Manufactured by Namura Kit includes piston, rings, pin, clips, wrist pin 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 39.50mm Size B piston is 39.47mm Made in Taiwan Fits the following air cooled models 2002 KTM 50 Jr Adventure 2002 KTM 50 Mini Adventure 2002 KTM 50 Sr Adventure 2003 KTM 50 Jr Adventure 2003 KTM 50 Mini Adventure 2003 KTM 50 Sr Adventure 2004 KTM 50 Mini Adventure 2004 KTM 50 Sr Adventure 2005 KTM 50 Mini Adventure 2005 KTM 50 Sr Adventure 2006 KTM 50 Mini Adventure 2006 KTM 50 Sr Adventure 2007 KTM 50 Mini Adventure 2007 KTM 50 Sr Adventure 2008 KTM 50 Mini Adventure 2008 KTM 50 SX Mini