6 Inch Lift Kit w/ Radius Arm | Ford F250/F350 Super Duty (05-07) 4WD | Gas

Built for Super Duty owners who need serious payload and towing capacity without sacrificing ride quality — this 6-inch lift kit combines a radius arm front suspension with a leaf-spring rear to preserve your truck's geometry and driveline angles. You get maximum tire clearance for 37-inch tires and the geometry stays true, so your driveshaft and transfer case stay in their sweet spot.

Installed and serviced at Road Runner Wheels & Tires. Most kits go in the same day. Call (678) 400-6467 to schedule.

What you get up front

• Radius arm suspension — maintains caster and pinion angle while the truck climbs, keeping steering feel consistent and driveshaft wear predictable across the full lift range.
• Coil-over shocks — tuned to absorb bump and rebound without wallowing, whether you're empty or loaded down with payload.

Out back

Rear lift comes as either a 4-inch block with optional add-a-leaf (for extra load capacity) or a full 6-inch leaf-spring set. Choose "with overload" if you regularly carry heavy cargo or tow; "without overload" if you prefer a smoother ride on lighter duty.

Pick your shocks

• BDS NX2 Nitro Series — comfort-tuned for daily driving, responsive off-road, solid all-around value.
• FOX 2.0 Performance Series — premium internal floating piston design with velocity-sensitive damping for advanced terrain control and longer service life.

Important notes

• Kit is engineered for 05–07 Super Duty 4WD gas engines only. Do not fit to diesel models.
• Maximum tire size is 37 inches. Backspacing and offset must clear the radius arm and coil-over assembly — confirm wheel specs with our team before ordering.
• Radius arm geometry is factory-matched to preserve pinion angle and driveshaft U-joint life. Do not modify bumpstops or add shims without BDS engineering approval.

Why customers pick this at Road Runner

• BDS radius-arm kits maintain OEM driveline geometry — your truck stays balanced and predictable, not cranked and misaligned.
• Factory-backed warranty honored locally — no shipping hassles, no third-party runaround.
• Our technicians install these every week — they know the fastener torque specs, the shock valving, and the radius-arm preload by heart.
• Shock choice is yours — go budget-smart with Nitro or invest in FOX's premium damping without surprises.
• Overload and add-a-leaf options let you dial in the exact ride and load rating your work demands.

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