This lift kit utilizes the very best in ReadyLIFT engineering with boxed steel front/rear cross members and 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.Our 4" lift kit features heavy-duty angled and offset top mount strut extensions that realigns 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 handle the larger wheels and tires that will find their way onto this new lifted truck. To lift the rear, new fabricated steel rear blocks with integrated bump stop landings have been added as well as new rear shock extensions.With months of engineering and development and more awesome features than we could possibly mention, the bottom line is this new Big Lift Kit is the best 4" lift kit you can install on a new body style 2025-2026 GM 1500 4WD truck!

Thousands of miles of road and trail testing have proven our new 4" lift kit makes these new GM 1500 trucks ride better than stock! Wheel and tire fitment information: 6" Lift Kit - Recommended max tire with no trimming: 20x9 0 offset - 35x12.50 tire. *Max with trimming: 20x10 -18 offset - 35x12.50 or 326/60R20 *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.

Features

• ReadyLIFT now off-ers an all-new 4" Big Lift Kit for the 2025-2026 Chevy Silverado Trail Boss and GMC AT4 1500 trucks engineered for incredible ride quality and superior handling performance. 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 — 2WD/4WD
  • Lift: 4.0" | Max Tire: 35" x 11.5" (295/65R20) | Wheel Width: 9" | Backspacing: 4.5" | Offset: 0
• 2025-2026 GMC Sierra 1500 — 2WD/4WD

• Note: Use of Auto 4 Hi feature not recommended. Not compatible with rear mono-leaf springs. Single Cab configuration has not been validated for fitment & drivability by ReadyLIFT. Not for use on Diesel motor applications.
• Note: Do not recommend an 18" wheel due to fitment issues. A 18x9 with 0mm off-set or high-er does not work.

Specifications

• Fitment: Direct Fitment
• Front or Rear: Front and Rear
• Front Lift Height: 4 Inches
• Front Lift Component: Coil Spring Spacer
• Rear Lift Height: 3 Inches
• Rear Lift Component: Block and U-bolt
• Max Tire Size: 35 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.