Audi S4 B9 Non sport Diff models - Non-Resonated (Louder) Cat-Back with Quad Cerakote Black Trims Audi > S4 > 3.0 Turbo V6 B9 - Saloon/Sedan & Avant (Non Sport Diff Models) - Right Hand Drive Cars Only > 2016 and Later in fittings and joints

in fittings and joints

this enables a slightly louder sound with gases being less restricted

Fitment to later M140i models which have the PPF filter as standard will require basic engine tuning at time of fitment to cancel the EML light

deeper and more aggressive giving the desirable performance exhaust characteristics of a sport exhaust upgrade

which will help with increased exhaust flow and can dramatically change the sound

Audi S4 B9 Non sport Diff models - Non-Resonated (Louder) Cat-Back with Quad Cerakote Black Trims Audi > S4 > 3.0 Turbo V6 B9 - Saloon/Sedan & Avant (Non Sport Diff Models) - Right Hand Drive Cars Only > 2016 and Later in fittings and jointsOur 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