There is a kit you can get that comes w/ the mounting pieces. There is enough grommets and pushin pieces to set up a Medium Height Fixed windshield and small one. This way you can swap out the windshields easily on hot or off trail days.
The kit number is 861789900
What you get for this is 5 rubber grommets 8 push in knobs to attach to shield, one rubber piece that is supposed to go behind the windshield to stop it from bending, you probably won't need to use this on a medium fixed windshield.