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Audi S3 Exhaust System Cat-back 8V (13-18) - Milltek Sport.

Regular price £1,152.02 £1,036.82 inc. VAT £864.02 excl. VAT

Audi S3 Exhaust System Cat-back 8V (13-18) - Milltek Sport.


The Audi S3 Milltek Exhaust is the perfect upgrade for anyone looking to improve their sound and aesthetics. Available in a multitude of different options, this exhaust system can be tailed to suit your style. This exhaust is designed as a direct replacement for the stock system on the Audi S3 8V 3 Door models.

This S3 Milltek Cat-Back Exhaust System connects from the catalytic converter backwards, replacing the centre section, rear section and exhaust tips. This system features an enlarged 3"/76mm pipework that allows for an increased high flow of air. The increase in airflow is what amplifies the exhaust note to a sportier tone, guaranteed to create car envy.


  • Constructed from 304L Grade Stainless Steel
  • Amplified aggressive sports exhaust tone
  • Direct replacement for the OE system
  • Choice of various Audi S3 Exhaust Tips

Need more options? We have a wide range of Audi S3 Exhaust Systems available for you to choose from.

Non-Resonated VS Resonated

When purchasing a new exhaust system it is vital to understand the different options available in order to purchase the perfect exhaust for you. This Audi S3 exhaust upgrade is available as either a Non-Resonated or a resonated system.

The resonator is in reference to the centre silencer along with the exhaust system. The resonator is essentially an echo chamber that removes certain frequencies from the exhaust tone, toning down the volume of the exhaust system. The resonated system is perfect for customers looking for a very slight modification in exhaust tone.

The non-resonated system replaces the centre silencer with a straight pipe, unleashing the full range of frequencies from the exhaust. The is ideal for customers looking to transform the sound of their exhaust, into a louder, more aggressive system.

Non-Valved VS Valved

This Audi S3 8V Exhaust comes available with the option for a valve. The valve allows you to control the volume and tone of the exhaust from the comfort of your cabin.

A non-valved system will produce a consistent exhaust tone, depending on what style of system you have. A valving system allows the user to control the tone of the exhaust using the different driving modes.

Require Fitting?

If you would like us to fit the Milltek Cat-Back for the Audi S3 8V, then get in touch with a member of the team to arrange it for you. Our expert technicians will have no problem fitting it and will allow you to have peace of mind.

Contact us?

You can contact a member of our team using our Contact page.

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