Cylinder head with 38mm combustion chamber (original diameter) suitable for 50cc Simson S51, S53 or SR50 and Schwalbe KR51/2 cylinder.
Note: Analogous to the original head when mounting on Simson Schwalbe KR51/2 the rib, if it strikes the frame, should be cut off slightly oblique.
Note: Analogous to the original head when mounting on Simson Schwalbe KR51/2 the rib, if it strikes the frame, should be cut off slightly oblique.