Audi S4 B6 - Non-Resonated (Louder) Cat-Back Exhaust System with GT-100 Cerakote Black Trims Audi > TT Mk2 > TTS quattro > 2008 to 2014 The resonated cat-back upgrade provides

The resonated cat-back upgrade provides a softer refinement which raises the game a little

06L121111F

without glass filler

Pre-gapped and ready to install

5db increase in sound levels when idle

Audi S4 B6 - Non-Resonated (Louder) Cat-Back Exhaust System with GT-100 Cerakote Black Trims Audi > TT Mk2 > TTS quattro > 2008 to 2014 The resonated cat-back upgrade providesOur 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