The piston is heat treated with a T-5 hardening and tempering cycle. The piston skirt is coated with high-tech Molybdenum Disulphite for faster break in time and increased piston life. The cast piston is 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.
