These are what I use http://shop.touratech.co.uk/folding-...uda-900-r.html
There's a pivot in the arm which allows you to fold them over 180 degrees so that the mirror sits well out of the way over the cross brace of the handlebar.
Pic of them on the bike...
Pic of them folded when I had them on my Scram...
2002 black Tiger955i, 72000 miles and counting.
2012 black Tiger800XC, 40000 miles and counting.