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★★★★★ 4.9 (625 Google reviews) · Marietta shop · 📞 (678) 400-6467 · 🗺️ Get Directions · Live From The Shop
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Rough Country · Authorized Dealer

6 Inch Lift Kit | R/a | Ovlds | Vertex | Ford F-250/f-350 Super Duty (17-22)

Part #: 51250UPC: 843030190149Brand: Rough Country

$3,119.95

Price does not include installation.

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*Estimated lease-to-own payment. Final approval and terms are determined by the lender. See all financing options →

🛠️ Install available in Marietta, GA

Installed and serviced at Road Runner Wheels & Tires — 1585 Roswell Rd, Marietta, GA 30062. Call (678) 400-6467 to schedule.

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Built for F-250/F-350 Super Duty owners who want 6 inches of lift without sacrificing factory handling, this Rough Country Radius Arm Suspension Lift is an all-inclusive kit engineered to preserve driveline geometry while unlocking up to 37" tire clearance. Precision-fit radius arms bolt to factory mounts, and specially designed anti-axle wrap rear blocks eliminate common lift-block problems — all while the included Vertex shocks deliver balanced on and off-road performance.

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

  • Vertex 2.5 Front Shocks (qty 2) — Adjustable-reservoir design tuned for balanced on and off-road performance with factory-style ride quality.
  • Vertex 2.5 Rear Shocks (qty 2) — Pair to the front shocks for consistent damping and control across the suspension range.
  • Radius Arm Kit Box — Precision-fit radius arms with durable rubber bushings; bolt to factory mounts for easier installation and proper caster geometry.
  • Radius Arm Upgrade Box (qty 2) — Additional reinforced radius arm components ensuring durability and correct suspension angles under load.
  • 6 Inch Coil Box — Lifted coil springs engineered for 6" of height while maintaining factory ride characteristics.
  • 6.5 In Block U-Bolt Kit — Fabricated rear blocks with anti-axle wrap design; stronger and longer-lasting than cast alternatives, preventing binding and maintaining stock ride quality.
  • Transfer Case Clocking Kit — Ensures proper transfer-case alignment after lift installation, preserving driveline geometry and eliminating vibration.

Important notes

  • Does not fit F-350 dually models or models with 4" rear axle tubes.
  • Requires factory rear contact overload springs — will not work on vehicles without them.
  • Not compatible with manual shift transfer cases or gas engine models.
  • Not compatible with Tremor Factory Trim Package.
  • Radius arm drop brackets maintain proper caster — critical to preserving factory handling and driveability.

Why customers pick this at Road Runner

  • Geometry preserved after install — radius arm drop brackets hold factory caster angles, so your truck handles like stock even at 6" higher.
  • Rough Country Lifetime Replacement Warranty backed by local installation and service.
  • Professionally installed by technicians who dial in these kits every week.
  • Alignment performed in-house as part of every lift install — no separate trip needed.
  • Transfer-case clocking handled on-site to eliminate vibration and driveline stress.

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

QtyPartPart #
16 Inch Coil Box | Ford Super Duty (05-22)9296
16.5 In Block U-Bolt Kitoverloads | Ford Super Duty (17-22)1550BOX2
1Radius Arm Kit Box | Ford Super Duty (17-22)512BOX1
1Transfer Case Clocking Kit | Ford Super Duty (17-24)55003
2Vertex 2.5 FR 6 In | Ford Super Duty (05-22)685754
2Vertex 2.5 RR 6 In | Ford Super Duty (17-25)695805
1Radius Arm Upgrade Box | Ford F-250/F-350 Super Duty 4WD (2005-2022)53600991A
1Radius Arm Upgrade Box | Ford F-250/F-350 Super Duty 4WD (2005-2022)53600992A

Features

  • Easy bolt-on installation
  • Increased ground clearance
  • Levels the front with the rear of the vehicle
  • Radius arm drop brackets allow for properly set caster. Proper caster is crucial to maintaining factory handling and driveability.
  • Includes application valved N3 series shock absorbers which offer the best in balanced performance for on and off-road use.
  • Fabricated blocks are stronger and offer a longer lifespan than cast blocks.
  • Specially designed anti-axle wrap rear blocks maintain stock ride quality while eliminating common lift block problem.
YearsMakeModelDrive
2017-2022FordF-250 Super Duty King Ranch4WD
2017-2022FordF-250 Super Duty Lariat4WD
2017-2022FordF-250 Super Duty Platinum4WD
2017-2022FordF-250 Super Duty XL4WD
2017-2022FordF-250 Super Duty XLT4WD
2018-2022FordF-250 Super Duty Limited4WD
2017-2022FordF-350 Super Duty King Ranch4WD
2017-2022FordF-350 Super Duty Lariat4WD
2017-2022FordF-350 Super Duty Platinum4WD
2017-2022FordF-350 Super Duty XL4WD
2017-2022FordF-350 Super Duty XLT4WD
2018-2022FordF-350 Super Duty Limited4WD
  • Tire size: 35″ to 37″ tall
  • Lift height: 6″
Does NOT F-350 models. Does NOT fit dually models. Does NOT fit manual shift transfer cases Does NOT fit gas engine models. Does NOT fit models with 4" rear axle tube ONLY fits models equipped with rear factory contact overload springs Does NOT work on models equipped with Tremor Factory Trim Package

Rough Country Lifetime Replacement Warranty covers all structural components against defects in materials and workmanship for the original purchaser's lifetime ownership of the vehicle.

3-Year Finish Warranty on all painted and powder-coated surfaces.

3-Year Shock Warranty on N3, M1, and Vertex shocks against leakage and structural failure.

Warranty service is handled by Rough Country directly — call (678) 400-6467 if you need help opening a warranty claim and we'll walk you through it.