Fabtech 6" Radius Arm Lift Kit for Ford F450/F550 Super Duty Suspension Upgrade

Fabtech 6" Radius Arm Lift Kit for Ford F450/F550 Super Duty Upgrade your Super Duty — The Fabtech 6" Radius Arm Lift Kit is engineered specifically for Ford F450 and F550 trucks, delivering strength and performance for heavy-duty on- and off-road use. Built to handle oversized tires and demanding applications, this system draws on over a decade of proven service in consumer, commercial, and military vehicles. Key Benefits Purpose-built strength: Tubular radius arms with dimple die side plates for superior rigidity and long life. Optimized geometry: 1° of built-in caster plus adjustable alignment cams for an additional 1.5–2° caster correction to improve handling at increased ride height. Improved ride quality: American-made coil springs preset during manufacture to prevent settling and tuned for compliant on- and off-road comfort. Enhanced wheel travel: Allows approximately 2" more wheel travel when paired with Fabtech shocks. Centering and durability: Heavy-duty 1/4" track bar bracket repositions and centers the axle while resisting deflection through full travel. Reliable steering: Forged, dropped pitman arm made from high-strength steel to meet or exceed factory specs and maintain steering geometry. Why Choose Fabtech Every component is engineered to work together — from radius arms to springs and brackets — creating a complete suspension solution that restores proper geometry at lift height while adding durability for heavy use. Ideal for owners who demand a robust upgrade for towing, hauling, or extreme off-road performance.