4" 2025-2026 GMC Sierra 1500 AT4X SST Lift Kit by ReadyLift

Unlock the full potential of your GMC Sierra 1500 AT4X with ReadyLIFT’s newest Big Lift Kit—specifically engineered to enhance performance, clearance, and off-road capability without sacrificing factory ride quality.

This advanced system combines the factory-installed 2-inch lift with ReadyLIFT’s premium 4-inch kit, delivering a commanding 6 inches of total lift. Whether you're hitting rocky trails or rolling through town with larger tires, this lift kit provides the aggressive stance and performance you demand—without compromise.

Top Features and Benefits:

• True 6-Inch Lift Height
  Combines ReadyLIFT’s 4” lift with GM’s factory 2” lift for a total of 6” of elevation—ideal for serious off-road performance and aggressive tire upgrades.
• Clears Up to 35" Tires
  Run 35x12.50 tires on 9" wide wheels with 0 offset—no trimming required. Minor trimming may be needed for -18 offset wheels.
• Factory Struts Retained
  Unique lower strut clamshell design maintains OEM geometry while preserving the use of your factory performance struts.
• Built Tough with Premium Materials
  Constructed with 3/16-inch-thick steel plate crossmembers and a full-width front skid plate for serious trail protection.
• Heavy-Duty Differential Drop Brackets
  Anti-torsion, boxed and gusseted steel brackets handle the added stress of aggressive off-road use and larger tire setups.
• Advanced Strut Extensions
  Angled and offset top mount strut spacers realign your suspension and reduce wear, while lower pre-load spacers help manage unsprung weight from oversized wheels.
• Rear-End Upgrades Included
  Fabricated steel lift blocks with integrated bump stop landings and rear shock extensions preserve ride quality and performance.
• Backed by ReadyGuard Powertrain Warranty
  Drive with confidence knowing your investment is protected with ReadyLIFT’s exclusive ReadyGuard Powertrain Warranty.