One is a 7-inch kit, shown here and above, and the other is a 4.5-inch kit. BDS says that they're designed for daily driving and just about any off-highway excursion you can think of. Each kit includes heavy-duty main crossmembers that are locked together by a full belly pan that offers superior off-road protection. CNC-machined steering knuckles ensure a clean and simple install. Each of these kits include the BDS "No Fine Print Warranty."