Cylinder Piston Gasket Head End Kit for 660R YFM660R 2001-2005 660 YXR660 102MM This kit includes a cylinder, piston, gasket set, and head components designed to fit 660R YFM660R models from 2001 to 2005, as well as 660 YXR660 with a 102mm bore size.The components are engineered for compatibility with standard engine configurations and provide a complete solution for end rebuilds.The piston is sized to match the specified bore diameter, and the gasket set covers all necessary seals for proper assembly.Designed for straightforward installation, this kit supports engine performance restoration when replacing worn or damaged parts.