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

Built for diesel F250/F350 owners who need serious hauling capacity without sacrificing ride quality — this 6-inch lift kit combines coil-spring geometry correction with BDS's radius arm design to preserve driveline angles while gaining tire clearance. You get the lift you want, plus the truck geometry that keeps everything running true.

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

• Coil springs — engineered to carry the weight of a diesel engine while maintaining factory ride characteristics and handling response.
• Radius arm — corrects caster and keeps pinion angle true to OE spec, so your driveshaft runs straight and your steering stays predictable.
• Bumpstops — upgraded to work with the new ride height and prevent suspension bottoming on big impacts.

Out back

The rear setup scales to your load: choose a 4-inch block kit (with or without add-a-leaf springs for heavy towing) or step up to the full 6-inch leaf-spring assembly if you're running maximum payload. Both versions come overload-ready or standard, depending on how hard you plan to work the truck.

Pick your shocks

• BDS NX2 Nitro — comfortable daily driver that handles bumps without harshness, backed by BDS's legendary warranty.
• FOX 2.0 Performance Series — external reservoirs and adjustable damping for folks who demand fine-tuned handling on and off-road.

Important notes

• This kit is engineered for 2005–2007 Super Duty 4WD diesel models only. Check your VIN to confirm year and driveline before ordering.
• The radius arm geometry correction is critical to driveline health — installation by a qualified technician (like our team at Road Runner) ensures proper operation of all suspension and steering components.
• Verify your existing wheel offset and backspacing; the 6-inch lift may require wheel changes or spacers to avoid tire rub depending on tire size and rim width.
• If your truck is equipped with factory electronic brake proportioning or stability control, have those systems inspected post-install to confirm proper operation.

Why customers pick this at Road Runner

• BDS kits are engineered right here in Fort Worth — you're not buying marketing, you're buying proven suspension geometry.
• Our techs install these every week; they know the radius arm setup cold and get it right the first time.
• Local BDS warranty support means no runaround if anything goes wrong — we back every kit we sell.
• We stock both shock tiers, so you pick the ride feel that matches your budget and your truck's mission.

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