2.5 Inch Lift Kit | FOX 2.5 Performance Elite Coil-Over | Chevy Trail Boss or GMC AT4 1500 (25-26) 4WD | Diesel

Built for Chevy Trail Boss and GMC AT4 owners who want genuine offroad capability with refined on-road manners — this 2.5-inch lift kit pairs BDS geometry correction with FOX Performance Elite coil-over shocks to deliver 35-inch tire clearance and suspension travel that handles rocky terrain and highway driving in the same day.

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

• FOX 2.5 Performance Elite coil-over shocks — remote-reservoir design with 10 low-speed and 12 high-speed compression levels via dual DSC adjusters; anodized aluminum body for cooling efficiency under sustained abuse.
• Upper control arms — 1.5" OD tubular construction with indexed ball joint cups to correct geometry at the taller ride height, greaseable joints for durability.
• High-clearance crossmembers — 1/4-inch thick laser-cut steel with integrated front skid plate system for offroad protection and ground clearance.
• Steering knuckles & tie rods — CNC-machined ductile iron knuckles and replacement tie rods preserve ESC system compatibility while correcting caster at lift height.
• Sway bar drops, brake line brackets, CV spacers, bump stop extensions — everything bolted and ready to preserve driveline geometry and brake function.

Out back

Heavy-duty lift block (replaces stock block) paired with new u-bolts, brake line brackets, and FOX 2.0 Performance Series shocks tuned for load capacity and offroad compliance in one package.

Pick your shocks

• FOX 2.0 Performance Series — proven comfort and control at $4,547.85; pairs with the front FOX Elite kit for cohesive tuning across all four corners.
• FOX 2.5 Performance Elite — race-bred remote reservoir with dual-range compression adjusters at $5,527.90; maximum terrain adaptability and cooling capacity for serious offroad use.

Important notes

• Kit clears up to 35-inch tires with factory wheel offsets; backspacing and offset changes may reduce clearance — confirm before tire purchase.
• ESC (electronic stability control) remains functional with supplied steering geometry correction parts; no recalibration required.
• Rear block installation retains factory load capacity and ride quality; do not exceed OEM GVWR.
• CV spacers and driveshaft-drop brackets preserve stock driveline angles; inspect u-joint wear after installation if towing heavy loads.
• Not compatible with air suspension or factory load-leveling systems on AT4 trims; standard coil trucks only.

Why customers pick this at Road Runner

• BDS geometry correction engineered specifically for Trail Boss and AT4 — caster, camber, and tie-rod length are dialed in before it leaves the shop.
• FOX shocks professionally installed and bench-tested by technicians who fit these every week — no guesswork, no shortcuts.
• BDS warranty backed locally; any defect gets handled same-day at our facility.
• One-day install means your truck is capable by tomorrow — not weeks of downtime.

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