Flying Horse 2 Stroke/4 Stroke Motorized Bicycle 36 Tooth Rear Sprocket Replacement &ndash; Gas Bike Sprocket Upgrade INCREASED TOP SPEED: The Flying Horse 36 tooth rear motorized bicycle sprocket was designed with speed in mind. With 12 less teeth than standard sprockets this sprocket drastically changes your gear ratio for hitting this high speeds. This sprocket will have you cruising at high speeds without straining your engine and over revving. MUST HAVE FOR RACE ENGINES: If you have a carburetor, expansion chamber and other performance parts but can't seem to get any more speed from your engine then look no further. This sprocket will help you get the full potential from all the upgrades you install on your engine. EASY INSTALLATION: Installation is a breeze, just remove your old sprocket and bolt on your new 32 tooth sprocket. It's that simple! UNIVERSAL FIT: Designed to fit most standard two stroke and four stroke motorized bicycle engine kits using a 415 chain. PACKAGE INCLUDES: 1x Flying Horse Motorized Bicycle 36 Tooth Rear Sprocket