For sale, less than 1000 miles on both. Nothing wrong with them.
Mistershaft GT Rear Mufflers for E39 M5...List is $1998 (see below)
Mistershaft X-Pipe MODIFIED with Resonators...List is $698 (see below)
I modified the X-pipe with 12" stainless resonators to tone the exhaust note down slightly. After that, it was perfect. Resonators and labor to weld them in was an additional $200. You can now drive the car with the exhaust and have a conversation on the phone without the volume intruding into the cabin.
List is $2698 not including the modifications I made.
Mufflers only, $1600 picked up. Shipping at buyer's expense from 07423.
X-Pipe only, $450 picked up. Shipping at buyer's expense from 07423.
Take BOTH, $1900 picked up. Shipping at buyer's expense from 07423.
Installation available at additional charge if you're near Bergen Cty, NJ.