Made of high quality T304 stainless steel, this Armytrix catback exhaust system, intended for the Audi S4 B9, features active valves (valvetronic) allowing the exhaust tone level to be adjusted via remote controller or app. Very aggressive while valves are open, this exhaust remains comfortable with closed valves, offering anyway a unique looking thanks to its 3.5" / 90mm tailpipe set available with chrome, black, carbon fiber or blue titanium finish. Delivered ready to install with instructions and assembly hardware, Armytrix exhausts have a finish, manufacturing quality and an exclusive sound, making the brand a benchmark in the premium segment.

- Select your tailpipes -

Direct mounting

Diameter : 2 x 2.5" / 63mm

High quality T304 stainless steel

3.5" / 90mm chrome, black, carbon fiber or titanium blue tailpipes

Active valvetronic system

Valves operated via remote controler or mobile application

APP compatible with Android and IOs

Aggressive sound

Mounting kit included

Assembly instructions included