Fabtech’s 4 Link Conversion system for the 2017-21 Ford F250/F350 4WD (GAS) is engineered to deliver improved on-road performance while providing the capability to conquer rugged off-road terrain. This premium bolt-on system replaces the factory Radius Arm suspension and includes all components necessary to convert the truck to a true 4 Link front suspension.
By reducing caster change throughout the suspension travel range, the system enhances stability and control during on-road driving. Off road, the 4 Link design delivers greater articulation than a Radius Arm setup, enabling the vehicle to traverse challenging terrain with improved flexibility and performance at any speed.
This system includes Dirt Logic 2.25 Stainless Steel reservoir shocks for the front and non-reservoir shocks for the rear. These Dirt Logic shocks are precisely ride-tuned to work with Fabtech Coil Springs and oversized tires, providing exceptional ride quality both on and off road.
With over 10 years of proven performance in military applications, Fabtech’s 4 Link System represents the pinnacle of Super Duty suspension engineering. It features high-quality components and properly designed suspension geometry, backed by a free 5-year/60,000-mile powertrain warranty for added confidence.
Each Fabtech component is meticulously built in-house and delivers specific design benefits as listed below.








