Manufactured by Namura Kit Includes piston, rings, pin, clips (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 Kit is for standard bore size - 39.50mm Size B piston is 39.47mm Made in Taiwan Fits: 2002 - 2005 KTM 50 SX Pro Jr L/C 2002 - 2005 KTM 50 SX Pro Sr L/C 2002 - 2003 KTM 50 Jr Adventure 2002 - 2007 KTM 50 Sr Adventure 2002 - 2007 KTM 50 Mini Adventure 2006 - 2008 KTM 50 SX 2006 - 2008 KTM 50 SX Junior 2008 KTM 50 SX Mini