Carburetor Rebuild Kit. The All Balls Racing Carburetor Rebuild Kit includes all of the necessary components to repair or rebuild your carburetor. Kit includes all O-rings, gaskets, jets (see note), needle (see note), mixture screw, float bowl screws, float valve needle and seat. O.E.M. jet sizes are included in the kit and kits are based off of U.S. models and discretion should be used when installing kit on non-U.S. models. 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. ATV models with two carburetors include components to repair two carburetors. Off-road use only.