Just saw a gently used eisenmann sport exhaust muffler for the e60 n52 engine cars for 699 which is a great price. The thing lists for 1400 plus bucks and takes forever to get made and shipped out.

I personally am done with exhausts after having Remus and supersprint and finding the sound is not much different and the performance is better with stock OEM muffler/exhaust. However I alwasy did want eisenmann but at the time could not get it in time and went with supersprint.

Also remus and supersprint are only a couple pounds lighter than the stock can which is sad.

But nonetheless a good deal on a nice exhaust

i dont have the link but I searched on ebay "bmw exhaust" and it was a few pages in but you could search eisenmann insteaed