Breaking parts in your Duramax sucks!! Even when its something as small as a sway bar endlink. These sway bar end links are a Heavy Duty replacement of the factory style end links which are notorious for breaking. The Kryptonite end links utilize a lower clevis system which takes some of the angle off of the link when the suspension is cycling. Minimizing stress that can cause breakage. Measuring at 11" hole to hole, these are used on trucks with 4-6" of suspension lift. They allow some extra clearance for the Kryptonite larger diameter tie-rod upgrade.