72MM Cylinder kits Piston Rings set For GY6 250cc Engine Parts Moped Scooter This cylinder kit includes a 72mm cylinder, piston, and piston rings designed for use with GY6 250cc engines.It is compatible with various moped and scooter models utilizing this engine type.The components are engineered to replace worn or damaged parts to help restore engine performance.The piston rings provide proper compression and oil control within the cylinder bore.Installation requires standard mechanical tools and knowledge of small engine assembly.This set is intended for use in two-stroke or four-stroke applications where GY6 engine configurations are found.