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 85.50mm Piston is 85.42mm Made in Taiwan Fits 2000 Yamaha Kodiak 400 2x4 YFM400A 2000 Yamaha Kodiak 400 4x4 YFM400FA 2001 Yamaha Kodiak 400 2x4 YFM400A 2001 Yamaha Kodiak 400 4x4 YFM400FA 2002 Yamaha Kodiak 400 4x4 YFM400FA 2003 Yamaha Kodiak 400 2x4 YFM400A 2003 Yamaha Kodiak 400 4x4 YFM400FA 2004 Yamaha Kodiak 400 2x4 YFM400A 2004 Yamaha Kodiak 400 4x4 YFM400FA 2005 Yamaha Kodiak 400 4x4 YFM400FA 2006 Yamaha Kodiak 400 4x4 YFM400FA 2007 Yamaha Grizzly 400 4x4 YFM400G 2008 Yamaha Grizzly 400 4x4 YFM400G