GMG 2.5″ RS4 exhaust with Labree mufflers
The last piece of my exhaust puzzle was the cat-back exhaust; having previously run a 2.25" APR downpipe and exhaust I needed something a little larger to mate up to the 2.5" JHM longtube headers.
After poking around I found S-Fore, a local forum member, parting out his S4. He had originally purchased a GMG RS4 exhaust, but found that the internal drone was too much. To rectify this little problem he replaced the GMG mufflers with Labree mufflers and hasn't looked back since. When I asked S-Fore to describe the sound, he said hands down it was the best sounding S4 exhaust. Ever.
Once the headers and exhaust are on I'll see how the quad tips fill the RS4 bumper; if it doesn't look right I'll have weld on the OEM RS4 tips. If the exhaust isn't loud enough, we'll cut out the resonators!
The tips measure 3.0" tall and 3.5" wide.

