I fitted one to a screen I was trying on the Guzzi - poorly made pap I'm afraid. Very fiddly and awkward to adjust but it does work, bloody ugly though in my opinion. Best bet is to order the MRA spoiler (I got mine through Hein Gericke') it's a little bit more but 100% better quality. Fitted to a Givi screen it's sorted out my wind problems, matron.