Skip to content
★★★★★ 4.9 (625 Google reviews) · Marietta shop · 📞 (678) 400-6467 · 🗺️ Get Directions · Live From The Shop
Google ★★★★★ Loading recent review… See all 625 →
Cart

Rough Country · Authorized Dealer

6 Inch Lift Kit | Ovld | C/o Vertex | Ford F-250/f-350 Super Duty (17-22)

Part #: 55459UPC: 840269914645Brand: Rough Country

$3,609.95

Price does not include installation.

Pay over time

*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.

Loading stock…
Call (678) 400-6467

Built for Ford Super Duty owners who want 37-inch tire clearance without sacrificing factory ride quality — this 6-inch Radius Arm Coilover Conversion Suspension Lift replaces the factory independent coil-shock setup with a precision-engineered system that keeps suspension geometry close to OE angles. The result is a truck that sits significantly higher while maintaining smooth, predictable handling.

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 Adjustable Front Coilovers (Left & Right) — precision-fit for 4.5–6 inch lift range with monotube design, external reservoir, and 56% greater fluid capacity than standard shocks for superior damping control.
  • Vertex 2.5 Rear Coilovers (Pair) — 8-stage adjustable monotube shocks calibrated for 6-inch rear lift with nitrogen-charged internals.
  • Radius Arm Kit & Upgrade Boxes — durable, fabricated radius arms weighing 27 lbs each, engineered to bolt into factory mounts and preserve factory-like suspension angles while providing maximum vibration absorption through rubber bushings.
  • 6 Inch Lift Block Kit with Anti-Axle Wrap Design — fabricated blocks stronger and longer-lasting than cast alternatives, specially engineered to eliminate common lift-block problems while maintaining stock ride quality.
  • Transfer Case Clocking Kit — ensures proper transfer-case re-indexing for driveline geometry preservation.
  • U-Bolt Kits & Hardware — all fasteners and brackets needed for complete installation, including top-mounted reservoir brackets and coil-over mounts fabricated from 1/4-inch steel.

Important notes

  • Does NOT fit gas engine models, manual shift transfer cases, or dually configurations.
  • Does NOT work on models equipped with the Tremor Factory Trim Package.
  • Models equipped with a 10-speed transmission require dial-pin removal during installation.
  • New fabricated lift block replaces the factory lift block as part of the conversion.
  • Recommended tire range is 35–37 inches.

Why customers pick this at Road Runner

  • Coilover conversion system preserves factory ride quality — suspension geometry engineered to stay close to OE angles, eliminating the harsh, bouncy feel typical of block-only lifts.
  • Vertex 2.5 monotube shocks with external reservoir deliver 56% greater damping capacity and 8-stage adjustability for tuning comfort and control on-road and off-road.
  • Fabricated radius arms bolt directly into factory mounts for faster, easier installation and proven long-term durability.
  • Alignment performed in-house as part of every lift install — corrected caster and geometry ensure tire wear stays even and steering remains responsive.
  • Rough Country's Limited Lifetime Replacement Warranty backed locally — we stand behind every kit we install with direct manufacturer support.

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
2Vertex 2.5 RR 6 In | Ford Super Duty (17-25)695805
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.