High strength extended steering knuckles maintain OE geometry;Heavy duty one-piece front cross members include bump stop pads;PRO-M rear shocks and 4"" tall tapered lift blocks included;1"" front bumper spacers add clearance for 35"" tall tires on 18"" to 20"" rims with up to 5"" back spacing;Tested and certified FMVSS126 compliant to integrate seamlessly with the factory stability control system;Does not fit XD models;California Residents: WARNING