1 PC Motorcycle Parts Cylinder Liner For CBR400 CBR23 CB-1 CB400 CBR CB 400 23 This cylinder liner is designed for use with specific motorcycle engine models.It serves as a replacement part for the engine's cylinder assembly, providing a bore for piston movement.The liner is engineered to fit compatible engine configurations and supports proper compression and engine performance.It is intended for use in rebuilding or repairing motorcycle engines where cylinder wear has occurred.Installation requires standard mechanical tools and knowledge of engine assembly procedures. This is a non-OEM replacement part.Any trademarks or model numbers cited are used strictly to demonstrate compatibility.