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

Part #: 51258UPC: 840269914515Brand: Rough Country

$2,889.95

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 suspension geometry while preserving factory-smooth handling. You'll run up to 37-inch tires and maintain proper suspension angles through precision-fit radius arms and 2.5-inch monotube coilovers with external reservoirs — a 56% fluid-capacity advantage over standard shocks.

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

  • Radius Arm Kit Box — precision-engineered arms bolt directly into factory mounts, preserving suspension geometry and reducing installation complexity.
  • Radius Arm Upgrade Box (qty 2) — durable 27-lb upgraded radius arms with rubber bushings for maximum vibration absorption and long-term durability.
  • 6" Kit Box | Coilover Conversion — top-mounted reservoir brackets and coil-over mounts fabricated from 1/4-inch steel for strength and precision fitment.
  • Vertex 2.5 Adjustable Front Coilovers (pair) — nitrogen-charged, 8-stage adjustable monotube design with external reservoir for 56% greater fluid capacity and superior damping control.
  • V2 Monotube Shock Pair — matched to the coilover conversion for consistent ride quality across the full suspension range.
  • 6.5 In Block U-Bolt Kit | Overloads — fabricated lift blocks engineered stronger than cast units, with anti-axle wrap geometry to maintain stock ride feel.
  • Transfer Case Clocking Kit — re-indexes transfer case output shaft to preserve driveline angles during the conversion.

Important notes

  • Does NOT fit 10-speed automatic models unless the dial pin is removed prior to installation.
  • Gasoline-engine models are not compatible — diesel only.
  • Does NOT fit manual shift transfer cases or dually configurations.
  • Does NOT work with the Tremor Factory Trim Package.
  • Kit requires cutting and drilling; plan 6–10 hours for full installation.

Why customers pick this at Road Runner

  • Radius arms bolt into factory mounts — geometry stays true to OE angles, preserving ride quality while lifting 6 inches.
  • Vertex 2.5-inch monotube coilovers deliver 56% more fluid capacity than standard shocks — smoother damping, longer service life.
  • Fabricated lift blocks are stronger and longer-lasting than cast alternatives.
  • Rough Country lifetime warranty backed locally — structural and workmanship defects covered for as long as you own the truck.
  • Professional installation and in-house alignment performed by techs who do these builds weekly — your truck leaves squared and ready to perform.

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

QtyPartPart #
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.