I have a VERY good condition base support rack system for E91. It comes with all the keys and instructions. This was on my 2006 E91, so as long as you have the wagon with the normal rails (not the low profile ones) these should work.
I also have the bike attachment in excellent condition as well.
Would love to sell together, but will separate if I have to.
Would like to get:
$150 for the bars
$100 for the bike attachment
If bought together, I'll do $250 shipped (i'll cover shipping). Local pick up in San Diego is available and completely preferred!