11 Tooth Sprocket for Rotax Max Kart Engines. This sprocket requires a special bushing to be utilized, and threads into the main clutch drum with a small retainer pin to hold in place.
Note that for the 11-tooth drive sprocket, a steel or nylon bushing needs to be utilized between the drive sprocket and the crankshaft, as the standard needle bearing will be too large to fit the tight tolerances of the 11-tooth drive sprocket.