The piston is heat-treated with a T-5 hardening and tempering cycleThe piston skirt is coated with a high-tech Molybdenum Disulphite coating for faster break in time and increased piston lifeGravity-cast aluminum alloy (not forged) with 18% silicone contentUnique cast GP-style race piston with only one compression ringPiston kit includes piston, ring, wrist pin and circlips