Take your Chevy Trail Boss / GMC AT4 to new heights with this 4" lift kit from Zone Offroad. This kit nets 4" over stock, so due to the 2" factory lift will sit similar to a standard truck with 6" of lift. Kits include everything needed from high strength crossmembers and steering knuckles to strut spacers, upper control arms and differential relocation brackets to maintain driveline angles. Get the look, performance, and capability your truck deserves with clearance for up to 35" tires.