CLI Radius Arms

The Carli Radius Arm Drops for 3.5" lifts were designed to fix this problem once and for all. The bolt-on design is a simple and easy installation that will provide the necessary increase in caster at a lower price point than installing the full Carli Radius Arm System and are compatible with stock OR the Carli Adjustable arms. Given the tight proximity of this debris shield to the axle tube, any caster shim over 1 will cause contact. Unfortunately, these trucks come with low caster from the factory compounded by the loss of caster from lifting the truck (radius arms tilt the axle forward reducing caster as the axle travels away from the frame); we had to figure out a solution. The 2023+ Super Duty introduced some new challenges, specifically pertaining to caster. The steering assist and Ford's 1 3.6 allowable caster range seems to work alright for those equipped with stock, relatively low-mileage Super Duties but, once a lift or oversized tire enters the equation, the handling at this low caster specification leaves us wanting. Enter the 2024 Super Duty Ford made ONE change to the platform They added an outer axle-mounted guard to prevent debris from entering the outside axle tube. The issue is in the functionality of the ball-joint mounted caster shims we provide in our 05-23 Super Duty Systems to correct the caster. These shims don't affect the axial position of the axle, but rotate the knuckle/upper ball joint position rearward relative to the axle's outer "c" to increase caster. When lifting the front of the Super Duty 3 3.5, the factory caster is reduced by approximately 1.5. For the 2020-23 Super Duty, we provide a 2 caster shim which is enough to restore this caster and add a touch more unfortunately, this "touch more" is rarely enough for proper tracking. This leaves us recommending our Adjustable Radius Arms proven to add an additional 2.5 of caster (when maxed). Combining the Carli Arms and 2 shims results in a Super Duty on 37 tires that holds a lane, and returns to center after a turn, better than a stock truck. CARLI 23+ FORD F250/350 4X4 RADIUS ARM DROP BRACKETS - 3.5" LIFT.