You need a piston that balances light weight with strength, and this cast replica delivers both. Gravity cast from aluminum alloy with 18% silicone content, it gives you a durable replacement that keeps your engine running strong. Features Molybdenum Disulphide coating on the skirt speeds break-in and extends piston life Gravity cast aluminum alloy with 18% silicone content creates a light yet strong structure T-5 heat treatment cycle hardens and tempers the piston for long-term durability Complete kit includes piston, rings, wrist pin and circlips for a full rebuild