4 Inch Lift Kit | Chevy Silverado Trail Boss / GMC Sierra AT4 1500 (2019-2024) 4WD | Strut Spacer w/ FOX Adventure Series Rear Shocks | Zone Offroad

This configuration pairs an OE-style front strut spacer with FOX 2.0 Adventure Series rear shocks. The FOX 2.0 shocks feature a nitrogen-charged twin-tube design with 10-stage velocity-sensitive valving, dual-welded ends, self-lubricating seals, a 2-inch diameter steel body, and a black powder coat finish for long-lasting durability.

Overview

This 4-inch lift kit from Zone Offroad is engineered for the Chevy Silverado Trail Boss and GMC Sierra AT4 1500 (2019–2024) 4WD. The system delivers improved off-road capability while maintaining on-road comfort, and includes high-strength crossmembers, new steering knuckles, differential relocation brackets, and Adventure Series upper control arms to optimize suspension geometry and driveline angles. The kit is available in multiple front and rear shock configurations to suit different ride quality preferences, and supports fitment of up to 37-inch tires.

Features

• Maintains on-road handling while improving off-road performance
• Heavy-duty crossmembers and skid plates for undercarriage protection
• New steering knuckles add strength and maintain ESC system compatibility
• Top-mounted front strut spacer retains factory ride quality
• Adventure Series upper control arms for additional strength and improved suspension geometry
• Supports fitment of 35–37-inch tires

Specifications

• Front Lift Method: Cross Member & Strut Spacer
• Front Lift Height: 4 inches
• Rear Lift Method: Block
• Rear Lift Height: 3 inches
• Shocks Included: Yes

Installation

• Estimated Time: 8 hours
• Difficulty: Difficult

Important Notes

• All aftermarket wheels should be test fit prior to mounting the tire to ensure proper clearance to the brake caliper.
• Requires frame bracket modification.
• Some wheel profiles will not clear the brake caliper. These can be test fitted before the vehicle is lifted in a stock condition.
• Fits Gas and Diesel Models.
• Will not fit Adaptive Ride Control (ARC) equipped models.
• 2022 Models: This system has not been tested on models equipped with Super Cruise.
• 17-inch wheels with 4.5-inch backspacing should be test fit prior to mounting the tire to ensure proper clearance to the steering knuckle/tie rod.
• Factory 17-inch and 18-inch wheels cannot be reinstalled due to tie rod end interference; stock 20-inch wheels can be reinstalled.
• Tire and wheel fitment guidelines:
  • 33 x 12.50 on 17x8, 17x9 w/ 4.5" BS
  • 33 x 12.50 on 20x9, 22x9 w/ 4.5–6.25" BS
  • 35 x 12.50 on 20x9, 22x9 w/ 5.5–6.25" BS
  • 37 x 12.50 on 20x9, 22x9 w/ 5.5" BS
  • 295/65 on 17x8, 17x9 w/ 4.5" BS
  • 295/60 on 20x9 w/ 4.5–6.25" BS