mvengineer,
Does the bag remain rigid, even when empty? Is it rigid enough to serve as a backrest, even when empty or not packed fully/tightly?

 

D-Dawg, The BR3400 is more than strong enough empty for use as backrest. I just came in from trying to collapse wifes BR3400 and it held shape ok.

 

found the Xelement xs-689 fpr $99. Looks like it will meet the same need as the more expensive Saddlemen touring backrest bag. It is at Leatherup.com

 

which mounting kit did you use on your rider backrest? thanks

 

I used 54099-10

 

Just did mine today.Used the 54099-10 bracket and the smooth backrest.The install is a little more of a task than I thought it would be.I did as the instructions said and removed the battery and went step by step.HD's instructions look like I wrote them,very confusing.All and all it will be worth it on my long rides.Very grateful to have an adjustable back rest and a Road Zep. saddle.

 

Being the stuborn type I used the instructions as a guide and refused to remove the battery. Thought I had screwed the pooch when I pulled the 2nd bolt and the bank angle sensor dropped. I managed to get ahold of it and pull it back up so I could get a bolt in.