The screen or the deflector? I have an AeroFlow deflector on my GT windshield and it’s held on by 3M Velcro pucks. I also have an RS shield I run ‘naked’ in the summer and it mounts the same as the GT.
I checked AeroFlow site, and they seem to be out of deflectors. But I’m guessing an email to them will tell you were to find the 3M Velcro