in the rear. The 250 S 1 Mach I was fitted with a 3.7 Gallon (14.00 Liters) fuel tank.