Based on the $450 Cobra ones over at valkyrieblingandmore.com, four rail ones are hard to come by...
I wonder about fitment from other bikes, I bet these are good, I also bet that if there were easily
interchangable ones out there, we'd already know about it...
http://tinyurl.com/3qsykeh <------------ $50 ebay lid racks for a Harley
If your other question was about the guard rails on the saddlebags, it might be that the only
really good ones are the OEM ones, they're hard to find too... There's a couple of current
threads about some knock-offs that are pretty easy to get, some people are happy with
them, some not...
-Mike