Manufactured by 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 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 – 66.40mm Size C piston is 66.37mm Compatible with Kawasaki models below: 1993 – 2003 KX250