6 Inch Lift Kit | Diesel | 4 Link | M1 | Ford F-250/f-350 Super Duty (08-10)

Built for diesel F-250/F-350 Super Duty owners who want 6 inches of lift without sacrificing factory geometry, this 4-link suspension kit combines aggressive ground clearance with proper caster correction to keep your truck handling like it left the factory. Rough Country engineered it to work with 35"–37" tires while maintaining the driveline angles that define balanced on and off-road performance.

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-inch upper arm kit — restores proper suspension geometry at the front axle.
• 6-inch lower control arms — allow on-the-fly caster adjustment to dial in handling after install.
• Radius arm drop brackets — precision-engineered to bolt to factory mounts and preserve caster angles for factory-like driveability.
• 6-inch D-coil springs — lift the frame while maintaining ride quality.
• Add-a-leaf kit — reinforces rear leaf springs to support the lifted weight.
• 3-inch block and U-bolt kit — provides additional rear lift and geometry correction.
• Track bar relocation bracket and drop pitman arm — keep steering geometry square after the lift.
• M1 monotube shock pair (front and rear) — N3 series valving tuned for balanced on and off-road ride quality.
• Brake line relocation brackets — ensure proper brake-line routing on the lifted frame.

Important notes

• This kit is engineered for 4WD diesel F-250/F-350 Super Duty models only — it does NOT fit dually or gas-engine variants.
• If your vehicle is equipped with rear overload leafs, they will need to be removed during installation.
• Recommended tire range is 35"–37" — stay within this window to maintain suspension geometry and clearance.

Why customers pick this at Road Runner

• 100% bolt-on installation — no cutting, drilling, or fabrication required; most trucks finish the same day.
• Caster correction built in — radius arm drop brackets and adjustable lower control arms preserve factory handling angles so your Super Duty drives, stops, and steers like it should.
• Rough Country lifetime warranty backed locally — any defect in materials or craftsmanship, and we make it right.
• Professional alignment as part of every lift install — our in-house technicians dial in caster, camber, and toe so your truck tracks straight and your tires wear evenly.
• Experienced diesel Super Duty specialists — our techs install these kits every week and know every fitment detail by heart.

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