Motorcycle 54mm Air Cylinder Block Piston Rings Cylinder Gasket Kit For YZ125 2006-2022 1C3-11351-00-00 1C3-11311-00 This kit includes a 54mm air cylinder block, piston rings, and a cylinder gasket designed for use with YZ125 models from 2006 to 2022.The components are engineered to fit engines requiring part numbers 1C3-11351-00-00 and 1C3-11311-00.The cylinder block is constructed to support consistent engine performance with precise dimensions for proper piston movement.The included piston rings help maintain compression and reduce oil consumption.The cylinder gasket a secure seal between the cylinder and crankcase.This kit is intended for replacement or rebuild applications in two-stroke motorcycle engines. Compatibility Disclaimer: This is an aftermarket replacement part.Any brand names or model designations mentioned are used solely for the purpose of demonstrating compatibility.