Probably a question for BB55 - do the Barkbuster S1 vibrate and flap at anything over 30-40mph? I tried a R1200R recently that had Acerbis ones fitted - same idea ie clamped on the bar and free to float otherwise. I liked the draught protection but it was really disconcerting having these things flapping madly in my peripheral vision.
This is a genuine question for the very near future when I take delivery of my spanking brand new Dark White beastie in early Sept.
My guards do not flap at all. Survived a track session where the magic Ton was exceeded many times. And have been ok at "normal" road speeds
Seriously, they are fine. I don't see any shaking at all. Although the plastic guard looks flimsy, the brackets are pretty sturdy.
I'm happy with them.