FOX Performance Series shocks contain the latest in shock technology to transform the performance of your Truck or SUV. They use our race-proven damping control to provide a comfortable on-road ride and predictable off-road handling in even the toughest conditions.\n17-ON Ford SD Rear; PS; 2.0; IFP; 12.6/quot;; 1.5-3.5/quot; Lift\nFord F-550 Super Duty: 2017 - 2019; Ford F-450 Super Duty: 2017 - 2019; Ford F-350 Super Duty: 2017 - 2019; Ford F-250 Super Duty: 2017 - 2019