Fabtech 19-20 Ford F450/F550 4WD Diesel 6in Rad Arm Sys w/Coils & Dl Shks

Fabtech is known for building tough suspension systems, and their 6-inch Radius Arm lift kit for the 2019-2020 Ford F450 and F550 Super Duty 4WD Diesel trucks is a prime example. If you're looking to upgrade your heavy-duty truck for serious on and offroad adventures, this system is designed to handle the extra demands that come with larger tires and tougher terrain. It's a complete overhaul of your factory suspension, adding strength and improving geometry for better performance.

This kit features tubular radius arms with a dimple-die side plate for added strength. These arms are specifically offset to give you the full turning radius needed for oversized tires, even with the Dana Super 60 front axle. Fabtech builds in 1 degree of caster to account for the lift height, and adjustable alignment cams let you fine-tune it further by an additional 1.5 to 2 degrees. The included American-made coil springs are preset during manufacturing to prevent settling over time, and they're designed to work with Fabtech shocks to increase wheel travel by up to 2 inches over stock. You also get a stout, box-style track bar bracket made from 1/4-inch thick steel to keep your axle centered under the increased lift, and a forged steel dropped pitman arm that's built to exceed factory specs.

This system has been proven over a decade in consumer, commercial, and military applications, showing its reliability under tough conditions. It's a well-built upgrade that properly addresses suspension geometry, setting it apart from other radius arm setups. When installing this kit, you'll want to ensure you have the necessary tools and refer to the manufacturer's instructions for proper alignment adjustments.