mine is rubbing also but i got MR downpipe 3" - iam thinking to install extra washers on first lower bar to correct this problem or just get stiffer hangers mine touches just a little but its rubbing on bumps... oh well :-)

 

My Helix V2 3" downpipe is hitting my frame. I have a UR 3" High Flow cat and stock exhaust bolted all together. I just ordered the Kartboy hangers.. hopefully that works.