Brian Crower billet cranks are CNC machined on state-of-the-art mills from round bar, premium 4340 chromoly steel to ensure the strongest possible shaft available. Each Brian Crower crankshaft is nitrided for added longevity and feature large radius journals for added strength at high horsepower. Each and every Brian Crower Crankshaft is 100% inspected to a tolerance of .02mm. All Brian Crower crankshafts are machined on the latest CNC equipment to guarantee accuracy, reliability and overall consistency. When you purchase a Brian Crower crankshaft, you can be assured it was made with the finest steel alloy, employing only the best machining, heat treating and finishing procedures, in stock at a very affordable price.