Fabtech 11-16 Ford F250/F350 4WD 4in 4Link Sys w/4.0 & 2.25Fabtech's 4in 4 Link Conversion System for the Ford F250 F350 is designed to provide maximum suspension performance for both on and offroad use. The system replaces the factory Radius Arm suspension with heavy duty 4 Link components for increased strength and functionality. The system will provide near zero caster change throughout the travel range which benefits on road driving. When offroad the 4 Link system will provide more articulation than a