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

Built for diesel Super Duty owners who want a commanding 6-inch lift with true 4-Link geometry and adjustable coilover damping, this Rough Country 6" 4-Link Coilover Conversion Lift Kit replaces your factory independent coil-shock setup with a purpose-built suspension that levels the front with the rear while maintaining proper caster for factory-like handling. The adjustable Vertex 2.5" coilovers deliver ride-height tuning and 56% greater fluid capacity than comparable shocks — ideal for 35"–37" tire clearance.

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

• Box Kit | Ford Super Duty (17–22) — Structural frame kit for the coilover conversion mounting.
• 4.5–6in Up Arm Kit | Ford Super Duty (17–22) — Fixed upper control arms engineered for the 4-Link geometry.
• 4.5–6in Lower Arms | Ford Super Duty (17–22) — Adjustable lower control arms for precise ride-height and geometry tuning.
• Radius Arm Drop Brackets — Maintain proper caster angles and factory-level handling characteristics.
• 4.5 In Block U-Bolt Kit No Overloads — Fabricated lift blocks (stronger and longer-lasting than cast units) for rear suspension mounting.
• 6" Kit Box | Coilover Conversion | Ford Super Duty (17–22) — Top-mounted reservoir bracket and coil-over mounts constructed from 1/4-inch steel.
• Vertex 2.5 Adjustable Coilovers (Front Pair) — Monotube shocks with external reservoir, nitrogen-charged, 8-stage adjustable damping for superior ride quality and control.
• Vertex 2.5 Rear Coilovers (Pair) — Matched rear units for balanced suspension performance across all terrain.
• CV Drive Shaft | Front | Diesel — New front driveshaft engineered for proper geometry under lift and increased suspension articulation.
• Universal 3/4" × 4" × 1.5in U-Bolt Kit — Secondary fastening hardware for secure rear axle mounting.

Important notes

• Requires cutting and drilling during installation — estimated 6–10 hours. Professional installation at Road Runner Wheels & Tires recommended.
• Does NOT fit gas-engine models — diesel Super Duty only.
• Does NOT fit manual shift transfer cases or dually configurations.
• Does NOT fit Tremor Factory Trim Package models.
• Models equipped with a 10-speed transmission must have the dial pin removed during installation.
• New fabricated lift block replaces the factory block; OE lift block cannot be reused.

Why customers pick this at Road Runner

• Professionally installed by suspension technicians who perform 4-Link coilover conversions every week — cutting and drilling done right the first time.
• Alignment performed in-house as part of every lift install — caster set to spec so your truck drives like factory, not like a lifted truck.
• Vertex 2.5" coilovers with 56% greater fluid capacity deliver adjustable damping you can tune for your terrain and driving style.
• Fabricated lift blocks outlast cast alternatives — no premature sagging or cracking.
• Rough Country's limited lifetime replacement warranty backed locally — if a component fails, you walk in and we handle it.

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