77mm Cylinder Piston Top End Rebuild Kit for Yamaha 01-13 YZ250F WR250 YZ 250FFeatures: If your cylinder blows through, the compression is too low, or even a piston seizure has occurred, then this kit is exactly the right thing for you. Kit includes cylinder, forged piston, rings, pin, clips & top end gasket kit (you get exactly what is pictured). Nickel Silicon Carbide plated for long life. Piston is anodized for superior heat resistance and longer lifespan. The gaskets use performance materials to increase durability and