Skyjacker 2005-2012 Ford F-350 Super Duty 4 Wheel Drive (For 4-8.5in Lifts) Steering Damper KitSkyjacker(R) stabilizers dampen out the harshness of the highway, the shimmy from running the additional weight of larger tires and wheels and places control back into the drivers hands. Stabilizers also reduce the fatigue of the driver on a personal level by reducing the amount of physical strength it takes to guide those larger tires on and off the road. Changing the weak stock unit for a better performing replacement or adding dual steering