2025-2026 GM 1500 4" Big Lift Kit (44-35400)

2025-2026 GM 1500 4" Big Lift Kit (44-35400)The ReadyLIFT 4 4. 2 inch Big Lift Kit is engineered exclusively for the 2025 Chevy Silverado 1500 ZR2 and GMC Sierra 1500 AT4X trucks, designed to provide more ground clearance and enhanced off roading capabilities while retaining the factory performance shocks (DSSV Multimatic). Because these trucks come with a factory 2 inch lift, this 4 inch lift kit results in a total lift of 6 inches. Utilizing boxed steel cross members and a full width front

The ReadyLIFT 4/4.2-inch Big Lift Kit is engineered exclusively for the 2025 Chevy Silverado 1500 ZR2 and GMC Sierra 1500 AT4X trucks, designed to provide more ground clearance and enhanced off-roading capabilities while retaining the factory performance shocks (DSSV/Multimatic). Because these trucks come with a factory 2-inch lift, this 4-inch lift kit results in a total lift of 6 inches. Utilizing boxed steel cross members and a full-width front skid plate, the kit ensures superior performance with smooth rides over all terrain and maintains excellent ride quality.

Features

• Provides a total lift of 6 inches (4 inches from the kit plus the factory 2-inch lift).
• Maintains the factory ride quality and retains the factory DSSV/Multimatic performance shocks.
• Includes heavy-duty angled and offset top mount strut extensions that realign the struts to optimize shock performance.
• Features a proprietary lower strut clamshell design that maintains factory geometry and retains the use of the factory strut.
• Utilizes boxed steel front and rear cross members and a full-width front skid plate constructed of thick 3/16-inch plate steel.
• Comes with 1/4-inch boxed plate steel differential drop brackets designed to take the abuse of front differential torsional twisting.
• Includes new fabricated steel rear blocks with integrated bump stop landings and rear shock extensions.
• Backed by the ReadyGuard Powertrain Warranty.

Notes

• Use of the Auto 4 Hi feature is not recommended.
• Vehicle alignment and headlamp aim must be checked and adjusted after product installation.
• If the vehicle is equipped with Advanced Driver Assistance Systems (ADAS), these systems may require recalibration.
  

Compatibility Notes

• Engineered exclusively for 2025 Chevy Silverado 1500 ZR2 and GMC Sierra 1500 AT4X trucks.
• The kit is intended for use with factory upper control arms.
• Not compatible with rear composite mono-leaf springs.

Tire Fitment

• Recommended maximum tire with no trimming is 35x12.50 on a 20x9 wheel with 0 offset.
• With trimming, fitment is possible for up to 35x12.50 or 325/60R20 tires on a wheel with -18 offset.
• Trimming requirements include the front valance, front felt liner edge, rear felt liner edge, and front rear well edge mud flap.

Specs

• Lift Height: 4 inches (total 6 inches including factory lift).
  
• Cross Member Material: 3/16-inch plate steel.
  
• Differential Drop Material: 1/4-inch boxed plate steel.
  
• Kit Contents: Front/Rear Cross Members, Front Skid Plate, Lift Knuckles, Strut Extensions, Rear Shock Extensions, Differential Drop Brackets, Fabricated Rear Blocks, CV Axle Spacers, Brake Line Brackets, ABS Brackets, and installation hardware.