3 Inch Lift Kit w/ Radius Arm | FOX 2.5 Performance Elite Coil-Over Conversion | Ford F250/F350 Super Duty (20-22) 4WD | Diesel

Built for diesel Super Duty owners who demand premium on-road comfort and off-road capability — this 3-inch radius arm lift kit pairs heavy-duty tubular geometry correction with FOX 2.5 Performance Elite coil-over shocks to handle 35" tires while preserving factory driveline angles and steering response. You get a complete front-end overhaul, reinforced rear lift, and shocks tuned straight out of the box for both highway cruising and rough terrain abuse.

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 — Bolt-on diesel-spec shocks with remote reservoir, DSC adjusters (10 low-speed / 12 high-speed compression levels), and black anodized aluminum bodies for maximum cooling efficiency on pavement and trail.
• Heavy-Duty Tubular Radius Arms — Factory-location replacements with integrated caster adjustment across lift heights, plus OE-style rubber bushings for quiet, smooth operation.
• Adjustable Track Bar (1-3/8" solid steel) — Pre-assembled with bushings, ready to bolt in; recents the front axle at any lift height to maintain steering geometry and handling precision.
• Sway Bar Relocation & Brake Line Brackets — Factory-mount hardware relocated and secured for proper geometry preservation.

Out back

A high-strength fabricated 1-inch lift block, longer u-bolts, and a matching set of FOX Performance shocks round out the rear suspension. The block and bolt combo locks in consistent load capacity and ride height while the FOX shocks deliver the same performance tuning as up front.

Important notes

• Maximum tire clearance: 35 x 12.5 inches.
• Fits 2020–2022 Ford F-250 / F-350 Super Duty 4WD diesel models only (XL, XLT, Lariat, King Ranch, Platinum trims).
• Front lift: 3 inches via coil-over conversion; rear lift: 1 inch via block. Radius arms and track bar work together to maintain OE caster and steering angles at final ride height.
• This kit is designed for diesel powertrains and incorporates geometry specific to Super Duty driveline requirements.

Why customers pick this at Road Runner

• FOX Performance Elite shocks backed by BDS warranty — We service what we install, and our techs are factory-trained on every BDS suspension system.
• Geometry done right the first time — Radius arm caster correction and adjustable track bar keep your truck tracking true and handling like OE, not a hack job.
• Professional install in our shop — Our crew handles 3-inch lift kits on Super Duties every week; you're in and out fast.
• Diesel-specific tuning — This kit respects the weight and torque curve of your 6.7L engine without compromising driveline angles or transfer case centering.
• No surprises — Everything ships with you: coil-overs, radius arms, track bar, blocks, u-bolts, brackets. We bolt it down and send you home lifted.

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