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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 | Diesel | Radius Arm | M1 | Ford F-250 Super Duty 4wd (11-14)

Part #: 54040UPC: 840269917851Brand: Rough Country

$1,639.95

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 diesel F-250 Super Duty owners who want 6 inches of lift without sacrificing factory-like suspension geometry — this radius arm lift kit levels your truck's stance, increases ground clearance, and maintains proper driveline angles where it matters most. Supports 35"–37" tires and handles both daily driving and off-road use.

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

  • Diesel Kit Box — core lift components engineered specifically for your F-250's diesel platform.
  • Block U-Bolt Kit with overloads — heavy-duty rear blocks with anti-axle wrap design to maintain stock ride quality while eliminating common lift-block problems.
  • Radius Arm Upgrade Box (qty. 2) — precision-fit ultra-durable radius arms at 27 lbs each with rubber bushings for vibration absorption; equipped with adjustable alignment cam at the axle for caster correction.
  • M1 MONOTUBE SHOCK PAIR (qty. 2) — application-valved shocks tuned for balanced on and off-road performance.
  • 6-inch D-Coil springs — fabricated coil springs stronger and longer-lasting than cast alternatives.
  • Track bar relocation bracket and drop pitman arm — maintains proper driveline geometry and steering response.
  • Brake line relocation brackets — safe, factory-compliant brake routing after lift.

Important notes

  • ONLY fits 2011–2014 F-250 Super Duty 4WD diesel models equipped with rear factory contact overload springs.
  • Does NOT fit F-350, dually, or gas-engine models.
  • Designed to preserve factory suspension angles — caster adjustment cam allows fine-tuning after install.
  • 100% bolt-on installation — no cutting or drilling required.

Why customers pick this at Road Runner

  • Radius arms bolt into factory mounts and maintain factory-like angles — no geometry compromise after lift.
  • Backed by Rough Country's Lifetime Replacement Warranty, honored and serviced right here.
  • Our technicians install these kits every week — most are done the same day.
  • Alignment performed in-house after every lift install to ensure proper caster, camber, and toe.
  • Anti-axle wrap rear blocks solve common lift-block ride-quality issues so your F-250 stays smooth on the road and trail.

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

QtyPartPart #
1Diesel Kit Box | Ford Super Duty (11-14)1540BOX1
1Block U-Bolt Kitoverloads | Ford Super Duty (08-16)1564BOX3
1M1 MONOTUBE SHOCK PAIR770754P
1M1 MONOTUBE SHOCK PAIR770762P
16in D-Coil | Ford Super Duty (05-16)9295
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

  • 100% bolt-on installation
  • Increased ground clearance
  • Levels the front with the rear of the vehicle
  • Includes heavy-duty radius arms equipped with durable durable rubber Bushings for maximum vibration absorption.
  • New radius arms help maintain factory angles.
  • Includes adjustable alignment cam at the axle to allow caster adjustment
  • Includes application valved M1 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
2011-2014FordF-250 Super Duty King Ranch4WD
2011-2014FordF-250 Super Duty Lariat4WD
2011-2014FordF-250 Super Duty XL4WD
2011-2014FordF-250 Super Duty XLT4WD
2013-2014FordF-250 Super Duty Platinum4WD
  • Tire size: 35″ to 37″ tall
  • Lift height: 6″
Does NOT F-350 models. Does NOT fit dually models. Does NOT fit gas engine models. ONLY fits models equipped with rear factory contact overload springs

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.