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 2001 KTM 50 SX Pro Sr LC 2002 KTM 50 SX Pro Junior LC 2002 KTM 50 SX Pro Sr LC 2003 KTM 50 SX Pro Junior LC 2003 KTM 50 SX Pro Sr LC 2004 KTM 50 SX Pro Junior LC 2004 KTM 50 SX Pro Sr LC 2005 KTM 50 SX Pro Junior LC 2005 KTM 50 SX Pro Sr LC 2006 KTM 50 SX LC 2006 KTM 50 SX Junior LC 2007 KTM 50 SX LC 2007 KTM 50 SX Junior LC 2008 KTM 50 SX LC 2008 KTM 50 SX Junior LC