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. Why Use a Forging? Experts Agree That a Forged Shaft, of Identical Material, Will Be Stronger Than a Cast or MacHined Shaft (Billet). The Reason Is That the Grain of the Material Is Aligned With the Shape of the Shaft With a Forging. On a MacHined Shaft, Unidirectional Grain Flow Has Been Cut When Changing Contour, Exposing Grain Ends. This Renders the Material More Liable to Fatigue and More Sensitive to Stress Corrosion Cracking. 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. BBR Recommends That You Use This in Combination With Their D-Comp Camshaft for the Best Results.