Motorcycle Cylinder Kit Piston Set for Simson S51 38MM Cylinder Piston Gasket kit This cylinder kit is designed for use with Simson S51 motorcycles and includes a 38mm cylinder, piston, and gasket set.The components are engineered to fit standard Simson S51 engine configurations, providing a complete replacement solution for engine rebuilds or performance.The piston is machined for consistent compression and smooth within the cylinder bore.The included gasket set ensures proper sealing between engine components during assembly.This kit supports engine performance and is suitable for routine maintenance or restoration projects.