2019-2022 GMC AT4 And Chevy Trail Boss - 1.75'' Leveling Kit
QUICK OVERVIEW
1.75" front leveling lift for 2019-2022 GM AT4 and Trail Boss Not compatible with Sierra AT4X or Silverado ZR2 Edition. Includes DOM tube steel upper control arms with TCT maintenance-free pivot bushings and 1-ton ball joints CNC machined aircraft-grade billet aluminum top and bottom strut spacers 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 NO trimming!
DETAILS
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
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 NO trimming!
Tire Size Note: ReadyLIFT wheel and tire fitment recommendations are typically based on Wheel Pros wheels and Nitto tires. Due to product differences among tire manufacturers, tire specifications and dimensions including, but limited to, overall diameter, rolling diameter, tread width, aspect ratio, lug pattern, sidewall construction and inflation pressure, will vary meaningfully by tire and wheel manufacturer. Every tire and wheel combination should be test fit prior to installation. Consult your local installer to learn more about the right tire fitment for your application.
Ride Quality Note: When lifting a vehicle and installing aftermarket wheels and tires, a tire manufacturer's construction and material quality can alter vehicle ride quality. When increasing a vehicle wheel and tire size, most larger aftermarket truck and SUV tires are 10-ply (or more) E tires compared to typical OEM 6-ply C tires. This more rigid sidewall construction increases the perception of suspension stiffness often described as ride harshness. The ride, handling, traction, noise, fuel economy, and wear differences between All-Season, All-Terrain, Mud-Terrain, or Trail-Terrain type tires can be significant. Please take into account tire and wheel choice will generally have a meaningful impact on the ride & handling experience.
KIT COMPONENTS
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.
Inventory Status and Definitions
In-Stock - Item is in stock and ready for shipping. Please allow 5-7 business days for the order to be shipped. Orders are shipped in the order they are received.
Pre-Order - Pre-order items are new products. Items become available as "Pre-Order" when a batch is in the queue to be manufactured, allowing customers to order and reserve the product before it is ready to ship. Please allow 4-6 weeks, from when your order is placed, for the "Pre-Order" item to ship.
Backordered - Items will be marked as "Back-Order" when the item is out of stock, but is "in process" of being manufactured. Allowing customers to reserve an item before it is ready to ship. Please allow 2-3 weeks, from when your order is placed, for the "Backordered" item to ship. Some items listed as "Backordered" may be Built to Order. Please look at the item description.
Out of Stock - Item is not in stock and not available for purchase at this time. Typically, out of stock items come back in 1-2 weeks.
Built to Order - Item is placed in the build queue when order is received. Orders will be placed in the queue in the same order as they are received. Please allow 13-15 weeks for "Built to Order" items to be shipped. Holidays that fall during your lead time window, will extend the lead time.
Slider Steps - Slider Steps are Built to Order, as of 12/01/24. However, they have a lead time of 3-4 weeks from the day your order placed.
September 2024: Built to Order Status updated to 13-15 weeks for items to be shipped.
Holi-delays: The Holidays are here! Please expect delays with your orders. Once your package is shipped, we have no control on it's timing. We will do everything we can to get your items shipped in the above lead times. However, we enjoy time with our families during the holidays, just like you :) Thank you for your patience and support this year!