If you're looking to take your 2019 Ford F450 or F550 Super Duty to the next level, the Fabtech 6" Radius Arm lift kit is where it’s at. This isn't just any lift kit; it's designed specifically for the heavy-duty demands that come with these beasts. Unlike the F250 or F350, the suspension on the F450 and F550 is built tougher, and that means you need parts that can keep up. Fabtech nails it with this kit, giving you a solid upgrade that not only enhances strength but also opens the door for fitting oversized tires without breaking a sweat.
What I love about this Radius Arm system is how it’s been battle-tested over the last decade across consumer, commercial, and even military applications. You know it’s reliable when it’s been put through that kind of paces. The components are high-quality and the suspension geometry is spot-on, which is a game changer for a lifted rig like this. Each part is crafted with specific features that really make a difference in performance.
The Radius Arms themselves are a standout feature, constructed with tubular design and dimple die side plates for that extra strength. They’re offset to ensure you get the full turning radius out of the Dana Super 60 front axle, even with those wide tires. Plus, the built-in 1 degree of caster and adjustable alignment cams give you a bit of leeway—1.5 to 2 degrees of caster adjustment to be precise. It’s all about that sweet spot for ride height and handling.
Then there’s the Dirt Logic 4.0 conversion, which is just a beast. The 1/4 brackets work with the factory coil bucket, making it easy to bolt in the hefty Dirt Logic 4.0 Coilover. We’re talking a 4-inch steel body and a 1.25 NitroSteel piston rod that’s built to resist corrosion and hold up against the roughest conditions. Those American-made coil springs? They handle the weight of your F450 or F550 like a champ, giving you a ride that feels smooth even when you’re tackling tough terrain at speed. And let’s not forget the remote aluminum reservoir, which keeps things cool for consistent damping.
So, if you’re serious about off-roading or just want to show off a bit on the streets, this Fabtech lift kit is a solid choice. It’s built for those who know what they want and won’t settle for anything less.
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

Fabtech is an aftermarket automotive company that specializes in creating suspension parts for various pick-up trucks, SUVs, and other offroad vehicles. They have been doing the business for more than 20 years and have consistently provided their customer products that are top-notched and have garnered multiple awards for its innovative design. Today, they have established their brand as one of the leading companies in the market.
Advanced Manufacturing FacilityThe company uses advanced technology to its advantage in creating its products. By utilizing the most high-tech software available, they are able to create designs that are on the cutting edge. All their works and manufacturing processes are done in house using their 100,000 sq feet facility. It houses multiple laser cutters, forming equipment, CNC machines, robotic welders not to mention the leading skilled welders and engineers that help the company create a consistent product that has the same high quality expected from them.
Fabtech creates their product to be easy to install and should provide a trouble-free experience to all their clients. Their product comes with all the necessary hardware needed and is a direct fit to the original parts’ location.
All their products have been tried and tested rigorously to make sure that it passes the high-quality standard the company has imposed on itself. This allows their customers to have a product that is superior to its competitors and functions the way it’s supposed to do.
Purchase Fabtech Products at Vivid RacingIf you want a suspension to upgrade for your vehicle that would be able to improve the way your car look and perform, then Fabtech is the brand for you. They offer products for different vehicles makes such as the ones from Toyota, GM, Ford, Nissan, Chevy and Jeep to name a few. Visit Vivid Racing and check out the list of their products that would fit your specific vehicle.