Fabtech 19-20 Ford F450/F550 4WD Diesel 6in Rad Arm Sys w/4.0 & 2.25Dl

If you're looking to significantly upgrade your 2019-2020 Ford F450 or F550 4WD Diesel for serious off-road adventures or to fit larger tires, this 6-inch Radius Arm lift kit from Fabtech is a robust solution. This system is specifically engineered for the heavier-duty chassis of the F450 and F550, offering enhanced strength and improved suspension geometry over stock components. It's designed to handle the challenges of both daily driving and demanding off-road conditions, building on over a decade of proven performance in various applications.

At the heart of this kit are the tubular Radius Arms, featuring a dimple-die side plate for added strength and an offset design that allows for a full turning radius even with wide tires. These arms come with 1 degree of built-in caster for the increased ride height, and adjustable alignment cams provide an additional 1.5-2 degrees of caster adjustment for precise alignment. The kit also incorporates Fabtech's Dirt Logic 4.0 coilovers, which feature a massive 4-inch diameter stainless steel body and a 1.25-inch NitroSteel piston rod for exceptional corrosion resistance and durability. These coilovers use American-made coil springs to properly handle the weight of your Super Duty and include remote aluminum reservoirs to dissipate heat for consistent damping performance over rough terrain. A 1/4-inch thick steel track bar bracket is included to re-center the front axle under the vehicle after the lift is installed, ensuring proper alignment.

This comprehensive system replaces key factory suspension components with stronger, purpose-built parts. The Dirt Logic 2.25 shocks are designed to complement the coilovers and provide excellent damping for the rear of the vehicle. When installing this kit, you'll want to ensure you have the necessary tools for working on heavy-duty truck suspension, and it's always a good idea to consult the manufacturer's installation guide for specific procedures and torque specifications.