The Cylinder Exchange Program gives you a top-end for your engine, ready to bolt on. If your sleeve(s) is damaged or your current bore is beyond the max service limit - don't worry, we resleeve at no-charge. It also includes cylinders, all new SBT pistons, rings, wrist pins, c-clips, base gaskets, head/head cover gaskets/o-rings, intake and exhaust gaskets. Rebuildable core cylinders required for exchange.