6 Inch Lift Kit | Gas | Radius Arm | Ford F-250/f-350 Super Duty 4wd (08-10)

Built for Ford F-250/F-350 Super Duty owners who want 6 inches of ground clearance without sacrificing ride quality, this Rough Country radius arm lift kit combines aggressive stance with factory-like suspension geometry. The kit preserves critical angles through precision-fitted radius arms and an adjustable caster cam, letting you run 35"–37" tires while maintaining the driveline and handling balance that makes these trucks work on and off the road.

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 Coil Box — Fabricated coil springs rated for the full 6-inch lift height, stronger and longer-lasting than cast alternatives.
• Radius Arm Upgrade Box (qty. 2) — Heavy-duty radius arms with durable rubber bushings that absorb vibration while maintaining factory suspension angles; each arm weighs 27 lbs for superior durability.
• N3 Shock Kit — Valved shock absorbers tuned for balanced on and off-road performance, delivering a controlled ride for daily drivers and weekend adventurers alike.
• 3 Inch Block and U-Bolt Kit — Fabricated rear blocks that lift the rear axle and stabilize the suspension geometry.
• Add-A-Leaf — Supplemental leaf spring to handle increased load capacity and maintain proper ride height under payload.
• Alignment Cam at the Axle — Adjustable caster correction tool to fine-tune front geometry after install and preserve steering response.
• Track Bar Relocation Bracket and Drop Pitman Arm — Components that maintain proper Pitman arm and track bar angles, preventing bind and extending component life.
• Brake Line Relocation Brackets — Safety-critical hardware that prevents brake line stretch and maintains hydraulic integrity.

Important notes

• Does NOT fit dually models — confirm your axle configuration before ordering.
• Does NOT fit diesel engine models — gasoline powerplants only.
• Factory rear contact overload springs must be removed as part of the installation.

Why customers pick this at Road Runner

• 100% bolt-on design — no cutting, drilling, or frame modification required; faster install means you're back on the road sooner.
• Factory-like geometry preserved — the adjustable caster cam and precision radius arms keep suspension angles close to stock, so ride quality and handling feel natural, not compromised.
• Professional installation by techs who do these every week — our team aligns and tests every lift kit in-house to confirm proper geometry and driveline clearance.
• Rough Country lifetime warranty backed locally — if something fails, Road Runner handles the claim and replacement right here.

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