PLEASE VERIFY FITMENT PRIOR TO PURCHASE! The piston is heat treated with a T-5 hardening and tempering cycle The piston skirt is coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston life Gravity-cast aluminum alloy (not forged) with 18% silicone content Cast OE replacement piston Top end kit includes piston, rings, pins, circlips, top end gaskets, and wrist pin bearing