ReadyLIFT 2019-2021 GMC AT4 and Chevy Trail Boss - 1.75'' Leveling Kit

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.

What's included:

• Heavy Duty tubular steel upper control arms with TCT maintenance free pivot bushings and heavy-duty 1-ton ball joints. CNC machined billet aluminum top and bottom mount strut spacers.

Tire fitment: Note: AT4 and Trail Boss do not fit the same size tire. This is due to the difference in front fender opening design. 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 If re-using factory wheels on a Trail Boss, you can run max tire size 285/75R18 with wheel spacers!