HARLEY 1270cc Cylinder and Piston Conversion Kit Black Fits 2004-UP XL,

Big bore cylinder kit for 883-1270cc conversion on Sportster models and has a 10.1 compression ratio. Increase your horsepower with our V-Twin 1270cc big bore conversion kit. Our kit includes 2 black highlighter finished cylinders pistons and rings. Cylinders are pre-fitted with a forged piston set with moly rings ready to install. No machining necessary. The finish bore is 3.5995 inch to 3.6005 inch.MC forged pistons have teflon coated tops to aid in a more complete combustion. Final cylinder is done in our 6 position Rottlier honing machine. *NOTE: Includes inchdished inch piston set specifically for 883cc models. FITS HARLEY: 2004-UP XL,