Rear shock option: FOX 2.0 Performance Series. Features a 2-inch impact extruded aluminum body, internal floating piston (IFP) monotube design, CNC machined 6061-T6 aluminum mounting ends, large 5/8-inch hard chrome plated heat-treated alloy steel shaft, race-developed high-flow piston design, application-specific valving, and a long-lasting clear anodized finish.
Overview
This 1.5-inch lift kit for the Chevy Trail Boss and GMC AT4 1500 (2019–2024) 4WD is designed to improve stance, performance, and capability. The kit includes FOX 2.5 Performance Elite Series remote reservoir coil-over shocks and heavy duty tubular upper control arms up front, and fabricated steel lift blocks, longer U-bolts, and rear shocks in the back. The kit provides clearance for up to 35-inch tires on Chevy models or up to 33-inch tires on GMC models and installs as a 100% bolt-on solution.
The FOX 2.5 Performance Elite coil-overs feature a 2.5-inch diameter body with a remote reservoir for additional fluid capacity, a DSC (Dual Speed Compression) adjuster offering 10 separate low-speed and 12 high-speed compression levels, and a black anodized aluminum reservoir for increased cooling efficiency. The heavy duty upper control arms use 1.5-inch OD x .120-wall tubular construction with an indexed ball joint cup, durometer-specific rubber bushings at the frame mounting ends, and greaseable ball joints at the wheel end. Arms are finished in a durable black powder coat with a billet aluminum dust cap.
Features
- FOX 2.5 Performance Elite coil-overs offer improved damper performance over stock
- DSC Adjuster allows easy high-speed and low-speed compression tuning for optimal performance in any terrain
- Performance upper control arms (UCAs) increase strength and allow for more suspension travel
- FOX rear shocks included (see variant options for specific rear shock configuration)
- Factory Protection Plus drivetrain warranty included
- Easy, 100% bolt-on installation
Specifications
- Lift height: 1.5 inches
- Front shocks: FOX 2.5 Performance Elite Series remote reservoir coil-overs
- Front shock body: 2.5-inch impact extruded aluminum
- Front shock shaft: 7/8-inch hard chrome plated heat-treated alloy steel
- DSC Dual Speed Compression Adjuster: 10 low-speed and 12 high-speed compression levels
- UCA construction: 1.5-inch OD x .120-wall tubular steel, black powder coat finish
- UCA bushings: Durometer-specific rubber (frame end); greaseable ball joints (wheel end)
- Rear lift: Fabricated steel lift blocks with longer U-bolts
- Tire clearance: Up to 35 inches (Chevy Trail Boss) / Up to 33 inches (GMC AT4)
- FOX 2.5 Performance Elite shocks: 1-year manufacturer's warranty; fully serviceable
Installation
- Estimated installation time: 4–5 hours
- Difficulty: Moderate
- Tools required: Cut-off wheel or equivalent, ball joint separation tool, welding equipment
Important Notes
- Requires a maximum of 5.5-inch backspacing (BS) wheel for tire clearance to the upper ball joint.
- All aftermarket wheels should be test fit prior to mounting the tire to ensure proper clearance to the brake caliper. Some wheel profiles will not clear the brake caliper. These can be test fitted before the vehicle is lifted in a stock condition.
- Will NOT fit models with a single leaf spring (monoleaf) rear suspension.
