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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 | Ovld | Vertex | Ford F-250/f-350 Super Duty 4wd (2017-2022)

Part #: 55450UPC: 843030190163Brand: Rough Country

$3,199.95

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 Super Duty owners who want 6 inches of lift, 37-inch tire clearance, and factory-smooth ride quality—this radius arm suspension lift kit preserves the geometry that makes your truck handle like stock while delivering serious ground clearance and capability. Rough Country's precision-fit radius arms and fabricated anti-wrap rear blocks keep suspension angles factory-close, so you get the upgrade without the compromise.

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 units engineered for balanced on and off-road performance.
  • Vertex 2.5 Rear Shocks (qty 2) — matched pair for controlled suspension articulation under load.
  • Radius Arm Kit Box — precision-fit upgraded radius arms with durable rubber bushings that bolt into factory mounts for easier installation and factory-like suspension angles.
  • Radius Arm Upgrade Box (qty 2) — reinforced geometry correction to maintain proper caster and prevent handling issues.
  • 6.5 In Block U-Bolt Kit — heavy-duty rear lift blocks engineered to prevent axle wrap and binding.
  • 6 Inch Coil Box — lifted front coil springs that work with the radius arms to achieve the full 6-inch lift.
  • Transfer Case Clocking Kit — re-indexes the transfer case to maintain factory driveline angles after the lift.
  • Universal U-Bolt Kit — fastening hardware for secure suspension attachment.

Important notes

  • Does NOT fit gas engine models — diesel Super Duty only.
  • Does NOT fit dually models.
  • Does NOT fit manual shift transfer cases — automatic transmissions only.
  • Does NOT fit models with 3.5" rear axle tube — requires standard rear axle housing.
  • ONLY fits models equipped with rear factory contact overload springs.
  • Does NOT work on models equipped with Tremor Factory Trim Package.

Why customers pick this at Road Runner

  • Caster-corrected radius arms preserve factory handling and driveability after the lift.
  • Rough Country Lifetime Replacement Warranty backed by in-house service.
  • Professionally installed by technicians who perform these lifts every week.
  • Alignment performed in-house as part of every lift installation.
  • Vertex adjustable reservoir shocks dial in on and off-road balance right from the box.
  • Fabricated anti-wrap rear blocks engineered to eliminate binding and ride quality loss.

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
1Univ. 3 4 X 4 1 X 1 2in U-Bolt Kit | Ford Super Duty (17-22)7675
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 fit gas engine models. Does NOT fit dually models. Does NOT fit manual shift transfer cases Does NOT fit models with 3.5" 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.