The ReadyLIFT 6" (6" + 2") Big Lift Kit (PN 44-35600) is engineered specifically for 2025–2026 Chevrolet Silverado 1500 ZR2 and GMC Sierra 1500 AT4X trucks. The system adds 6 inches of lift to the factory 2-inch lift, resulting in approximately 8 inches of total lift.

Designed to increase ground clearance and accommodate larger aftermarket tires, the system retains the factory front struts and rear performance shocks. Heavy-duty angled and offset front strut extensions help maintain proper strut positioning, while lower strut preload spacers provide additional support for larger wheels and tires.

The system includes tubular steel upper control arms with maintenance-free pivot bushings and 1-ton ball joints, boxed steel front and rear crossmembers, a full-width 3/16-inch steel skid plate, and reinforced differential drop brackets. Fabricated rear blocks, an add-a-leaf kit, and rear shock extensions complete the rear suspension system.

Features

• 6" (6" + 2") kit yields 8" of total lift with factory 2" lift and ReadyLIFT"™s 6" lift
• Delivers clearance for increased aftermarket tire sizes - up to 37x12.50 on 6-inch kit on 9" wide wheels with 0 off-sets with no trimming -18 off-set will require minor trimming.
• The proprietary lower strut clamshell design maintains factory geometry and retains the use of the factory strut.
• Tube steel upper control arms with maintenance-free pivot bushings and 1-ton ball joints. (6" kit only)
• 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.
  

Refer to the tire fitment guide along with the year make model data. Tire fitments shown are for Maximum size and based on a no rub or no modifications required fitment. ReadyLIFT & Recon Recovery is not responsible if the listed max sizes are exceeded. Due to differences in manufacturing, dimension and inflated measurements, tire and wheel combinations should be test fit prior to installation.

Fitment

• 2025–2026 Chevrolet Silverado 1500 ZR2
  • Lift: 6.0" | Total Lift With Factory Lift: 8.0" | Max Tire: 37x12.50" | Wheel Size: 20x9" | Offset: 0 | Trimming: None
• 2025–2026 GMC Sierra 1500 AT4X
  • Lift: 6.0" | Total Lift With Factory Lift: 8.0" | Max Tire: 37x12.50" | Wheel Size: 20x9" | Offset: 0 | Trimming: None
    

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

Specifications

• Fitment: Direct Fitment
• Front or Rear: Front and Rear
• Front Lift Height: 6 Inches
• Front Lift Component: Coil Spring Spacer
• Rear Lift Height: 5 Inches
• Rear Lift Component: Block and U-bolt
• Max Tire Size: 37 Inch
• Installation Time: 5+ Hours
• Install Difficulty: Difficult Requires Professional Installation
• Color: Black
• Country of Origin: US

Warranty

READYLIFT® “NO HASSLE” PRODUCT WARRANTY

This unique “no hassle” product warranty proves their 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, they'll give you a new part.

Any ReadyLIFT products containing missing or defective components will be covered under warranty by ReadyLIFT. Please contact Recon Recovery to initiate a warranty claim. 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 complement the Jeep vehicle's off-road capability. All Jeep Lift Kit products are covered under warranty when used in recreational off-road environments.

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.

WARNING: This product can expose you to chemicals including Di(2-ethylhexyl)phthalate (DEHP), which is known to the State of California to cause cancer, and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov/product.