6 Inch Lift Kit | Diesel | 4 Link | Rr Spring | C/o Vertex | Ford F-250/f-350 Super Duty (05-07)

Built for Ford Super Duty diesel owners who want 6 inches of lift without sacrificing ride quality or factory handling, this 4-Link Coilover Conversion kit replaces your factory independent coil setup with a 2.5-inch Vertex Coilover system. You'll gain adjustable ride height, improved dampening control, and the geometry correction that keeps your truck driving like it should — all backed by Rough Country's lifetime 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

• 6-inch upper arm kit — fixed upper arms engineered for the 4-Link conversion geometry.
• 6-inch lower control arms — adjustable lower arms that work with the radius drop brackets to maintain proper caster and factory handling.
• Vertex 2.5-inch adjustable front coilovers (pair) — nitrogen-charged, 8-stage adjustable monotube shocks with external reservoirs and 56% greater fluid capacity than standard reservoir shocks, delivering superior damping control.
• Vertex 2.5-inch rear coilovers (pair) — matching rear shocks for balanced suspension response and ride height adjustability.
• 6-inch rear leaf springs (pair) — OE-profile springs tuned for the 6-inch lift height.
• Radius arm drop brackets — maintain proper suspension geometry and allow for correct caster setting, crucial to factory-like handling and driveability.
• Kit box with cutting/drilling templates — guides you through modification points on the frame.
• U-bolt kit — secures the rear leaf springs and coilover mounts.

Important notes

• Does not fit dually models.
• Accommodates 35–37-inch tires; larger tires may require trimming or additional suspension tuning.
• Installation requires cutting and drilling into the frame; professional installation at Road Runner Wheels & Tires is highly recommended to ensure precise geometry and alignment.

Why customers pick this at Road Runner

• Rough Country's 2.5-inch Vertex Coilovers are premium components — monotube design with external reservoirs gives you real damping adjustability and ride quality that rivals far more expensive independent builds.
• Radius arm drop brackets are included and set up to preserve factory caster geometry — your truck won't pull, wander, or wear tires prematurely after lift.
• Professional alignment performed in-house as part of every lift install — we dial in your geometry and send you down the road driving straight.
• Rough Country's lifetime warranty is backed by us locally — if anything fails, we handle the warranty claim and get you back on the road.
• Our diesel Super Duty specialists install these conversions every week — we know exactly how to cut and drill your frame, route brake lines, and set suspension geometry to factory spec.

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