4 Inch Lift Kit | FOX 2.5 Performance Elite Coil-Over | Chevy Trail Boss or GMC AT4 1500 (19-26) 4WD | Gas

Built for Trail Boss and AT4 owners who want maximum tire clearance without compromise. This 4-inch lift kit pairs BDS coil-over geometry with FOX 2.5 Performance Elite shocks to deliver serious off-road capability while keeping your driveline angles true. You get more ground clearance, room for bigger rubber, and suspension that handles both rock crawling and highway cruising.

Installed and serviced at Road Runner Wheels & Tires. Most kits go in the same day. Call (678) 400-6467 to schedule.

What you get up front

• BDS coil-over struts — engineered for the Trail Boss and AT4 platform to maintain factory caster correction and prevent wandering on the highway.
• Upper control arms — longer geometry to keep suspension angles in the sweet spot as you lift.
• Sway bar links and brackets — repositioned to work with your new ride height.
• Bump stops — revised to match the extra travel and prevent binding.

Out back

Rear leaf springs are re-rated to support the front lift without sagging. BDS adds shackles and hangers tuned for the 4-inch package, keeping your truck level and stable under load.

Pick your shocks

• FOX 2.0 Performance Series — smooth ride quality and controlled damping for daily driving and light trails. Great value for owners who don't push hard every weekend.
• FOX 2.5 Performance Elite — dual-speed compression and rebound tuning, larger reservoir, and DSC (Dual Speed Compression) adjusters. Built for aggressive terrain, high-speed whoops, and repeat impact absorption.

Important notes

• Fits 2019–2026 Chevy Silverado 1500 Trail Boss and GMC Sierra 1500 AT4 — gas engines only.
• Maximum tire clearance is 35 inches without trimming; some fender rolling may open up room for 37s depending on wheel offset.
• Factory wheel offsets must be verified — aggressive backspacing can cause rubbing at full articulation.
• Vehicles equipped with factory air suspension are not compatible with this kit.
• Rear driveshaft may require slight re-indexing or shortening; BDS supplies guidance.

Why customers pick this at Road Runner

• BDS warranty backed by local techs — we install these kits weekly and stand behind every job.
• Caster geometry preserved — no wandering, no excessive tire wear, highway-stable from day one.
• FOX shocks professionally tuned — our team knows the valving inside and out and can dial in pressure for your weight and terrain.
• Mount and balance available — most kits are buttoned up before you leave, with a full walkaround and test drive.

Ready to build it? Call (678) 400-6467. Hablamos Español.