6 Inch Lift Kit | Gas | Radius Arm | C/o V2 | Ford F-250/f-350 Super Duty (05-07)

Built for first-generation Super Duty owners who want maximum ground clearance without sacrificing ride quality, this 6-inch Radius Arm Coilover Conversion Lift Kit delivers a total suspension transformation. You'll gain the height to run 35–37 inch tires while Rough Country's precision-engineered radius arms—paired with adjustable Vertex 2.5-inch coilovers—preserve factory suspension geometry and smooth ride feel.

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

• Kit Box (05-07 Super Duty) — Main structural and mounting components for your model year.
• Coilover Conversion Box — Replaces factory independent coil-shock setup with the coilover mounting infrastructure.
• Heavy-Duty Radius Arm Upgrade (qty 2) — 27-lb each, precision-fit to factory mounts with durable rubber bushings for vibration absorption and preserved suspension angles.
• Add-A-Leaf — Reinforces rear leaf-spring package for load-carrying capacity.
• 3-Inch Fabricated Blocks & U-Bolt Kit — Stronger, longer-lasting rear blocks (cast blocks prone to failure) with hardware to secure the lift height at the rear axle.
• Vertex 2.5-Inch Adjustable Coilovers (front pair) — Nitrogen-charged, 8-stage adjustable monotube design with external reservoir (56% greater fluid capacity than average shocks) for superior damping control and ride tuning.
• V2 Monotube Shock Pair — Matched rear shocks for coordinated suspension response.

Important notes

• Does not fit dually models.
• Factory rear contact overload springs must be removed as part of installation.
• Installation requires cutting and drilling; plan 6–10 hours for full completion.

Why customers pick this at Road Runner

• Geometry-corrected — Adjustable caster cam at the axle and precision radius arms keep suspension angles factory-close, preserving ride quality after the lift.
• Lifetime warranty backed locally — Rough Country's limited lifetime replacement warranty on structural and workmanship defects, honored by RRW technicians you know.
• Professional installation in-house — Technicians perform these conversions weekly; cutting, drilling, and coilover tuning done right the first time.
• Alignment performed in-house — Included as part of every lift install to ensure drivability and tire life.
• Upgrading to real coilovers — The 2.5-inch Vertex shocks replace the independent factory setup with tunable, high-capacity dampers that handle both on-road and off-road demands.

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