Includes main and pilot jets, jet needle sets, float valves, float chamber gaskets and O-rings (jets included in each kit are for common sizes; according to riding conditions and riding preference, different size jets may be used). Award-winning rubber-top float valves are made using highest quality rubber and a plated body for resistance to harsh gas, ethanol and methanol. Each complete kit rebuilds OEM carburetors to achieve optimum performance. Includes idle screw sets, pilot screw sets and air screw sets also included if applicable.