The 2023+ Super Duty introduced some new challenges, specifically pertaining to caster. The steering assist and Fordās 1Ā° ā 3.6Ā° 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.
When lifting the front of the Super Duty 3 ā 3.5ā³, the factory caster is reduced by approximately 1.5Ā°. For the 2020-23 Super Duty, we provide aĀ 2Ā° caster shimĀ which is enough to restore this caster and add a touch more ā unfortunately, this ātouch moreā is rarely enough for proper tracking. This leaves us recommending ourĀ Adjustable Radius ArmsĀ proven to add an additional 2.5Ā° of caster (when maxed). Combining the Carli Arms and 2Ā° shims results in a Super Duty on 37ā³ tires that holds a lane, and returns to center after a turn, better than a stock truck.
Enter the 2024 Super Duty ā Ford made ONE change to the platformā¦ They added an outer axle-mounted guard to prevent debris from entering the outside axle tube (highlighted inĀ REDĀ for clarity). 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 donāt affect the axial position of the axle, but rotate the knuckle/upper ball joint position rearward relative to the axleās outer ācā to increase caster.
Given the tight proximity of this debris shield to the axle tube, any caster shim overĀ 1Ā°Ā 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 ā reducing caster ā as the axle travels away from the frame); we had to figure out a solution.
ā 1/4ā³ Steel Construction, Powder Coated Finish
ā Bolt-on Installation
āĀ Fitment:Ā 2023+ Ford F250/350 4Ć4
