I had the new two inch shorter windscreen from BRP installed on my new 2012 RTS and it's great! When it is down all the way I can get a good breeze without turbulence. In the rain I raise it up and it covers me and my wife on back. I'm 5'3" and she is 5'1". One of the great things about being short and not to big is that you get great coverage by the bike and gas mileage!
Part number is as follows;
21900243. It's called "Touring Windshield" height 23" x width 22"
price is listed as $254.99. The dealer only charged me $200.00 as I was buying a new RTS.