See the last post in the thread below.
I have these and the quality is very good. CNC machined billet aluminum.
http://www.r3-forums.com/forum/289-...n/4537-sato-rearsets-installed.html#post84129
http://www.ebay.com/itm/For-YAMAHA-...hash=item61f1099705&vti=Color Blue&rmvSB=true