SilverBolt
Hired Gun
They are camber adjustment bolts. From the factory our trucks do not have them. As you lift the front you will get negative camber. On the middle setting the camber is within spec. When you go to the top you will need the camber adjusters to bring it back into spec. They are cheap and easy to install and will require an alignment post install. Best solution is to install them when you do you perch adjustment. They can be purchased from Ford and also NAPA carries them.