Mercedes-Benz S350 W220 with Tech Pro Performance Valvetronic Exhaust System.

Performance cat-back valvetronic exhaust system Disclaimer: because this is a video, there maybe a difference in the sound compared to the real sound Techpro valvetronic exhaust system enables you to have full control of the sound your exhaust system perform! We have spent months developing this exhaust system that elevate your driving experience with the enhancement of a powerful exhaust system!