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 100.20mm Piston is 100.15mm Made in Taiwan Fits 2003 Polaris Predator 500 2004 Polaris Predator 500 2005 Polaris Predator 500 2006 Polaris Outlaw 500 2006 Polaris Predator 500 2007 Polaris Outlaw 500 2007 Polaris Predator 500