S-Type Cat-Back™ Exhaust System 2013-2018 Audi C7 S6 4.0L V8 Turbo Automatic Transmission All Wheel Drive 4 Door With Electronic Exhaust Valves. Borla System Contains Exhaust Valve Simulators.
- System contains a Merge X-Pipe
- BORLA system is equipped with "Sound Suppressing Valve" simulators which ELIMINATES the valves