Simson 425 T: history, specs, pictures

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Simson 425 T
Manufacturer
Production 1955 - 1960
Engine
single cylinder, four-stroke
Bore / Stroke 68.0mm x 68.0mm
Top Speed 62 mph (100 km/h)
Horsepower 11.8 HP (8.8 KW) @ 5500RPM
Fuel System carburetor
Ignition magneto
Transmission Final Drive: shaft drive (cardan)
Suspension Front: telescopic
Brakes Front: expanding brake (drum brake)
Rear: expanding brake (drum brake)
Front Tire 3.25-19
Rear Tire 3.25-19
Weight 308.65 pounds (140.0 Kg) (dry),
Fuel Capacity 3.17 Gallon (12.00 Liters)
Manuals Service Manual


The Simson 425 T was a single cylinder, four-stroke standard produced by Simson between 1955 and 1960. It could reach a top speed of 62 mph (100 km/h). Claimed horsepower was 11.8 HP (8.8 KW) @ 5500 RPM.

Engine[edit | edit source]

The engine was a air cooled single cylinder, four-stroke. A 68.0mm bore x 68.0mm stroke result in a displacement of just 247.0 cubic centimeters.

Chassis[edit | edit source]

It came with a 3.25-19 front tire and a 3.25-19 rear tire. Stopping was achieved via expanding brake (drum brake) in the front and a expanding brake (drum brake) in the rear. The 425 T was fitted with a 3.17 Gallon (12.00 Liters) fuel tank. The bike weighed just 308.65 pounds (140.0 Kg).