Developed for the BBR race team, this forged shaft is the strongest available on the market. A must-have for high-horsepower motors. Comes with a forged, high-strength 1st gear. The end oiling-hole has been eliminated and the shaft is grooved for proper oiling of 1st gear. 1st gear also rides on a bushing. BBR considers this to be the strongest design available. Forged for ultimate strength from proprietary steel alloy. Installs like O.E.M. parts.