REFERENCE PICTURES FOR FITMENT 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 Unique cast GP-style race piston with only one compression ring Piston kit includes piston, rings, wrist pin and circlips