6 Inch Lift Kit | Diesel | Ovld | C/o Vertex | Ford F-250/f-350 Super Duty (17-22)

Built for diesel Super Duty owners who demand maximum clearance and adjustability, this 6-inch coilover conversion lift kit replaces the factory independent coil-shock setup with precision-engineered Vertex 2.5-inch adjustable coilovers. You'll gain 6 inches of lift while preserving factory ride geometry through radius arm drop brackets and anti-axle wrap rear blocks — and you can safely run 35–37 inch tires.

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" Kit Box — main structural and fastener package for the 6-inch lift foundation.
• 6.5" Block U-Bolt Kit (overloads) — fabricated rear blocks that are stronger than cast alternatives and specially designed to eliminate common lift-block issues while maintaining stock ride quality.
• Coilover Conversion Kit Box — engineered to convert the factory independent coil-shock system to a coilover setup.
• Transfer Case Clocking Kit — recalibrates transfer case geometry after the 6-inch lift to preserve driveline angles.
• Vertex 2.5" Adjustable Front Coilovers (Left & Right) — monotube design with external reservoir, 56% greater fluid capacity than typical shocks, and 8-stage adjustability for fine-tuned damping control.
• Vertex 2.5" Rear Coilovers (Pair) — matched to the front units for balanced suspension performance and geometry correction.

Important notes

• Diesel engines only — does not fit gas-engine Super Duty models.
• Does not fit dually models.
• Automatic transfer case only — does not fit manual shift transfer cases.
• Requires rear factory contact overload springs to install.
• Not compatible with Tremor Factory Trim Package.

Why customers pick this at Road Runner

• Radius arm drop brackets deliver correct caster geometry — you keep factory handling and driveability, not a wandering, twitchy ride.
• Vertex coilovers with 8-stage adjustability let you dial in compression and rebound to match your driving style and terrain.
• Transfer case clocking kit included — driveline angles stay factory-safe, preventing premature wear on the driveshaft and rear differential.
• Rough Country's lifetime warranty backed locally — any structural or workmanship defect is covered from the date of purchase.
• Professional installation and alignment in-house — our technicians install these kits weekly and perform full-truck alignment as part of every lift, so your truck handles right from day one.

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