Bov me old mucker, MRA do make a flip screen, Ive got one on my bike. Take a look at the Album link (top of page) and check out Gizzit's Blackbird piccy. Also, take a look at the following link
http://www.mra.de/Marken/HONDA/CBR1100.HTM
I got mine from HPS (
http://www.bikehps.com/ ), excellent company, very friendly and helpful. The 'touring windshield' is not one they normally stock but they were able to get one in from Germany for me. It only took about a week. I have to say that it is fantastic. The fit and finish is superb and it provides very relaxing high speed comfort. Up to 120mph (on a track of course!) without having to duck down much. It cost about £65.00 if I remember correctly and I would definately recommend it, it is worth every penny.
Don't bother with MPS for ordering, I tried them first and couldnt get them to understand what I needed at all!
Cheers, Gizzit.