SKU: 21114668264

1.75 Inch Leveling Kit 2019-2025 Silverado/Sierra AT4 And Trail Boss ReadyLIFT

Sale price$238.48 Regular price$264.98
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Ships within 48 hours · Estimated delivery Jul 25 - Jul 30

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Description

1.75 Inch Leveling Kit 2019-2025 Silverado/Sierra AT4 And Trail Boss ReadyLIFTReadyLIFT 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 Inch front lift. This front lift includes a longer front shock strut assembly. When combining a traditional leveling kit on these factory

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-Inch 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-Inch 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

Features and Benefits:

  • 1.75-Inch front leveling lift
  • Compatible with 2019-2023 GM at4 and Trail Boss models
  • Not compatible with Sierra AT4X or Silverado ZR2 Edition
  • Includes DOM tube steel upper control arms
  • TCT maintenance-free pivot bushings
  • 1-ton ball joints
  • CNC machined aircraftgrade billet Aluminum top and bottom strut spacers
  • AT4 Max tire size: 275/6020
  • AT4 Max wheel size: 20x9 with 0 offset
  • Trail Boss Max tire size: 295/6520
  • Trail Boss Max wheel size: 20x9 with 0 offset
  • At4 at4 Max tire size: 275/6020
  • At4 at4 Max wheel size: 20x9 with 0 offset

Details:

  • Fitment: Direct Fitment
  • Front Lift Component: Spacer
  • Front Lift Height: 1.75 Inch
  • Front or Rear: Front
  • Install Difficulty: Difficult Requires Professional Installation
  • Installation Time: 4 Hours
  • Lift Height: 1.75 Inch
  • Max Tire Size: 295
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 21114668264

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Angela C
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★★★★★ 5
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Color: Navy Blue
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Reviewed in the United States on April 30, 2026
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arisa
Lake Worth, US
★★★★★ 4
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Color: Dark Cherry
Case is fine and good quality but the keyboard doesn’t work as intended. Bluetooth connects great but the keyboard is formatted incorrectly. For example, when I try to use a dash, it puts an apostrophe instead. I have no idea how to reformat it myself. I’d love just a replacement keyboard
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Reviewed in the United States on January 31, 2026
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Mia Thacker
San Leandro, US
★★★★★ 5
Worth it!
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Great buy! Worth the money and the color is nice. The keyboard works, some buttons I haven’t figured out but for the most part it’s worth the purchase!
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Reviewed in the United States on May 20, 2026
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Ms Rene Butts
Louisville, US
★★★★★ 5
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This was a perfect choice for my iPad. The color is very vibrant easy to put on and its sturdy will buy again in another color.
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Phoenix, US
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