6 Inch Lift Kit | 4-link | Ovld | M1 | Ford F-250/f-350 Super Duty 4wd (17-22)

Built for F-250/F-350 Super Duty owners who want maximum ground clearance and aggressive styling without sacrificing factory handling. This 6-inch 4-Link lift kit replaces your factory control arms with Rough Country's durable fixed upper arms and adjustable lower control arms, then adds lifted coil springs and fabricated anti-wrap rear blocks. You'll gain 6 inches of height, support tires up to 37 inches, and maintain proper caster geometry for the ride quality you expect from your truck.

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

What's included

• 6.5 In Block U-Bolt Kit — Overload blocks engineered to handle the load and prevent axle wrap while maintaining a smooth ride quality.
• Box Kit — Fabricated mounting brackets and hardware that anchor the coil springs and suspension geometry.
• 4.5–6in Up Arm Kit — Fixed upper control arms that maintain proper suspension geometry and caster angle.
• 4.5–6in Lower Arms — Adjustable lower control arms for fine-tuned caster correction and factory-like handling characteristics.
• Transfer Case Clocking Kit — Re-indexes the transfer case to accommodate the lifted ride without binding or interference.
• M1 Monotube Shock Absorbers (Pair) — Nitrogen-charged shocks tuned for balanced on and off-road performance.
• 6 Inch Coil Box — Lifted coil springs that provide the 6-inch height gain while working in harmony with the control arm geometry.

Important notes

• Fits F-250 Super Duty 4WD models only — does NOT fit F-350 models.
• Does NOT fit gas engine or diesel-manual transfer case variants.
• Does NOT fit dually models or vehicles equipped with 4" rear axle tubes.
• Does NOT fit models with the Tremor Factory Trim Package.
• Requires rear axle with factory contact overload springs.
• Kit replaces the factory lift block and requires new extended brake lines (included) and brake line brackets.

Why customers pick this at Road Runner

• Radius arm drop brackets maintain proper caster geometry — crucial for factory-like handling and driveability after the lift.
• Fabricated anti-wrap rear blocks are stronger and longer-lasting than cast alternatives, eliminating common lift-block issues.
• Professionally installed and aligned in-house — alignment performed as part of every lift installation.
• Backed by Rough Country's lifetime replacement warranty — we stand behind it locally.
• Transfer case re-indexing handled as part of the install — no binding, no surprises.
• M1 monotube shocks tuned for balanced performance on both highway and trail.

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