The Audi S4 is one of the most popular euro-tuner cars to ever exist. The B9 S4 is arguably the best S4 ever with great chassis dynamics, a ridiculously fast shifting transmission, and a very tuner friendly 3.0L V6 turbo engine under the hood. Development of an Armytrix turbo back exhaust has been in the pipeline for a little while, with testing complete at Vivid Racing. This new exhaust features our famous Valvetronic system which allows the exhaust volume to be changed on the fly for those early mornings or late nights. Check it out the sneak peek below! Give us a call to preorder yours today.
