Audi S4/S5 B9 Non Sport Diff models - Non-Resonated (Louder) Cat-Back Exhaust System with Quad GT-90 Cerakote Black Trims Trackslag For those who want added

For those who want added audible emotion with ninja like sleeper styling

For those looking to take the style upgrade a stage further

The valves open or close depending on the mode selected - so you can keep sound levels in check or unleash the full potential of the engine

has a sportier exhaust note

This innovative axle back Venom exhaust system removes the rear silencer allowing the M240i to sing as it should from factory whilst remaining MOT and emissions compliant and significantly reducing weight

Audi S4/S5 B9 Non Sport Diff models - Non-Resonated (Louder) Cat-Back Exhaust System with Quad GT-90 Cerakote Black Trims Trackslag For those who want addedOur range of Cat Back systems are perfectly suited to cater for anyone looking to improve their sound and aesthetics, designed as a direct replacement for the original system, available in multiple configurations enabling the owner to choose the increase in volume of their exhaust and or add a more suitably aggressive tone. All our products are made from 304L Aircraft Grade stainless steel. This quality material will ensure that your Cat Back system