All Precision Gears are computer-controlled forgings, forged out of 8620 steel, fully automated turning, single pass cut, and then vacuum heat treated. The sum of these processes is the ultimate aftermarket gear. This is a high performance quiet gear, perfect for any vehicle, stock and beyond. It will handle the rigors of big tires or high horse power. There is not another aftermarket supplier that comes close to the quality that is offered by Precision Gear. Backed with a 5 year warranty. Check our Tech section for more info on Precision VS. The competition.