3 Inch Lift Kit | FOX Coilover Conversion | Chevy Silverado or GMC Sierra 2500HD/3500HD (20-26) Diesel | 4WD

Built for diesel truck owners who want 3 inches of lift, 35-inch tire clearance, and FOX coilover performance without compromising geometry. This BDS suspension kit replaces your factory torsion bars with a complete FOX coilover conversion — front and rear — engineered to nail stance, off-road capability, and on-road handling all at once. You get heavy-duty upper and lower control arms, differential relocation brackets that preserve CV angles, and your choice of FOX 2.0 or 2.5 Performance Elite shocks tuned for desert rocks or daily driving.

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 Coilovers — Remote reservoir design keeps fluid cool during aggressive terrain, with DSC (dual-speed compression) adjusters to dial in high-speed and low-speed damping independently.
• Heavy-duty tubular upper control arms — 1.5" OD x .120-wall construction with indexed ball joint cup for correct geometry and maximum down-travel, finished in black powder coat.
• Fully boxed lower control arms — High-strength steel, internally gusseted, with greaseable ball joints and maintenance-free rubber bushings at the frame.
• Differential relocation brackets — Multipiece fabrication that maintains correct CV angles and driveline geometry through the lift.
• Sway bar links and complete hardware — Everything needed for a bolt-on install without cutting, drilling, or rework.

Out back

Rear lift comes via your choice of block height — with or without the factory overload springs — paired with a U-bolt flip kit for max clearance. You'll run FOX 2.0 Performance Series or 2.5 Performance Elite 2.5" shocks tuned to keep load capacity and ride quality intact while soaking up rough terrain.

Pick your shocks

• FOX 2.0 Performance Series — Solid all-around performer for mixed on-road and light off-road use, tuned for comfort and reliability.
• FOX 2.5 Performance Elite — Race-proven remote-reservoir design with DSC adjusters, built to handle aggressive terrain and extended travel without fade.

Important notes

• Maximum tire size is 35 x 12.5. Oversizing beyond this will compromise suspension geometry and clearance.
• Rear lift configuration options: choose block kit with factory overload springs (recommended for towing and load capacity), block kit without overload, or no block if you prefer stock ride height in the rear.
• FOX Performance Elite shocks come with DSC adjustment knobs and a remote reservoir — plan for hose routing and reservoir mounting during install.
• Kit corrects caster and suspension geometry through the new control arm design and differential relocation — do not deviate from component specifications.
• Greaseable ball joints on lower control arms; inspect and service annually for longevity.

Why customers pick this at Road Runner

• FOX coilover shocks backed by BDS engineering — not a universal bolt-on, but a platform-specific conversion with geometry correction built in.
• Mount and balance available by technicians who set these kits up multiple times per week on 2500 and 3500 HD trucks.
• Full BDS warranty honored on-site, no mail-in hassle.
• Complete kit eliminates guesswork — no mystery hardware, no missing brackets, everything engineered to work together.
• Geometry correction means your truck drives straight and predictable, not fighting the steering or wearing tires unevenly.

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