6 Inch Lift Kit | Diesel | Radius Arm | C/o V2 | Ford F-250/f-350 Super Duty (08-10)

Built for diesel Super Duty owners who demand 37-inch tire clearance and factory-smooth ride quality, this 6-inch radius arm coilover conversion lift kit transforms your 08–10 F-250/F-350 while preserving suspension geometry and driveline angles. Rough Country's upgraded radius arms and 2.5-inch Vertex coilovers deliver serious ground clearance without the harsh, disconnected feel of lesser suspensions.

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 lift kit box — coilover conversion mounts and brackets fabricated from 1/4-inch steel for strength and durability.
• Radius arm upgrade (qty 2) — 27 lb each, precision-fit to factory mounts with durable rubber bushings that absorb vibration while maintaining stock suspension angles.
• Vertex 2.5-inch adjustable coilovers (front, pair) — nitrogen-charged monotube design with external reservoir, 8-stage adjustability, and 56% greater fluid capacity than standard shocks for optimal damping control.
• V2 monotube shock pair — rear shocks engineered to complement the front conversion.
• Add-a-leaf (rear) — reinforces factory springs under the added weight and lift.
• 3-inch blocks and u-bolts — rear suspension rise components; fabricated for longer lifespan than cast alternatives.
• Adjustable alignment cam — allows caster correction at the axle to dial in geometry after install.

Important notes

• Does not fit dually models.
• Factory rear contact overload springs must be removed during installation.
• Gas-model Super Duties may require exhaust modification to clear the front driveshaft.
• Installation requires cutting and drilling; allow 6–10 hours for completion.
• Recommended tire range is 35–37 inches; exceeding 37 inches may compromise clearance and handling.

Why customers pick this at Road Runner

• Geometry-preserving design keeps suspension angles close to factory specs — no harsh ride penalty.
• Heavy-duty radius arms (27 lb each) and 1/4-inch steel brackets ensure durability and long-term reliability.
• Professional installation with in-house alignment performed as part of every lift — your truck leaves ready to drive.
• Rough Country's limited lifetime replacement warranty, backed locally and honored by our shop.
• Coilover adjustability lets you dial ride height and damping to your preference after install.

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