Manufactured by Namura Kit includes piston, rings, pin, clips, bearing 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 standard bore size 40.00mm Piston is 39.96mm Made in Taiwan Fits 2001 Polaris Scrambler 50 2002 Polaris Scrambler 50 2003 Polaris Scrambler 50 2004 Polaris Predator 50 2005 Polaris Predator 50 2006 Polaris Predator 50