102mm Big Bore Kit 686 Cylinder Top End Rebuild For Yamaha Grizzly YFM 660 02-08Features: 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, piston, rings, pin, clips & top end gasket kit (you get exactly what is pictured). Piston is anodized for superior heat resistance and longer lifespan. The gaskets use performance materials to increase durability and provide greater reliability. This is a bolt on kit with