ReadyLift Leveling Kit 1.75" for 2019-2024 AT4/Trail Boss (66-3921)

Product Description

ReadyLIFT customers have asked for it and we have delivered. In fall of 2018 we announced our new leveling and SST lift kit offerings for the all-new GM 1500 trucks. We specifically did not include the factory lift kit-equipped GMC AT4 and Chevy Silverado Trail Boss. The AT4/Trail Boss are factory equipped with a 2" front lift. This front lift includes a longer front shock/strut assembly. When combining a traditional leveling kit on these factory lifted trucks, several issues present themselves including binding problems with the factory control arm ball joint and contact concerns with the lower strut/CV axle assembly. The ReadyLIFT 66-3921 1.75" leveling kit is similar to our popular 66-3086 leveling kit for pre-2019 trucks. The 66-3921 leveling kit provides required amount of lift without causing conflict with the factory strut geometry and clearances. In light of the factory upper control arm's lack of dynamic range when the AT4/Trail Boss truck is further lifted, this leveling kit includes our popular tubular upper control arms with corrected ball joint cup angles, heavy-duty replaceable ball joints and out new Terrain Control Technology (TCT) maintenance-free pivot bushings with side-biter washers to improve alignment retention. Note: AT4 and Trail Boss do not fit the same size tire. This is due to the difference in front fender opening design. NOTE: Not compatible with Sierra AT4X or Silverado ZR2 Edition. 66-3921 Leveling Kit: AT4 - Max tire 275/60-20, 20x9 0 offset wheel Trail Boss - Max tire 295/65-20, 20x9 0 offset wheel.

Product Documents

Product Warranty

Product Brand Information

ReadyLIFT® Suspension Inc. was founded in 2006 on the principles of developing a line of economical yet innovative suspension leveling products that would allow Truck and SUV owners to be able to “level” their vehicles in order to install Plus-size wheels and tires. ReadyLIFT realized that there was a huge consumer market that didn’t want a big lift kit that would compromise fuel economy along with the factory ride and handling. The original ReadyLIFT line of suspension products was developed to provide consumers with a cost-effective alternative for their needs, essentially designing the exact product they were looking for – clearance for bigger wheels and tires, an improved ‘leveled’ stance, and that “factory” ride & handling. Today, ReadyLIFT Suspension is the #1 preferred manufacturer of truck and SUV Suspension from Leveling Kits, SST Mid-Level Lift Kits, and Complete Big Lift Kit Suspension Systems. Guaranteed to retain your factory ride while providing the looks and lift every vehicle owner wants. Kits feature our Top Mount Strut Extensions, Forged Torsion Bar Keys, OEM Style Lift Blocks, Mild Lift Kits, Full Off-Road Suspension Systems, and more! ReadyLIFT kits give you room to run larger tires, increase ground clearance, providing a better stance all while retaining or improving the factory ride quality. Guaranteed to be the most superior products on the market! ReadyLIFT offers three main types of lifts. Leveling kits, SST Mid Height Lift Kits, and complete big lift suspension kits.