Perfect kit for 2018 f150 fx4. This makes the truck move smoother with 10 pounds of air and works great with loads and higher pressures. The truck no longer hangs with a loaded platform and feels much safer and more manageable. 2 cons: if you are going to do some serious off-roading you will need to remove the bag as the axle cannot go all the way down without ripping the bags. You also can't raise the back of the frame for servicing or use a two post lift unless you buckle the axles to keep them from sagging.