3.5 Inch Lift Kit | FOX 2.5 Performance Elite Coil-Over | Chevy Silverado / GMC Sierra 1500 (2025-26) 4WD | w/ FOX 2.5 Performance Elite Rear Shocks | BDS Suspension

This variant includes FOX 2.5 Performance Elite rear shocks. Featuring a 2.5-inch impact extruded aluminum body, a massive 7/8-inch hard chrome plated heat-treated alloy steel shaft, an external reservoir design that separates shock oil from high-pressure nitrogen, and a standard DSC Dual Speed Compression Adjuster. Fully serviceable for a lifetime of use. 1-year Manufacturer's Warranty.

Overview

This 3.5-inch lift kit for the 2025–2026 Chevy Silverado 1500 and GMC Sierra 1500 (4WD) is designed to improve stance, performance, and capability. The kit provides clearance for up to 35-inch tires (Chevrolet) or 33-inch tires (GMC). Up front, it includes FOX 2.5 Performance Elite Series remote reservoir coil-over shocks and heavy duty tubular upper control arms for increased strength. In the rear, fabricated steel lift blocks and longer U-bolts raise the vehicle, paired with a complementary set of rear shocks for a smooth ride.

The FOX 2.5 Performance Elite coil-overs are tuned and ready to install out of the box. Built with a 2.5-inch diameter body, these shocks include a remote reservoir for additional fluid capacity to keep shocks running cool under demanding conditions. The DSC (Dual Speed Compression) adjuster provides 10 separate low-speed and 12 high-speed compression levels with a simple twist of either adjuster knob, delivering precise tuning for any terrain. The reservoir features a black anodized aluminum finish for increased cooling efficiency.

The BDS HD upper control arms use 1.5-inch OD x .120-wall tubular construction with an indexed ball joint cup to correct ball joint positioning, allowing additional down travel and camber adjustment. Durometer-specific rubber bushings at the frame mounting ends provide maintenance-free operation, while greaseable ball joints at the outer end ensure smooth, quiet operation and superior durability. Arms are finished in a durable black powder coat with a billet aluminum dust cap.

Features

• Builds off factory suspension geometry for improved performance with straightforward installation
• 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
• BDS HD upper control arms for strength and increased suspension travel
• High misalignment angle, greaseable heavy duty ball joints
• Rubber control arm bushings for long life and maintenance-free operation
• Rear lift block kit to produce a level to slightly tail-high stance
• 1/4-inch wheel spacer included for use with the spare tire if needed
• Optional weld-on steering stops to help tire clearance to fenders, control arms, etc. (dependent upon wheel offset selected)
• Factory Protection Plus included

Specifications

• Lift Height: 3.5 inches
• Front Shocks: FOX 2.5 Performance Elite remote reservoir coil-overs
• FOX 2.5 coil-over body: 2.5-inch impact extruded aluminum
• FOX 2.5 shaft: 7/8-inch hard chrome plated, heat-treated alloy steel
• DSC Dual Speed Compression Adjuster: 10 low-speed / 12 high-speed compression levels
• External reservoir: separates shock oil from high-pressure nitrogen; black anodized aluminum
• Upper control arm tubing: 1.5-inch OD x .120-wall tubular steel construction
• Upper control arm finish: durable black powder coat with billet aluminum dust cap
• Rear: fabricated steel lift blocks with longer U-bolts
• Tire clearance: up to 35 inches (Chevrolet) / up to 33 inches (GMC)

Installation

• Estimated Time: 4–5 hours
• Difficulty: Moderate
• Tools Required: Cut Off Wheel or equivalent, Ball Joint Separation Tool, Welding Equipment

Important Notes

If equipped with a mono-leaf rear spring, please use part #UBT4064.