Configured with FOX 2.5 Performance Elite shocks featuring a 2.5-inch impact extruded aluminum body, a massive 7/8-inch hard chrome plated heat-treated alloy steel shaft, an external reservoir that separates shock oil from high-pressure nitrogen, and a standard DSC (Dual Speed Compression) Adjuster for fully tunable compression control. Fully serviceable for a lifetime of use.
The BDS 4" Radius Arm Lift Kit is engineered for the 2020–2022 Ford F-450 Super Duty 4WD, delivering strength, durability, and reliable everyday performance. A radius-arm setup excels in simplicity, long-term dependability, and predictable handling — qualities particularly well suited to heavy-duty trucks like the F-450. Heavy-duty BDS radius arms handle serious workload demands while maintaining confident steering feel and excellent stability under towing and hauling conditions.
The kit includes Pro-Ride coil springs for proper lift height and ride quality, a forged drop pitman arm and heavy-duty track bar drop bracket for steering geometry correction, and your choice of shock absorber — BDS NX2 Nitro Series, FOX 2.0 Performance Series, or FOX 2.5 Performance Elite with DSC adjusters.
These kits are designed for the F-450 style front end. They do not work with the standard Ford Super Duty F-250/350 axle width.
