Model Name: M587-A092 Material: Aluminum Displacement: 50cc Bore Size: 38mm Pin Diameter: 12mm Compatibility: FitsS51, SR50, KR51, KR51/2 Schwalbe This 38mm Cylinder Piston Gasket Kit is designed for use with Simson S51, SR50, KR51, and KR51/2 Schwalbe models.The kit includes an aluminum cylinder, a 12mm steel piston pin, and a complete set of end gaskets.The piston features an anodized coating to enhance heat resistance and durability during regular. Installation requires no modifications, making it suitable for replacing worn components or upgrading engine performance.The 38mm bore size compatibility with standard configurations across various Simson models, including KR51, KR51/1 Schwalbe, KR51/2 Schwalbe, S50, S51, S53, and SR50. The included gaskets are constructed from materials to maintain a seal under normal riding conditions.Efficient heat dissipation helps keep engine temperatures stable, reducing the risk of overheating.This kit supports consistent engine function for everyday use on roads and light off-road environments. This is a compatible aftermarket part.References to brands or models do not imply OEM association.