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ReadyLift Suspension 1.75 Inch Leveling Kit - 66-3921
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.

Features:
  • 1.75" front leveling lift
  • 1ton ball joints
  • AT4 Max tire size: 275/6020
  • AT4 Max wheel size: 20x9 with 0 offset
  • CNC machined aircraftgrade billet Aluminum top and bottom strut spacers
  • Compatible with 20192023 GM AT4 and Trail Boss models
  • Includes DOM tube steel upper control arms
  • Not compatible with Sierra AT4X or Silverado ZR2 Edition
  • TCT maintenancefree pivot bushings
  • Trail Boss Max tire size: 295/6520
  • Trail Boss Max wheel size: 20x9 with 0 offset


Fitment:
  • Chevrolet Silverado 1500 LT Trail Boss 2019-2024
  • GMC Sierra 1500 AT4 2019-2024


Notes:

  • AT4 and Trail Boss do not fit the same size tire. This is due to the difference in front fender opening design.
  • 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
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ReadyLift Suspension Banner

Who is ReadyLIFT?

ReadyLIFT is an aftermarket company that was founded in 2006. They specialize in creating a suspension leveling system that allows its users to control the height of their vehicle. This enables them to install larger size wheels. Today, their brand has been chosen by enthusiasts who prefer having a more gas-friendly option for lifting vehicles.

Customizing Shouldn’t Always be Expensive

ReadyLIFT provides its customer with a more cost-effective way of customizing their trucks or SUVs. Their products allow its user to have the same benefit of using a big lift kit without compromising its drivability and handling performance.

Continuous Company Growth

The company was later on acquired by Wheel Pros who is considered the leading marketer, designer, and distributor of top-quality aftermarket wheels and automotive accessories. This helped the company expand and gained resources that would enable them to further improve their products.

The company has a reputation for providing high-quality products that are affordable to everyone. Their products are designed to give your vehicle a better-looking stance by allowing you to install modern-looking wheels in bigger sizes.

Purchase ReadLIFT products at Vivid Racing

If you are in search of an alternative way to improve your vehicle’s look, then ReadyLIFT is the brand for you. It helps you stand out among the sea of custom trucks and SUVs while maintaining its driving comfort. This essentially makes your vehicle a cool-looking daily driver. They have parts for a variety of vehicle brands such as Toyota, Ford, GMC, Subaru, and more. Visit Vivid Racing and check out their list of products that fit your specific needs.





READYLIFT "NO HASSLE" PRODUCT WARRANTY

This unique "no hassle" product warranty proves our commitment to the quality of every product that ReadyLIFT produces. ReadyLIFT product warranty only extends to the Original Purchaser of any ReadyLIFT product. If it breaks, we will give you a new part.

READYLIFT "NO HASSLE" WARRANTY PROCEDURES

Any ReadyLIFT products containing missing or defective components will be covered under warranty by ReadyLIFT. Please call 800-549-4620 to initiate a warranty claim. Rest assured our customer service team will urgently address the matter and expedite the replacement parts. In the event of a defective product, ReadyLIFT may request a return of the defective product (at ReadyLIFT expense) so the quality team can analyze the nature of the defect. Returning defective product will not delay the replacement part delivery.

ReadyLIFT leveling kit, block kits and lift kit products are NOT intended for off-road abuse. Any abuse or damage as a result of off-road use voids the warranty of the ReadyLIFT product. Exception: ReadyLIFT Jeep SST and Terrain Flex Lift Kits are designed for normal off-road use to compliment the Jeep vehicle's off-road capability. All Jeep Lift Kit products are covered under warranty when used in recreational off-road environments.

Warranty does not apply to discontinued, clearance or outlet products. Wearable components including, but not limited to, shocks, ball joints, heim joints, bushings, and steering extensions, are covered for up to 1-year. Labor, installation, surcharges or any other applicable fees from the original purchase are non-refundable. ReadyLIFT is not responsible for any consequential damage to vehicles.

ReadyLIFT reserves the right to change, modify, or cancel this warranty without prior notice.
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Things
Sale price None
Wholesale price $406.47
Shipping Weight: 25.00
Length: 16
Width: 12
Height: 6
Product Added At Saturday 03 October, 2020
Product Modified At Tuesday 17 June, 2025
Imported By ETLOverride
Last Edited By kathI@vividracing.com
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Vendor Inv Cost Retail Jobber MAP Core Updated
Wheel Pros $344.47 $529.95 ? ? ? 2025-06-17 15:54:00


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