READYLIFT | ZR2 AT4X 4" (4" +2") Big Lift Kit | 22-24 Chevrolet Silverado 1500 / 22-24 GMC Sierra 1500 | 44-32420

ReadyLIFT 2022-2024 Chevy/GMC 1500 ZR2 / AT4X 4" (4" +2") Big Lift Kit | 44-32420

Overview & Application Notes

4" (4" + 2") kit yields 6" of total lift with factory 2" lift and ReadyLIFT's 4" lift 

Delivers clearance for increased aftermarket tire sizes - up to 35x12.50 on 6-inch kit on 9" wide wheels with 0 offsets with no trimming -18 offset will require minor trimming.

The proprietary lower strut clamshell design maintains factory geometry and retains the use of the factory strut.

3/16-inch-thick steel plate cross members and skid plate.

Anti-torsion boxed and gusseted plate steel differential drop brackets.

Includes ReadyGuard Powertrain Warranty. 

NOTES: Use of Auto 4 Hi feature not recommended. Not compatible with rear mono-leaf springs.

NOTE: These will not fit late model 2024 or 2025 applications that have round U-bolts. Using the U-bolt part number 67-35150UB will allow this kit to fit 2025 applications.  

Product Details

Lifted truck customers are in the market for trucks that can handle tough terrain. Look no further than ReadyLIFT's new Leveling and Big Lift Kits engineered exclusively for the 2022-2024 Chevy Silverado 1500 ZR2 and GMC Sierra 1500 AT4X trucks. These two top-of-the-line kits provide an impressive lift, allowing for greater clearance and enhanced off-roading capabilities. But what sets ReadyLIFT apart from the competition? It's our relentless focus on ride quality combined with our strict adherence to quality standards and dedication to customer satisfaction. With ReadyLIFT, you don't just get a lift kit, you get peace of mind that your vehicle will excite and delight your senses (just don't taste it).

Leveraging one of our top-selling application designs for the AT4 and TrailBoss 1500 trucks, our engineers adapted the quality and features into the all-new AT4X and ZR2.  Forget squeaks, rattles, and vibrations; these lift kits ensure superior performance with smooth rides over all terrain. Designed to provide more ground clearance and increased flexibility on the street or trail, the big lift kits utilize boxed steel front/rear cross members and a full-width front skid plate constructed of thick 3/16" plate steel. New 1/4-inch boxed plate steel differential drop brackets feature a double gusset and boxed center rib to take the abuse of front differential torsional twisting on the big kits.  

Our Big lift kits feature heavy-duty angled and offset top mount strut extensions that realign the struts to optimize shock performance and minimize wear. A specially designed lower mount strut pre-load spacer offers the added benefit of a slight increase in spring rate to better manage unsprung mass resulting from the larger wheels and tires finding their way onto this newly lifted truck. To lift the rear, new fabricated steel rear blocks with integrated bump stop landings are added as well as new rear shock extensions to retain the factory performance shocks.

With thousands of engineering and development hours and more awesome features than we could possibly mention, these are the best lift kits available on 2022-2024 GM 1500 ZR2/ZT4X trucks!

NOTE: These will not fit late model 2024 or 2025 applications that have round U-bolts. Using U-bolt part number 67-35150UB will allow this kit to fit 2025 applications.  

Tire Fitment & Clearance

44-32420 4" Lift Kit - Recommended max tire with no trimming: 20x9 0 offset - 35x12.50 tire. *Max with trimming: 20x10 -18 offset - 35x12.50 or 325/60R20 *Trimming requirements for larger than recommended wheel/tire include front valance, front felt liner edge, rear felt liner edge and front rear well edge mud flap.

Wheel and tire combinations must be test-fitted. Tire construction, wheel offset and vehicle configuration can affect clearance and ride quality.

Kit Contents

Passenger Knuckle

Driver Fabricated Block

Pass. Fabricated Block 

Rear Brake Line Bracket

Rear ABS Bracket

CV Axle Spacer

Rear Shock Extensions

Rear Shock Extension Washers

Hardware pack

Installation Instructions

• ReadyLIFT installation guide (PDF)

Warranty

ReadyLIFT’s product warranty applies to the original purchaser and covers eligible missing or defective components. Wearable components, including shocks, ball joints, heim joints, bushings and steering extensions, are covered for up to one year. Off-road abuse is excluded; Jeep SST and Terrain Flex lift kits are covered for normal recreational off-road use. Discontinued, clearance and outlet products are excluded. Labour, installation and related fees are not refundable, and consequential vehicle damage is excluded. Coverage is subject to ReadyLIFT’s full terms: ReadyLIFT warranty terms