Designed for the 2019-2022 Ford F450/F550 4WD, Fabtech’s 6-inch Radius Arm lift kit is engineered to handle demanding on-road and off-road conditions. The F450 and F550 Super Duty feature a more robust suspension platform than the F250 and F350, requiring specialized heavy-duty components developed specifically by Fabtech.
This Radius Arm system is a complete upgrade to the factory suspension, providing increased strength and durability for use with oversized tires. The design has been proven through more than 10 years of service in consumer, commercial, and military applications, delivering long-term reliability and performance.
Fabtech’s precision-engineered suspension geometry and high-quality components distinguish this system from conventional radius arm suspensions. Each component is designed to work together to improve ride quality, steering control, and overall suspension performance while maintaining proper driveline and steering angles.
