It's a good thing your bike does have rack eyelets, but in case someone reading this thread doesn't and would like to use a rear rack you can use an Arkel Randonneur rack. I have one on my 7.5 FX and it works great, very stable. I just recently bought this rack and a Tailrider trunk bag and the combination works very well, it doesn't shift around or bounce at all.

http://www.arkel-od.com/us/all-categ...neur-rack.html