6 Inch Lift Kit | Diesel | No Ovld | Vertex | Ford F-250 Super Duty (15-16)

Built for F-250 Super Duty diesel owners who want maximum ground clearance without sacrificing ride quality — this 6-inch lift kit levels your truck front-to-rear, opens up 35"–37" tire options, and restores proper caster geometry so your rig handles like it should on pavement and trails alike.

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

• 548 Kit Box (Ford Super Duty 15–16) — houses all hardware, fasteners, and brackets for a complete, organized installation.
• Block U-Bolt Kit (No Overloads) — secure attachment system engineered for diesel-spec rear axle loads without factory overload springs.
• Vertex 2.5 FR 6 In Coil Springs (qty 2) — precision-valved front coils deliver the 6-inch lift while maintaining progressive spring rate for both highway comfort and off-road compliance.
• Vertex 2.5 RR 6 In Coil Springs (qty 2) — rear coils match the front lift height and work with fabricated anti-wrap blocks to eliminate axle wrap and binding.
• 6 In D-Coil Block — fabricated (not cast) rear block engineered with anti-axle-wrap geometry to preserve stock ride quality under load.
• Radius Arm Drop Brackets — repositioned to maintain factory caster angle, critical for steering feel and tire wear after lift installation.
• N2.0 Nitrogen-Charged Shock Absorbers — dual-purpose shocks tuned for balanced on-road manners and off-road articulation, backed by Rough Country's Lifetime Replacement Warranty.
• Stainless Steel Extended Brake Lines & Brackets — factory-correct routing and length to maintain brake system integrity at the lifted ride height.

Important notes

• This kit is engineered for 2015–2016 F-250 Super Duty diesel models without rear factory contact overload springs. Do not fit to F-350, dually, or gas-engine models.
• Maximum recommended tire size is 35"–37". Larger tires may contact suspension components or require trimming.
• Radius arm drop brackets preserve caster angle — alignment performed in-house as part of installation ensures handling and tire life are not compromised.

Why customers pick this at Road Runner

• Rough Country Lifetime Replacement Warranty backed by local technicians you can walk in and see.
• Caster-corrected geometry — drop brackets keep steering geometry stock-spec, so your truck drives straight and tires wear evenly.
• Professional alignment in-house after every lift install — no hunting for a third-party shop.
• Anti-wrap rear blocks engineered specifically for no-overload diesel F-250s — eliminates binding and unwanted axle wrap common to other kits.
• Mount and balance available for most customers — we do these every week and keep all Rough Country components in stock.

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