Audi S4/S5 B9 Non Sport Diff models - Resonated (Quieter) Cat-Back Exhaust System with with Quad Cerakote Black Oval Trims KTMX-BOW allowing the engine to operate

allowing the engine to operate more efficiently and to increase performance

Filter Width: 184mm (7

1dB) - Static 4

without glass filler

Audi S4/S5 B9 Non Sport Diff models - Resonated (Quieter) Cat-Back Exhaust System with with Quad Cerakote Black Oval Trims KTMX-BOW allowing the engine to operateOur 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