Adjustable accelerator pump for quick throttle response and easy starting

Easy to install with the hinged style mount

to your personal preference

9/16" bore for single disc and 11/16" bore for dual disc applications

mcs cv40 motorcycle carburetor 2OM Adjustable accelerator pump for quickMCS 40mm Motorcycle CV Carburetor This 40mm CV carburetor is a high quality reproduction of the Keihin Constant Vacuum with an accelerator pump, ideal for various stock and custom V Twin applications. It comes equipped with a 185 main jet and a 45 slow jet, and is designed for vacuum operated petcocks, lacking a floatbowl overflow system. This model is compatible with most parts from the original equipment manufacturer, except for the throttle cable