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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 | C/o V2 | Ford F-250/f-350 Super Duty 4wd (17-22)

Part #: 55458UPC: 840269915024Brand: Rough Country

$2,969.95

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 maximum ground clearance without sacrificing ride quality, this 6-inch Radius Arm Coilover Conversion Lift Kit transforms your truck's geometry while preserving factory-like suspension angles. Run up to 37-inch tires and enjoy improved handling with Rough Country's precision-engineered radius arms and 2.5-inch monotube Vertex coilovers.

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 for secure mounting of rear lift blocks to the axle housing.
  • 6" Kit Box Coilover Conversion — Factory-replacing coilover mounts with top-mounted reservoir brackets constructed from 1/4-inch steel, engineered to accept 2.5-inch piston shocks.
  • Radius Arm Kit Box — Complete bracket and hardware assembly to mount precision-fit radius arms directly to factory suspension points.
  • Radius Arm Upgrade Box — Dual sets of ultra-durable fabricated radius arms at 27 lbs each, featuring durable rubber bushings for vibration absorption and superior durability over stock components.
  • Transfer Case Clocking Kit — Re-indexes the transfer case for optimal driveline geometry after lift installation.
  • Vertex 2.5 Adj FR Coilovers (LH & RH) — Nitrogen-charged, 8-stage adjustable monotube shocks with external reservoirs and 56% greater fluid capacity than average reservoir shocks for responsive damping control.
  • V2 Monotube Shock Pair — Precision-tuned rear shocks for balanced ride quality across varied terrain.
  • Universal 3/4 X 4 1 X 1/2 In U-Bolt Kit — Additional fastening hardware for secure suspension component attachment.

Important notes

  • Models equipped with a 10-speed transmission must have the dial pin removed during installation.
  • Does NOT fit gasoline-engine models — diesel Super Duty only.
  • Does NOT fit manual shift transfer cases.
  • Does NOT fit dually models.
  • Does NOT work on models equipped with the Tremor Factory Trim Package.
  • Installation requires cutting and drilling; plan 6–10 hours for complete installation.

Why customers pick this at Road Runner

  • Geometry-corrected radius arms bolt to factory mounts, preserving factory suspension angles and ride quality.
  • Rough Country lifetime warranty backed locally — no hassle, no fine print.
  • Professionally installed by technicians who perform these conversions every week.
  • Alignment performed in-house as part of every lift install — included in your package.
  • 2.5-inch Vertex coilovers with external reservoirs deliver 56% greater damping capacity than standard shocks.
  • Fabricated lift blocks engineered to outlast cast alternatives and eliminate common lift-block sag.

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

QtyPartPart #
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
1V2 MONOTUBE SHOCK PAIR760805-2
16" Kit Box | Coilover Conversion | Ford Super Duty (17-22)50010991
16.5 In Block U-Bolt Kitoverloads | Ford Super Duty (17-22)1550BOX2
1Radius Arm Kit Box | Ford Super Duty (17-22)512BOX1
1Vertex 2.5 Adj FR Lh 4.5IN-6.IN | Ford F250/F350 4WD (05-22)685042L
1Vertex 2.5 Adj FR Rh 4.5IN-6.IN | Ford F250/F350 4WD (05-22)685042R
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.
  • Includes durable radius arms.
  • 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″
Models equipped with a 10-speed transmission must remove dial pin. Does NOT fit gas engine models. Does NOT fit manual shift transfer cases. Does NOT fit dually models. New fabricated lift block replaces the factory equipped lift block. 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.