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 .020 over bore size 85.50mm Piston size is 85.47mm Made in Taiwan Fits 1996 Honda XR400R 1997 Honda XR400R 1998 Honda XR400R 1999 Honda XR400R 2000 Honda XR400R 2001 Honda XR400R 2002 Honda XR400R 2003 Honda XR400R 2004 Honda XR400R