It's pretty good. There is about 6000 miles on it and I can still torque my lug nuts with both wheels in the air. I don't do much in the way of burnouts or anything. It's there more for diff protection and future power adding. I don't go testing it on every corner either. I got it from here: Engineered Performance It did take 8 months of badgering him in order to finally get it. He does make a good product. Just takes for ever.