6 Inch Lift Kit | 4-link | Ovld | M1 | Ford F-250/f-350 Super Duty 4wd (17-22)

Built for Ford F-250/F-350 Super Duty owners who want commanding ground clearance and improved handling without sacrificing ride quality or factory geometry. This 6-inch 4-Link lift kit replaces your factory control arms with Rough Country's fixed upper arms and adjustable lower control arms, letting you fit 35"–37" tires while maintaining proper caster angles and driveability. The kit includes fabricated anti-wrap rear blocks, radius arm drop brackets for geometry correction, lifted coil springs, and extended brake lines — everything bolts on and goes in the same day.

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 — Overload rear block designed to prevent axle wrap and maintain stock ride quality during lift travel.
• Box Kit — Fabricated coil spring perch that forms the foundation of your lifted suspension geometry.
• 4.5-6in Up Arm Kit — Fixed upper control arms that preserve proper suspension geometry across your lift range.
• 4.5-6in Lower Arms — Adjustable lower control arms that allow fine-tuning of caster and camber after installation.
• CV Drive Shaft (Front) — Extended diesel-rated driveshaft that accommodates lift height and maintains proper angles at the transfer case.
• M1 Monotube Shock Absorbers (Pair) — Nitrogen-charged shocks that deliver balanced on and off-road performance with a smooth highway ride.
• M1 Monotube Shock Absorbers (Pair) — Additional shock pair for complete front and rear coverage.
• 6 Inch Coil Box — Lifted coil spring assembly engineered to work with the 4-Link geometry.

Important notes

• Fits F-250 Super Duty 4WD only — does NOT fit F-350, gas engine models, manual shift transfer cases, dually models, or models with 4" rear axle tube.
• Requires factory contact rear overload springs.
• Does NOT work with Tremor Factory Trim Package.
• Includes stainless steel extended brake lines and brackets; professional installation ensures proper brake-line routing.
• Radius arm drop brackets maintain proper caster — critical for factory handling and steering response after lift.
• New fabricated lift block replaces factory block; fabricated design offers longer lifespan than cast alternatives.

Why customers pick this at Road Runner

• Rough Country Lifetime Replacement Warranty backed by your local shop — not a third-party claims processor.
• Professionally installed by technicians who perform these lifts every week and understand Ford Super Duty geometry inside and out.
• Alignment performed in-house as part of every lift install — caster and camber set to Rough Country spec using adjustable lower arms.
• CV driveshaft included and pre-fit to your truck — no guesswork on transfer-case angles.
• Fabricated anti-wrap blocks eliminate common lift-kit pitfalls like axle bind and premature wear.

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