6 Inch Lift Kit | Diesel | 4 Link | D/s | C/o Vertex | Ford F-250/f-350 Super Duty (17-22)

Built for diesel Ford Super Duty owners who want a 6-inch lift without sacrificing ride quality or factory handling, this 4-Link Coilover Conversion kit replaces your factory independent coil setup with adjustable Vertex Coilovers and a durable 4-link arm configuration. You'll gain up to 37-inch tire clearance while maintaining proper caster geometry through radius arm drop brackets — a critical detail that keeps your truck driving like it should.

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

• 6.5 In Block U-Bolt Kit — Heavy-duty fastening hardware that secures the fabricated lift blocks to your axles with superior strength and longevity.
• Box Kit — Welded steel framework engineered to support the coilover conversion and maintain suspension geometry.
• 4.5–6in Up Arm Kit — Fixed upper control arms pre-set for optimal geometry during the 4-link conversion.
• 4.5–6in Lower Arms — Adjustable lower control arms that allow ride-height fine-tuning and caster correction after installation.
• 6" Coilover Conversion Box — Top-mounted mounts and brackets fabricated from 1/4-inch steel to secure your new shock assembly.
• CV Drive Shaft (Front) — OEM-style replacement shaft engineered for diesel 4WD geometry at 6 inches of lift.
• Vertex 2.5" Adjustable Front Coilovers (Left & Right) — Nitrogen-charged, 8-stage adjustable monotube shocks with external reservoirs and 56% greater fluid capacity than standard reservoir shocks; deliver real-time damping control and ride-height adjustability.
• Vertex 2.5" Rear Coilovers (Pair) — Matched rear shocks that work in concert with the front setup to maintain balanced suspension travel and compliance.
• Universal U-Bolt Kit — Additional fasteners for rear block securement.

Important notes

• Diesel engines only — does not fit gas-engine models.
• 4WD only — not compatible with manual shift transfer cases or dually configurations.
• 10-speed automatic transmission models require dial-pin removal as part of installation.
• Does not fit Ford Super Duty models equipped with the Tremor Factory Trim Package.
• Installation requires cutting and drilling; 6–10 hours recommended for complete assembly.
• Radius arm drop brackets must be properly set during install to maintain factory caster and handling — professional alignment in-house ensures this is done correctly.

Why customers pick this at Road Runner

• Rough Country lifetime warranty backed locally — structural and workmanship defects covered from the date of purchase.
• Professional installation by technicians who perform 4-link conversions every week — geometry set right the first time.
• Alignment performed in-house as part of every lift install — caster and suspension geometry corrected to factory specification.
• Vertex Coilovers with real-time damping control and ride-height adjustability — dial in your setup without replacing shocks.
• OEM CV driveshaft included — no guesswork on drivetrain modifications at 6 inches of lift.

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