ARMYTRIX has just released this new Audi A4 Sedan or Avant exhaust for the 2WD B9 (2016-present) 2.0 TFSI vehicle. The full valvetronic exhaust system is available as a catback or turboback system. The quad tip muffler is only compatible with the S4 style quad diffuser on the the non S-Line rear bumper or with the S4 rear diffuser on a S-Line rear bumper as pictured. Tips are available in matte black, titanium, or chrome with the ARMYTRIX logo. The valvetronic system like all ARMYTRIX exhaust works using a remote control key FOB or the iPhone app to open and close the valves to change the sound. Check out the pictures and videos below! If interested in ordering this system, please contact us.