Hello there,
I recently got my 06 RC51 and would like to mod the rear brake with an underhung unit. Have been unable to locate the bracket. Any ideas?

Scotts Motorcycle Service has them including a Brembo caliper.
http://www.scottsms.com/store/index.php?main_page=product_info&cPath=68_97&products_id=105

I have the one above that sub is talking about just haven't installed it yet. To hot and all my other toys are taking up work space in my garage. Very trick piece and the price is good.