Cylinder KitKits include aluminum cylinder with nickel-carbide coating designed with larger water jacketsForged piston with molybdenum coatingSpecial gasket kitEasy-to-follow step-by-step installation instructionsAll are bolt-on; no machining requiredBig Bore Cylinder Kit With Head Ø 47,6 mm, 70 cc, Pin Ø 12 mm, Flat Head Piston