Designed for the 2017-2022 Ford F250/F350 4WD, Fabtech’s 8-inch 4 Link Conversion suspension system is engineered to deliver maximum suspension performance for both on-road driving and extreme off-road use. This advanced system replaces the factory radius arm suspension with heavy-duty 4 Link components for increased strength, control, and durability.
The 4 Link design minimizes caster change throughout the suspension travel, resulting in improved on-road stability and steering control. Off-road, the system provides greater articulation than a traditional radius arm setup, allowing the vehicle to traverse rugged terrain with confidence at all speeds.
Exclusive to this 8-inch system is Fabtech’s extended-length track bar, designed to correct the hyper-sensitive steering common in late-model Super Duty trucks. The track bar is 4 inches longer than stock and offset to the driver side using a heavy-duty 1/4-inch thick steel mounting bracket. This design keeps the track bar and drag link closer to parallel, reducing steering push and bump steer while allowing full steering lock with 15.50-inch wide tires on 4-3/4-inch backspace wheels.
This system includes Fabtech’s massive Dirt Logic 4.0 reservoir coilover conversion, providing outstanding off-road damping with a smooth and controlled on-road ride. The coilovers bolt directly into the factory coil spring bucket without modification, while the large 4-inch diameter aluminum remote reservoirs are mounted horizontally to allow full compression travel with oversized tires.
Fabtech’s 4 Link system has been proven through more than 10 years of service in rugged commercial and military applications, ensuring long-term reliability for daily-driven vehicles. Precision-engineered suspension geometry and premium components make this system the pinnacle of Super Duty suspension performance. A free 5-year or 60,000-mile powertrain warranty is included.
