I'd be calling them up, never seen a set of pipes that didn't come with flanges on them, I've got a set of Longshots in the garage and they have the flanges on the,. I've also ordered two different sets of exhaust within the last mnth and both came with flanges. BTW, what parts are you missing?
I am missing the two chrome muffler clamps, a couple of bolts, and of course the flanges.
I had my stock pipes off and was ready to put the new ones on when I realized this...I was just not sure if there was some way to re-use the old flanges.....So, because I am not willing to be without my bike for even one day, I re-installed the old pipes and will start over once I get the right parts to do the job.
Call Dennis Kirk customer service and give them your order number and tell them everything that is missing. Request they overnight the parts to you or replace the system with a new one and get an RMA number to return the bad system to them.
I tried to call them today, but of course they are not open on Sunday. I will call right away tomorrow morning and get them to make it right.
Thanks for the advice.