This kit has not been test fitted on Silverado ZR2 or Sierra AT4X models at this time; While it's not necessary on all vehicles, some tire/wheel combinations have tight clearance to the factory control arms. To resolve this Zone Offroad includes a pair of optional weld-on steering stop extensions that can be installed on the lower control arm to limit steering slightly; Stock Wheel and Tires will require ¼” wheel spacers. (Tight to upper ball joint and arm when turning); 2022 Models: This system has not been tested on models equipped with Super Cruise; Will fit ARC (Adaptive Ride Controlled) Equipped Trucks; Tire and Wheel Fitment: 295/70R17 - Stock Wheel; 295/65R18 - Stock Wheel; 295/60R20 - Stock Wheel; 285/60R20 5" Backspacing
