If your talking about the Bracket that is beneath the front fairing... It is actually one $70 horse shoe bracket that holds both mirrors and your instrument cluster. Could save money having a friend weld it back together for you.
I had my right break off about 4 months ago, and then my left one on the way home the other day. I just welded them back on and adding some gussets to the outside of both sides. The mirrors work better than before.