Audi S4/S5 B9 Non Sport Diff models - Non-Resonated (Louder) Cat-Back Exhaust System with Quad GT-100 Polished Trims Audi > RS4 > B8 4.2 FSI quattro Avant > 2012 to 2015 60BHP more than the original

60BHP more than the original A45

designed as a direct replacement for the original system

They are made to maintain an enlarged diameter through the system to best optimise the gas-flow throughout the system

9mm pipework and replaces the centre resonator/silencer

Audi S4/S5 B9 Non Sport Diff models - Non-Resonated (Louder) Cat-Back Exhaust System with Quad GT-100 Polished Trims Audi > RS4 > B8 4.2 FSI quattro Avant > 2012 to 2015 60BHP more than the originalOur 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