Manufactured by Namura Kit includes piston, rings, pin, clips, top end gasket kit you get exactly what is pictured Cast piston has super-high silicone content for additional strength Piston skirts are Molybdenium Teflon coated to minimize resistance/wear and provide extended life Piston dome is anodized for superior heat resistance and longer lifespan Namura gaskets use performance materials to increase durability and provide greater reliability Includes all gaskets pictured to rebuild top end Kit is for .040 over bore size 96.00mm Piston is 95.93mm Made in Taiwan Fits 1998 Yamaha Grizzly 600 4x4 YFM600FW 1999 Yamaha Grizzly 600 4x4 YFM600FW 2000 Yamaha Grizzly 600 4x4 YFM600F 2001 Yamaha Grizzly 600 4x4 YFM600F