4 Inch Lift Kit w/ Radius Arm | FOX 2.5 Performance Elite Coil-Over Conversion | Ford F250/F350 Super Duty (17-19) 4WD | Diesel

Built for diesel Super Duty owners who need 4 inches of front lift, 37-inch tire clearance, and rock-solid steering geometry all in one kit — this BDS Suspension radius arm lift with FOX 2.5 Performance Elite coil-over conversion transforms your 2017–2019 F-250 or F-350 4WD into a capable, comfortable hauler that handles pavement and rough terrain alike.

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

• FOX 2.5 Performance Elite Coil-Over Shocks — Diesel-tuned 2.5-inch diameter shocks with remote reservoir, DSC adjusters (10 low-speed and 12 high-speed compression settings), and black anodized aluminum body for superior cooling and on-road/off-road comfort.
• Heavy-Duty Tubular Radius Arms — Factory-location mount with caster correction geometry and OE-style rubber bushings for smooth, quiet operation across all lift heights.
• Forged Drop Pitman Arm & Track Bar Bracket — Minimizes steering angle and maintains axle centerline through suspension travel for corrected geometry and responsive handling.
• Sway Bar Relocation & Brake Line Brackets — Ensures clearance and safe routing of critical brake lines and suspension links.

Out back

High-strength fabricated lift block, longer u-bolts, brake line brackets, and a matching set of FOX Performance shocks deliver rear support that mirrors your front capability.

Important notes

• Maximum tire size: 37" x 12.5"
• Front lift height: 4 inches via coil-over conversion.
• Rear lift height: 2 to 3 inches depending on block configuration.
• Radius arms preserve factory caster correction geometry — essential for steering accuracy and tire wear after lifting.
• Compatible with 2017–2019 Super Duty; tag compatibility includes later model years (2020–2022) for reference — confirm fitment when ordering.

Why customers pick this at Road Runner

• Locally backed BDS Suspension warranty — our techs install these kits every week and know every bolt.
• Radius arm design corrects caster and steering geometry so your truck drives straight, not wandering.
• FOX 2.5 Elite shocks tuned for diesel weight — smooth on the highway, composed in the rocks.
• Remote reservoir keeps shocks cool during sustained climbs and descents.
• Professional install in our shop for most kits — your truck ready to roll before you leave.

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