Audi S4/S5 B9 Sport Diff without Brace Bars - Non-Resonated (Louder) Cat-Back Exhaust System with Quad GT-100 Titanium Trims Audi > A4 > 2.0 TFSI B9.5 Quattro Saloon & Avant (Non-OPF NAS Models inc Mild Hybrid & Without Brace Bars) > 2021 and Later Available in Pro-Series Black finish

Available in Pro-Series Black finish

9mm bore pipework and fits from the turbo to front pipe replacing the catalyst

We replace the original thrust bearing for TTE upgrade 360 deg that is made in-house for long term durability

with potent engines and engaging handling

Then concentrated on the design of the silencer

Audi S4/S5 B9 Sport Diff without Brace Bars - Non-Resonated (Louder) Cat-Back Exhaust System with Quad GT-100 Titanium Trims Audi > A4 > 2.0 TFSI B9.5 Quattro Saloon & Avant (Non-OPF NAS Models inc Mild Hybrid & Without Brace Bars) > 2021 and Later Available in Pro-Series Black finishOur 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