Piston Kit - 43.46 mm - Yamaha

Gravity cast aluminum alloy with 18% silicon to increase resistance to wear and decrease thermal distortion, thus providing a longer piston life. Wrist pin is nitride-coated, providing a hardened, wear-resistant bearing surface. Coated skirt ease break-in, decreasing wear and aiding in lubrication. OE replacement with OE compression ratio. Replacement rings are sold individually. Wear-resistant piston rings. Piston kit includes piston, rings, wrist pin and circlips.