Audi S4/S5 B9 Non Sport Diff models - Resonated (Quieter) Cat-Back Exhaust System with Quad JET-100 Carbon Trims Audi > RS5 > B9 2.9 V6 Turbo Coupe (Non OPF/GPF Models) > 2017 and 2019 By using both polyalphaolefins (PAO)

By using both polyalphaolefins (PAO) and ester synthetics specially selected to minimise the amount of polymer used

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Audi S4/S5 B9 Non Sport Diff models - Resonated (Quieter) Cat-Back Exhaust System with Quad JET-100 Carbon Trims Audi > RS5 > B9 2.9 V6 Turbo Coupe (Non OPF/GPF Models) > 2017 and 2019 By using both polyalphaolefins (PAO)Our 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