These ready-to-install replacement cylinder and piston kits are a cost effective way to rebuild an Evolution engine. The cylinders have fine grain centrifugal cast ductile steel liners that are securely cast into the aluminum cylinders and are honed to size. The top quality Genuine Zodiac pistons that come with the kit are precision ground, have a tin plated finish to facilitate break-in and come with a wrist pin. A set of Hastings rings are included for trouble free high mileage. Sold in sets of front and rear.