3.5-Inch Component Box with Upper Control Arms, Silverado & Sierra

3.5-Inch Component Box with Upper Control Arms, Silverado & Sierra, fitment-checked

Notable for its trim coverage: the Sierra 1500 list here includes AT4 and AT4X, which are off-road trims that many lift kits exclude. Upper control arms are in the box; shocks are not.

The AT4 and AT4X leave the factory with their own suspension tuning and are often ruled out of aftermarket lift ranges, so seeing them on this fitment is worth noting. The box carries 3.5 in. of lift hardware with upper control arms, supplied against part number C19350. Coverage is the 2019-2023 Silverado 1500 in Custom, Custom Trail Boss and High Country and the 2019-2022 Sierra 1500 in Denali, AT4 and AT4X. 39.4 lb boxed. Shocks are a separate order.