The ReadyLIFT 6" Big Lift Kit for 2019-2024 Chevy Silverado and GMC Sierra 1500 trucks features Falcon 1.1 Monotube Shocks for improved ride quality and handling, excluding Trail Boss, ZR2, or AT4/AT4X models. The kit, 44-39605, boasts boxed steel front/rear cross members and a 3/16" plate steel skid plate. It includes 1/4-inch steel differential drop brackets with double gusset and center rib for differential torsional resistance. The kit's top mount strut extensions are angled and offset, aligning struts for optimal shock performance and reduced wear, while a lower mount strut pre-load spacer slightly increases spring rate for larger wheels and tires.
The rear is lifted with 5" fabricated steel blocks with bump stop landings and Falcon 1.1 Monotube rear shocks. Tested for over 9 months, it offers superior ride quality over stock. Maximum recommended tire size is 20x9 0 offset with 35x12.50 tire without trimming, and 20x10 -18 offset with 35x12.50 or 325/60R20 with trimming. Trimming includes front valance, felt liner edges, and mud flap.
Not suitable for Auto 4 Hi, Adaptive Ride Control, Multimatic vehicles, or trucks with composite mono-leaf springs. Compatible only with traditional steel leaf springs. Features include maintained factory ride and handling, clearance for up to 35" tires on 6-inch kits, factory geometry retention with top mount strut extensions, 3/16-inch steel plate cross members and skid plate, anti-torsion differential drop brackets, and fabricated steel rear lift blocks. Includes Falcon rear shocks and ReadyGuard Powertrain Warranty.
Features
- 2019-2024 model years
- 1500 4WD
- 6" lift kit
- Maintains factory ride and handling
- Provides clearance for increased aftermarket tire sizes (up to 35" on 6inch kit on 9" wide wheels with 0 off-set with no trimming)
- Top mount strut extensions maintain factory geometry and retain use of the factory strut
- 3/16inch thick steel plate cross members and skid plate
- Antitorsion boxed and gusseted plate steel differential drop brackets
- Fabricated steel 5" rear lift blocks include integrated bump stop landings, off-set pin, and proper pinion angle
- Includes premium Falcon 1.1
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
- 2019-2024 Chevrolet Silverado 1500 — 2WD/4WD
- Lift: 6.0" | Max Tire: 35" x 12.5" (325/60R20) | Wheel Width: 9" | Backspacing: 4.5" | Offset: -12
- 2019-2024 GMC Sierra 1500 — 2WD/4WD
Specifications
- Fitment: Direct Fitment
- Front or Rear: Front and Rear
- Front Lift Height: 6 Inches
- Front Lift Component: Spacer
- Rear Lift Height: 6 Inches
- Rear Lift Component: Block
- Rear Shocks: Falcon 1.1 Monotube
- Max Tire Size: 35 Inch
- Installation Time: 5+ Hours
- Install Difficulty: Difficult Requires Professional Installation
- 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.
Leveling Kits
Level out your truck or SUV with ReadyLift leveling kits. Engineered to eliminate factory rake, these premium-grade kits raise the front end to match the rear — giving you a balanced stance and room for larger tires. Available for most years, makes, and models.
SST Lift Kits
The original mid-lift solution for trucks, Jeeps, and SUVs. ReadyLift SST Lift Kits are built for drivers who want more than a leveling kit but aren't ready for a full big lift — delivering added height and tire clearance with factory-quality ride and handling.
Big Lift Kits
Run larger tires and give your vehicle an aggressive look with ReadyLift Big Lift Kits. Engineered for maximum height without sacrificing factory ride quality, these complete systems deliver serious clearance while keeping handling and steering geometry in check.
SHOP ALL Readylift Products
ReadyLift builds premium leveling, mid-lift, and big lift kits for trucks, Jeeps, and SUVs — engineered to add height and tire clearance without giving up factory ride quality.