Imme R100
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The Imme R100 was a lightweight motorcycle made by Riedel AG from 1948 to 1951. It is noted for its simple and innovative design with many advanced features. Wikipedia
Engine: 99 cc (6.0 cu in) piston-ported two-stroke single-cylinder engine
Power: 4.5 PS (3.3 kW; 4.4 hp) at 5,800 rpm