The Cast Piston Kits from Moose Racing have been created to provide longer piston life. To decrease thermal distortion, the piston is made with a gravity cast aluminum alloy with 18 percent silicon. The coated skirts ease break-in, decease wear, and aid in lubrication, while the wrist pins are coated providing a hardened wear resistant bearing surface. The piston rings are compatiable with OEM pistons, and each kit includes a piston, rings, wrist pin, and circlips. Each kit retails starting at $49.95.