Fitment: 2017-2022 F250/F350 4WD
Driveshaft Fitment: this rear block kit was only designed to fit Super Dutys with two-piece driveshafts out of the box. If your Super Duty has a one piece driveshaft then this is the kit for you.
Note for Air Spring/Load Leveling Systems: The lift blocks in this kit are not designed to work with aftermarket or factory add-on air spring/load leveling kits that attach to the bump stop tangs. Use of this type of air bag system will void all block warranties and can cause failure of the block bump stop tang.