4.5 Inch Lift Kit | No Ovld | C/o Vertex | Ford F-250 Super Duty (15-16)

Built for Ford F-250 Super Duty owners who want serious lift without sacrificing factory ride quality, this 4.5-inch coilover conversion kit replaces your factory independent coil setup with a precision-engineered suspension system. You'll gain up to 37-inch tire clearance while Rough Country's radius arm drop brackets preserve proper caster geometry — the geometry stays factory-close, so handling and driveability feel smooth both on and off road.

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

• 4.5 In Block U-Bolt Kit No Overloads — Ford-specific rear block system designed with anti-axle wrap geometry to maintain stock ride quality while eliminating common lift-block problems.
• Box Kit — Fabricated steel mounting structure stronger and longer-lasting than cast alternatives, precision-fit to factory mounting points.
• 4.5" Kit Box Coilover Conversion — The structural foundation for your coilover upgrade, engineered to accommodate the new shock mounts.
• Vertex 2.5 Adj FR (Left & Right) — Ultra-durable, 8-stage adjustable nitrogen-charged coilovers with 2.5-inch pistons, monotube design, and external reservoirs for 56% greater fluid capacity than typical shocks. Delivers balanced on and off-road performance with optimal damping control.
• Vertex 2.5 RR (Pair) — Rear coilovers matched to the front for consistent suspension behavior across the truck's wheelbase.
• Radius Arm Drop Brackets — Precision-fit brackets that allow proper caster correction, keeping suspension geometry as close to factory angles as possible to preserve handling and driveability.

Important notes

• This kit is engineered for 2015–2016 F-250 Super Duty 4WD only. It does not fit F-350 models, gas engine models, or dually configurations.
• If your truck is equipped with a 2-piece rear driveshaft, a carrier-bearing drop bracket is required as a separate purchase.
• Installation requires cutting and drilling; plan 6–10 hours for full completion. Professional installation at Road Runner is strongly recommended to ensure proper geometry and alignment.

Why customers pick this at Road Runner

• Radius arm drop brackets correct caster geometry — Rough Country engineered these brackets to maintain factory-close suspension angles, so your truck handles like stock even at 4.5 inches higher.
• Vertex coilovers deliver on-road and off-road balance — 56% greater reservoir capacity, monotube design, and 8-stage adjustability give you tuning control without sacrificing daily-drive comfort.
• Rough Country lifetime warranty backed locally — Limited lifetime replacement coverage on structural and workmanship defects, honored right here at Road Runner.
• Alignment performed in-house as part of every lift install — We dial in your truck's geometry, caster, and toe the day the kit goes in — no extra trips to an alignment shop.
• Fabricated blocks built to last — Stronger and longer-lasting than cast alternatives, with anti-axle wrap design to eliminate common lift-block problems.
• Same-day installation available — Most lift kits are done before you leave, so you drive off on your new suspension the same day.

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