Allstate SR250: history, specs, pictures

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Allstate SR250
Manufacturer
Also called SR 250
Production 1964 - 1968
Engine
single cylinder, two-stroke
Bore / Stroke 45.0mm x 78.0mm
Top Speed 50 mph (80 km/h)
Horsepower 15.69 HP (11.7 KW) @ 5800RPM
Fuel System carburetor
Transmission Final Drive: chain
Suspension Front: telescopic
Brakes Front: expanding brake (drum brake)
Rear: expanding brake (drum brake)
Front Tire 3.50-16
Rear Tire 3.50-16
Weight 309.09 pounds (140.2 Kg) (dry),
Manuals Service Manual


The Allstate SR250 was a single cylinder, two-stroke standard produced by Allstate between 1964 and 1968. It could reach a top speed of 50 mph (80 km/h). Claimed horsepower was 15.69 HP (11.7 KW) @ 5800 RPM.

Engine[edit | edit source]

The engine was a air cooled single cylinder, two-stroke. A 45.0mm bore x 78.0mm stroke result in a displacement of just 250.0 cubic centimeters.

Chassis[edit | edit source]

It came with a 3.50-16 front tire and a 3.50-16 rear tire. Stopping was achieved via expanding brake (drum brake) in the front and a expanding brake (drum brake) in the rear. The bike weighed just 309.09 pounds (140.2 Kg).