A perfect replica from the Keihin CV (Constant Vacuum) carburetor. All interior parts are the same quality items as we supply them from Cycle Pro. It also features Cycle Pro's upgraded slide spring for improved throttle response, their Super Flow emulsion tube as supplied with their EZ Quick Tuner kits and gives access to the idle mixture screw. Carburetor comes complete with a selection of main- and slow jets and instruction sheet to tune it for your model and year. Tuned engines may require the separate purchase of bigger jets.