The ICON Vehicle Dynamics Ford F-250 & F-350 Super Duty Radius Arm System is designed with adjustable caster cams for use with 2.5-3” lifts with the radius arm installed in the factory pivot, eliminating the need for caster bushings. They feature a sealed pivot bushing that minimizes road feedback and ensures a long life and quiet operation. Additionally, their fabricated, fully boxed design ensures strength and utilizes a profile optimized for tire clearance at full steering lock, making a 37” tall tire clear without coming in contact with the radius arm.