Audi S1 - Non-Resonated (Louder) Cat-Back Exhaust System with Quad Polished Round Trims a6c6 The manifold is the key

The manifold is the key component part of every exhaust system on a naturally aspirated car

the Cobra Sport PPF Delete is the most cost-effective way to improve the sound of the stock M240i

The all-new GPF/PPF-Back quad exit performance exhaust with rear silencer perfectly compliments the 'jack of all trades' character of the M135i

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Sound - Engine at Idle: 64

Audi S1 - Non-Resonated (Louder) Cat-Back Exhaust System with Quad Polished Round Trims a6c6 The manifold is the keyOur 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