SPI, SM-09256-2, 020 Over Bore Piston Kit for Polaris 550 Snowmobiles Standard Bore 73.50mm

Draws heat through piston walls and out the bottom Reduces heat and friction, for added power and longevity Helps eliminate cold seizures, and increases durability Hard anodized crowns Hypereutectic CastYou may also like SPI, SU-04303S, Front Track Gas Shock Absorber for Arctic Cat Snowmobile Replaces OEM# 1704-351.