If you are interested in a larger than stock aftermarket windscreen for the GrandVista 250, here are my findings on the subject. In the USA GIVI sells the 290ST (23.9"H x 27.6"W) and the 290-DT (26.25"H x 22"W). EuroNetBike.net sells ISOTTA replacement windscreens for the GrandVista (and many other scooters), and they ship to America, and even with their $35 shipping charge, the ISOTTA's are larger than the GIVI's, and much lower cost. ISOTTA makes two different windscreens for the GrandVista, one is 29.1339"H x 24.8"W, and the other is 9/10 of an inch shorter and the same width. I just ordered the shorter one for $104 delivered (to Pennsylvania). These ISOTTA's do not use support brackets like the GIVI's do, but the customer service at EuroBikeNet told me that flexing and cracking has never been a problem with the ISOTTA's. They did tell me that if the ISOTTA's high speed flexing (if any) bothers me, that I should jam a piece of styrofoam in between the base of the windscreen and the front of the instrument pod.-- Fred
