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

Built for Ford Super Duty diesel owners who want a commanding stance without sacrificing ride quality, this 6-inch radius arm coilover conversion lift kit delivers maximum ground clearance while preserving factory suspension geometry. You'll gain up to 37-inch tire clearance and the smooth, controlled ride that comes from Rough Country's Vertex Coilovers — a massive step up from stock shocks.

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" Lift Kit Box — Complete suspension lift system engineered for 2005–2007 Ford Super Duty 4WD trucks.
• Coilover Conversion Kit — Replaces factory independent coil-shock setup with precision-engineered coil-over mounts and top-mounted reservoir brackets fabricated from 1/4-inch steel for durability.
• Vertex 2.5-inch Adjustable Coilovers (Front Pair) — Nitrogen-charged, 8-stage adjustable shocks with monotube design, external reservoir, and 56% greater fluid capacity than average reservoir shocks for superior damping control.
• Vertex 2.5-inch Rear Coilovers (Pair) — Matched rear units for balanced suspension response across all terrain.
• Heavy-Duty Radius Arms (Pair) — Precision-fit to factory mounts at 27 lbs each, featuring durable rubber bushings for vibration absorption and factory-angle geometry preservation.
• Adjustable Alignment Cam — Allows caster adjustment at the axle for fine-tuned geometry after installation.
• 3-Inch Fabricated Blocks & U-Bolt Kit — Rear lift blocks offer greater strength and longer lifespan than cast alternatives.
• Add-A-Leaf Kit — Reinforces rear spring capacity to handle the new suspension load.

Important notes

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

Why customers pick this at Road Runner

• Rough Country's lifetime replacement warranty — backed locally and honored by the team that installed your kit.
• Factory geometry preservation — the radius arm design and adjustable caster cam keep suspension angles close to stock, protecting ride quality and component life.
• Professionally installed by technicians who perform these conversions every week — precision work ensures proper caster angle, coilover pre-load, and block stacking.
• Alignment performed in-house as part of every lift install — no guesswork, no return trips.
• Vertex Coilovers with 8-stage damping adjustment — tune your ride from highway-smooth to rock-crawling aggressive without leaving the kit.

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