Zipper’s new black-finish S&S E/G carburetors, with or without a ThunderJet installed, in stock and ready to ship. The jet-black finish completely alters the look, and performance is enhanced with a +.100” venturi bore increase and the addition of the ThunderJet third fuel circuit. You can purchase a black carb-only to upgrade your existing S&S-equipped bike or a complete kit with a black carburetor included – a Zipper’s exclusive!