6 Inch Lift Kit | Diesel | Radius Arm | C/o V2 | Ford F-250 Super Duty (15-16)

Built for F-250 Super Duty owners who want 6 inches of ground clearance, 35–37 inch tires, and a ride that feels factory-smooth — this Rough Country Radius Arm Coilover Conversion lift kit transforms your truck's suspension geometry while keeping angles true to original design. The result: a commanding stance without the harsh ride typical of heavy lifts.

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

• Kit Box (F-250 Super Duty 15-16) — main structural platform and mounting hardware.
• Block U-Bolt Kit (no overloads) — fabricated from heavy-duty steel for superior strength and longer lifespan than cast blocks.
• Radius Arm Upgrade Boxes (pair) — precision-fit arms at 27 lbs each with durable rubber bushings for vibration absorption and geometry correction.
• Adjustable Front Coilovers (pair, 2.5-inch Vertex monotube) — nitrogen-charged, 8-stage adjustable design with external reservoir offering 56% greater fluid capacity than standard shocks for optimal damping control.
• Anti-Axle Wrap Rear Blocks — specially engineered to maintain stock ride quality and eliminate common lift-block issues.

Important notes

• This kit does not fit F-350 models, dually models, or gas-engine F-250s. Diesel engines only.
• Installation requires cutting and drilling; plan 6–10 hours for completion.
• Includes adjustable alignment cam at the axle to allow caster correction and preserve factory suspension angles.
• Maximum recommended tire size is 37 inches.

Why customers pick this at Road Runner

• Rough Country's lifetime warranty on suspension components — backed locally at Road Runner with real-world support.
• Geometry-corrected radius arms bolt to factory mounts, keeping your truck's suspension as close to OE angles as possible for a smooth, factory-like ride.
• Professional installation by technicians who perform these conversions every week — alignment performed in-house as part of the install.
• Vertex 2.5-inch monotube coilovers with 56% greater reservoir capacity deliver superior damping control and adjustability for fine-tuned handling.
• Fabricated blocks over cast — engineered for durability and longevity in demanding diesel-truck duty.

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