4 Inch Lift Kit | Chevy Trail Boss or GMC AT4 1500 (19-26) 4WD | Gas

Built for Trail Boss and AT4 owners who want maximum ground clearance without sacrificing ride quality. This 4-inch lift kit transforms your 2019–2026 Chevrolet Silverado or GMC Sierra 1500 4WD, gaining real off-road capability while keeping the truck drivable every day. Engineered specifically for gas-powered models, it preserves your truck's geometry and handling.

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

• Front coil springs — engineered to handle the 4-inch lift while maintaining proper load support and axle geometry.
• Caster correction brackets — preserve steering feel and suspension geometry so your truck drives true.
• Front shock package — paired to your choice of damping (see shock options below).

Out back

Rear leaf springs support the lift with matched spring rates. Includes rear shocks tuned to match your front choice, ensuring balanced performance across all four corners.

Pick your shocks

• BDS NX2 Nitro Series — smooth, capable daily driver damping that soaks up rough roads without complaint. A natural choice if you want a 4-inch lift that feels factory-smooth.
• FOX 2.0 Performance Series — faster-responding valving and DSC adjusters for firmer control on rock and rut. Pick this if you run rougher terrain or want confidence in aggressive off-road moves.

Important notes

• This kit is engineered for gas-powered 2019–2026 Silverado 1500 and Sierra 1500 4WD Trail Boss and AT4 models only. Do not install on diesel engines or other trim levels.
• Maximum tire clearance is approximately 33 inches with factory wheels and no rubbing at full articulation and turn.
• Factory wheel backspacing and offset must be maintained; wheels with more negative offset may interfere with suspension travel.
• Transfer case re-indexing is required to correct driveshaft geometry and prevent vibration.
• Some factory options — including integrated locking differentials and factory air suspension — may require modification; confirm with our team before ordering if your truck has these features.

Why customers pick this at Road Runner

• Corrected geometry out of the box — caster brackets and transfer case re-indexing are included, not sold as add-ons.
• BDS warranty backed locally — we stand behind every kit we install and service them ourselves.
• Installed by suspension pros — our techs do Trail Boss and AT4 lifts every single week; they know exactly what each truck needs.
• Professional install in our shop for most kits — get your truck lifted and home by end of business.

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