6 Inch Lift Kit | Radius Arm | M1 | Ford F-250/f-350 Super Duty 4wd (23-26)

Built for Ford Super Duty owners who want maximum tire clearance without sacrificing factory ride quality, this 6-inch radius arm lift kit gives your truck a commanding stance while preserving driveline geometry. Run up to 37-inch tires and enjoy the smooth, balanced performance that comes from tubular radius arms engineered to maintain proper caster angles — the secret to keeping your truck handling like it came from the factory.

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-inch Radius Arm Kit — Tubular design bolts directly to factory mounts, preserving suspension geometry and proper caster for factory-like handling.
• Radius Arm Upgrades (Driver & Passenger) — Precision-fit components with durable rubber bushings that maximize vibration absorption and durability.
• 6.5-inch Block U-Bolt Kit — Specially designed anti-axle wrap rear blocks maintain stock ride quality while strengthening the suspension.
• M1 Monotube Shock Pair (Front) — Application-valved shocks tuned for balanced on- and off-road performance.
• M1 Monotube Shock Pair (Rear) — Matched rear shocks for consistent damping across the suspension.
• 6-inch Coil Box — Fabricated coil spring spacers offer superior strength and longevity compared to cast alternatives.

Important notes

• Does not fit manual shift transfer cases or dually models.
• Not compatible with the Tremor Factory Trim Package.
• Installation requires cutting and drilling; plan 6–10 hours for completion.
• Tire range is 35–37 inches; exceeding this may affect geometry and ride quality.

Why customers pick this at Road Runner

• Tubular radius arms engineered to preserve factory caster angles — your truck handles like it should, even lifted.
• Rough Country's lifetime replacement warranty backed by local service — we stand behind every install.
• Alignment performed in-house as part of every lift install — geometry dialed in the day you drive off.
• Our techs perform these kits weekly — no guesswork, no comebacks, just proven execution.
• M1 Monotube shocks tuned specifically for this truck — balanced comfort and control on pavement and trail.

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