Super E CarburetorSuper E Carburetor Want to put a legend on the side of your bike? We don't blame you. Four fuel delivery ports for better fuel flow O ring sealed idle mixture screw Increased air flow for more power Adjustable accelerator pump for quick throttle response and easy starting Can use the factory dual cable system ensures safe operation Variable position enrichment starting system Has 1 7 8" throat at the butterfly and a 9 16" venturi; recommended for use