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 use. The F450 and F550 Super Duty feature a significantly 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, delivering 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, ensuring long-term reliability in harsh environments.
Fabtech’s precision-engineered suspension geometry and high-quality components set this system apart from traditional 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.
