O.S Engines carburetor has a slide valve design insures greater response at the beginning and end of the power band for on-road racing. Three needle set-up, needle valve, mixture control screw, and throttle stop screw. Cast aluminum body with steel adjustment screws.
Requires: Installing on engine
Throat Diameter: 0.35" (9mm)
Air Cleaner Opening Diameter: 0.47" (12mm)