ReadyLIFT 1.5" Billet Leveling Kit w/ ARC Brackets | 2019–2025 GMC Denali & Chevy High Country 1500

ReadyLIFT 1.5" Billet Leveling Kit w/ ARC Brackets | 2019–2025 GMC Denali & Chevy High Country 1500

Is This for You?
You're running a 2019–2025 GMC Sierra 1500 Denali or Chevy Silverado 1500 High Country equipped with Adaptive Ride Control — and every generic leveling kit on the market either ignores the ARC sensor architecture entirely or forces you to disable the system. The ReadyLIFT 66-39151 is the purpose-built ARC solution: the same CNC-machined 6061-T6 billet aluminum upper strut spacers as the 66-39150, plus dedicated ARC repositioning brackets for the upper control arm mounting point that allow the Adaptive Ride Control system to perform perfectly once leveled.

The Result
Two CNC-machined 6061-T6 aircraft-grade billet aluminum upper strut extensions with four longer installation bolts and nuts deliver 1.5" of front leveling lift via a top-mount design that eliminates CV boot contact risk during installation. New ARC arm mounting point brackets reposition the ARC sensor connection on the upper control arm to maintain full Adaptive Ride Control system functionality at the new ride height — no system compromise, no warning lights. The result clears a 33x11.50 on a 20x9 0-offset wheel with minor felt liner trimming on some applications. Some wheels may require a 6mm or greater spacer to clear the brake caliper.

Verified Fitment (OFAS Standard)
✅ Fits: 2019–2025 GMC Sierra 1500 Denali (ARC equipped, new body style, 2WD and 4WD)
✅ Fits: 2019–2025 Chevrolet Silverado 1500 High Country (ARC equipped, new body style, 2WD and 4WD)
❌ Does NOT fit: GM 1500 trucks without Adaptive Ride Control — see 66-39150 for standard suspension
❌ Does NOT fit: Chevy Trail Boss or GMC AT4 / AT4X suspension
❌ Does NOT fit: 2019 Limited (old body style)
❌ Does NOT fit: Super Cruise equipped vehicles
❌ Note: Minor trimming of felt liner may be required on some applications
❌ Note: Some wheels may require a 6mm or greater wheel spacer to clear the brake caliper

Wheel & Tire Fitment
Maximum tire size: 33x11.50 on a 20x9 0-offset wheel. Minor trimming of the felt liner may be required on some applications. Some wheels may require a 6mm or greater wheel spacer to clear the brake caliper — verify caliper clearance before finalizing wheel selection. ReadyLIFT wheel and tire fitment recommendations are based on Wheel Pros wheels and Nitto tires. Actual dimensions vary meaningfully by manufacturer — overall diameter, tread width, aspect ratio, and sidewall construction will differ. Every tire and wheel combination must be test fit prior to final installation. Upgrading to heavier 10-ply (Load Range E) all-terrain or mud-terrain tires will noticeably increase suspension stiffness and alter ride harshness compared to factory 6-ply (Load Range C) tires. Consult your local installer for application-specific guidance.

Installation & Engineering Notes
This is a bolt-on upper strut spacer kit requiring no cutting or welding. ARC repositioning brackets must be installed correctly to maintain full Adaptive Ride Control system functionality — do not omit. A professional 4-wheel alignment is mandatory post-installation. Lifting your vehicle raises its center of gravity; exercise appropriate caution on- and off-road. All Advanced Driver Assistance Systems (ADAS) including GM Safety Alert Seat, Lane Keep Assist, Forward Collision Alert, and automatic headlight leveling must be checked and recalibrated after installation. This kit is not compatible with Super Cruise — do not install on Super Cruise equipped vehicles.

Engineering Question: Is your 2019–2025 Denali or High Country confirmed to have Adaptive Ride Control (ARC), and is it the new body style (not the 2019 Limited old body)? ARC is standard on Denali and High Country but confirm your build sheet before ordering — trucks without ARC should use the 66-39150 instead.