Up for sale is my ARK Performance DT-S catback exhaust system with Polished Tips for the 135i!
Pretty much brand new with only ~2,000 miles on it!
Sounds great, not obnoxious and really only loud when you get on it.
$850 shipped lower 48 states
Going a different route though so I need to sell this, my loss is your gain...
Located in Ontario, California (or Cerritos area), but willing to ship at buyer's expense.
The exhaust is still on the car, but can come off almost any day now.
Links to ARK's video and website listing
http://www.arkperformance.com/BMW-13...0301-0020d.htm