6 Inch Lift Kit | Diesel | Radius Arm | C/o V2 | Ford F-250 Super Duty (11-14)

Built for diesel F-250 Super Duty owners who want to run 37-inch tires while keeping factory suspension geometry intact, this 6-inch radius arm coilover conversion lift kit gives you the ground clearance and load capacity you need without sacrificing ride quality. Rough Country's precision-engineered radius arms and 2.5-inch Vertex coilovers preserve steering feel and handling — critical when you're towing or hauling heavy loads.

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

• Diesel Kit Box — Diesel-specific front suspension components engineered for the weight and torque curve of your F-250 Cummins.
• Block U-Bolt Kit with Overloads — Fabricated steel rear blocks engineered to handle payload while maintaining stock ride quality and preventing axle wrap.
• Radius Arm Upgrade Box (pair) — Heavy-duty radius arms at 27 lbs each with durable rubber bushings for maximum vibration absorption and reduced noise transmission into the cab.
• Adjustable Front Coilovers (pair) — Vertex 2.5-inch monotube shocks with 4.5–6-inch adjustment range, top-mounted reservoirs, and 56% greater fluid capacity than standard shocks for superior damping control.
• Adjustable Alignment Cam — Allows caster correction at the axle after installation to dial in your steering geometry.

Important notes

• Diesel models only — this kit does not fit gas-engine F-250 Super Duty trucks.
• Does not fit F-350 models or dually configurations.
• You must confirm whether your rear leaf springs are equipped with a factory overload spring — this affects block selection and ride balance.
• Installation requires cutting and drilling; plan 6–10 hours for completion.
• Alignment performed in-house after install to ensure caster and toe are corrected post-lift.

Why customers pick this at Road Runner

• Rough Country lifetime warranty backed locally — we honor every claim, no manufacturer runaround.
• Professionally installed by technicians who perform radius arm lifts every week — precision matters when you're correcting geometry.
• Alignment performed in-house as part of every lift install — your steering geometry is dialed in before you leave.
• Radius arms engineered to preserve factory-like suspension angles — you keep the smooth ride and towing stability diesel owners demand.
• Vertex coilovers tuned for load-carrying capacity — built to handle diesel torque and payload without bottoming or floating.

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