ReadyLIFT 6" Big Lift Kit - 2019-2024 Chevy Silverado High Country / GMC Sierra Denali 1500 with ARC

The ReadyLIFT 6" Big Lift Kit (part 44-39615) is built for new-body 2019-2024 Chevy Silverado High Country and GMC Sierra Denali 1500 4WD trucks with Adaptive Ride Control (ARC). It is engineered for ride quality and handling while keeping full operation of the factory ARC system.

Part number: ReadyLIFT 44-39615

Key features

• 6" of lift with room for 35x12.50 tires on 20x9 0 offset wheels with no trimming
• Boxed steel front and rear crossmembers and a full-width 3/16" plate steel front skid plate
• 1/4" boxed plate steel differential drop brackets with double gussets and a boxed center rib
• Angled and offset top-mount strut extensions realign the struts for shock performance and less wear
• Lower-mount strut pre-load spacer adds a slight increase in spring rate for larger wheels and tires
• 5" fabricated steel rear blocks with integrated bump stop landings, plus rear shock extensions that keep the factory ARC rear shocks working
• Heavy-duty cast iron lift knuckles retain factory-quality geometry
• Includes ReadyGuard Powertrain Warranty

What's included

• Heavy-duty front and rear crossmembers and skid plate
• Heavy-duty top-mount strut extensions and rear shock extensions
• Sway bar drop brackets
• Heavy-duty fabricated steel rear lift blocks with bump stop landings
• Heavy-duty cast iron lift knuckles
• All necessary hardware and instructions

Fitment

• 2019-2024 Chevy Silverado 1500 High Country and GMC Sierra 1500 Denali 4WD with Adaptive Ride Control (ARC)
• Only compatible with ARC-equipped vehicles
• Not compatible with rear composite mono-leaf springs (round U-bolts); requires traditional steel leaf springs with square U-bolts
• Late-model 2024 or 2025 trucks with round U-bolts need ReadyLIFT U-bolt kit 67-35150UB, per ReadyLIFT
• Single cab not validated for fitment and drivability by ReadyLIFT
• Use of the Auto 4 Hi feature is not recommended

Tire fitment

• 35x12.50 maximum with no trimming on 20x9 wheels with 0 offset
• 35x12.50 or 325/60R20 maximum with trimming on 20x10 wheels with -18 offset (trim front valance, front and rear felt liner edges, and front-rear well edge mud flap)
• ReadyLIFT bases its wheel and tire recommendations on specific wheel and tire brands, and sizes vary by manufacturer, so test-fit every wheel and tire combination before installation.

Install notes

• Estimated installation time: 10 hours +/- 1 hour (excludes alignment and wheel/tire assembly).
• Read the instructions completely before starting. ReadyLIFT recommends installation by a certified mechanic.

Questions about fitment? Email [email protected] with your year, make, model, and trim before ordering.