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.\n05-ON Ford SD Rear; PS; 2.0; R/R; 12.1/quot;; 0-1/quot; Lift\nFord F-250 Super Duty: 1999 - 2016; Ford F-350 Super Duty: 1999 - 2016; Ford F-550 Super Duty: 2005 - 2016; Ford F-450 Super Duty: 2005 - 2016