Designed for the 2017 Ford F450/F550 4WD, Fabtech’s 6-inch 4 Link Conversion suspension system is engineered to handle demanding on-road and off-road conditions. The F450 and F550 feature a more robust suspension platform than the F250 and F350, requiring specialized heavy-duty components developed exclusively by Fabtech.
This system includes everything required to convert the front suspension to a true 4 Link design. Compared to a radius arm system, the 4 Link configuration delivers reduced caster change throughout the suspension travel, improving on-road stability and handling while providing increased articulation for off-road performance across varied terrain.
Fabtech’s 4 Link system has been proven through more than 10 years of service in consumer, commercial, and military applications. Precision-engineered suspension geometry combined with high-quality components delivers exceptional ride quality, durability, and long-term reliability for heavy-duty Super Duty trucks.
Each Fabtech component is expertly manufactured in-house and designed with specific features and benefits to create one of the most advanced front suspension systems available for the F450 and F550.








