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

Built for F-250 Super Duty diesel owners who want a commanding 6-inch lift without sacrificing factory geometry or ride quality, this Rough Country radius arm kit delivers aggressive stance while preserving suspension angles that matter. You'll gain up to 37" tire clearance and the confidence of bolt-on engineering backed by Rough Country's Lifetime Replacement Warranty.

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 — foundational components engineered specifically for 11–14 F-250 Super Duty diesel models.
• Block U-Bolt Kitoverloads — heavy-duty fastening system for overload spring integration at the rear axle.
• Radius Arm Upgrade Box (qty 2) — precision-fit ultra-durable radius arms (27 lbs each) with rubber bushings for vibration absorption and factory-angle preservation; includes adjustable alignment cam at the axle for caster correction.
• V2 Monotube Shock Pair (qty 2) — application-valved shock absorbers tuned for balanced on and off-road ride quality and durability.
• 6-inch D-Coil — fabricated coil spring engineered for the 6-inch lift height and Ford Super Duty geometry.
• Track bar relocation bracket and drop pitman arm — steering geometry correction components included.
• Brake line relocation brackets — safety harness for hose routing under increased suspension travel.

Important notes

• Does not fit F-350 models, dually configurations, or gas-engine F-250s — diesel 4WD only for this kit.
• Must confirm your rear suspension is equipped with a factory overload spring before ordering — this kit's block system is designed for vehicles with OE overload springs.
• 100% bolt-on installation requires no cutting, drilling, or frame modification.
• Adjustable caster cam at the axle allows fine-tuning of suspension geometry post-install.

Why customers pick this at Road Runner

• Radius arms preserve factory suspension angles — critical for long-term durability and ride quality on diesel trucks carrying real loads.
• Professionally installed by technicians who perform these kits every week — no guesswork on geometry setup.
• Alignment performed in-house as part of every lift install, using the adjustable caster cam to dial in correct caster angle.
• Rough Country Lifetime Replacement Warranty backed by local service — if anything wears, we replace it.
• Same-day installation on most lifts keeps your truck off the rack and back to work.

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