All Balls Racing Carburetor Repair Kit For Harley Sportster Features: Kits include all the necessary components to repair a carburetor Models with multiple carburetors include components to repair all carburetors Kit includes all necessary o-rings, gaskets, jets, needle, mixture screw, float bowl screws, float valve needle and seat. (Needle jet and other pressed in jets are not included in kit) OEM jet sizes and slide needles are included in the kit Harley kits contain jetting selection, extended fuel mixture screw, intake gaskets, and manifold gaskets NBR rubber material is used on all O-rings and rubber gaskets NBR has excellent resistance to the ethanol used in today's fuels Applications that use paper float bowl gaskets are upgraded to High Performance Interface Gasket material Components included in the kits are based off of US models and discretion must be used when attempting to install the kit on a non-US model