6 Inch Lift Kit | Diesel | Radius Arm | Vertex | Ford F-250/f-350 Super Duty (08-10)

Built for diesel Super Duty owners who want 6 inches of height without sacrificing factory geometry, this Radius Arm Lift Kit raises your 2008–2010 F-250 or F-350 while preserving suspension angles that keep your truck balanced on and off the road. Supports 35"–37" tires and installs 100% bolt-on — no cutting or drilling required.

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

• Radius Arm Upgrade Boxes (qty 2) — Heavy-duty radius arms equipped with durable rubber bushings for maximum vibration absorption while maintaining factory suspension angles.
• Vertex 2.5 FR Shocks (qty 2) — Adjustable reservoir shocks tuned for balanced on and off-road performance on the front axle.
• Vertex 2.5 RR Shocks (qty 2) — Rear-mounted adjustable reservoir shocks matched to the front for consistent ride quality.
• Add-A-Leaf Spring — Increases rear load capacity and ride height to level the truck with the front.
• 6-Inch D-Coil Spring — Lifted coil spring that supports the added height while preserving ride comfort.
• 3-Inch Block and U-Bolt Kit — Fabricated blocks are stronger and offer longer lifespan than cast alternatives.
• Adjustable Alignment Cam — Allows caster correction at the axle after install to dial in factory-spec geometry.
• Track Bar Relocation Bracket and Drop Pitman Arm — Maintains steering geometry and prevents bind during suspension travel.
• Brake Line Relocation Brackets — Protects brake lines from stretched during articulation.

Important notes

• Does NOT fit dually models.
• Factory rear contact overload springs must be removed.
• Gas models may require exhaust modification to clear the front drive shaft.

Why customers pick this at Road Runner

• Precision radius arms bolt to factory mounts — no cutting or drilling required — so your truck goes up the same day.
• Adjustable alignment cam and caster-correction hardware let our techs dial in factory suspension geometry after install, preserving ride quality and tire wear.
• Alignment performed in-house as part of every lift install — no separate trip needed.
• Rough Country Lifetime Replacement Warranty backed by local service and support.
• Our technicians install these kits every week — they know the geometry, the torque specs, and the common pitfalls on Super Duties.

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