Off-road sports design based on the Simson GS-50 off-road sports classics from the 1970s that fits the Simson S51, S53, SR50, KR51/2 with M500 engine.
- perfectly adapted to the dimensions of the Simson cylinder
- the head closes tightly to the original cylinder at all edges
- perfect cooling and perfect casting
- for 70cc cylinder
- suitable models: S51, S53, S70
- original Simson* number: 222992
Bolt pattern 50x50mm, for max ø46mm bore. Length 127mm width 140mm.