I purchased this screen for the new 2021 Guzzi 850. It fitted adequately but not perfectly, so I altered the mounting holes and "stop bracket" to allow the screen to sit a few mm. further back over the headlamp rim, and also to rake the angle of slope a bit less vertical. The screen now fits to my complete satisfaction but does induce some very slight wind roar, but nothing like as bad as the official Guzzi screen, and no turbulence. It looks very stylish, is light and is an excellent purchase...