Hi
Does the 2009 FXST share the same frame/chasis with the 2009 FLSTSB crossbones? I found this rear custom fender on ebay that Id like to put on my crossbones http://www.ebay.com/itm/331445948023...%3AMEBIDX%3AIT
its the 200mm wide rear tire model.

 

If you look at one of the on-line parts websites, like this one, you can compare them. Looks to me as if both models use the same fender etc.