Milltek Sport Hi-Flow Sports Cat and Downpipe (Audi A6/A7/S4/S5) (SSXAU673)

Milltek Sport Large-Bore Downpipes are perfect when looking to improve both performance and sound. These downpipes are fabricated with a larger diameter than standard OEM parts, meaning that there is significantly more space for more gas to exit the engine and pass through, increasing efficiency. Used with our Catalyst Bypass Pipe, you can expect significant power-gain without any restriction on gas-flow made by a catalyst.

All our performance exhaust systems are designed with you in mind, and we cater to an ever-expanding range of vehicles. We believe in continuous evolution, and our research & development team work throughout the year to deliver the most in demand solutions to all your performance exhaust requirements. All of our products are made in the UK and distributed to more than 90 countries worldwide, making Milltek Sport one of the most accessible performance aftermarket brands on the market.

Vehicle fitment (Milltek Sport)

• Audi A6 55 TFSI (3.0 V6 Turbo) C8 (2019-)
• Audi A7 55 TFSI (3.0 V6 Turbo) C8 (2019-)
• Audi S4 3.0 Turbo V6 B9 - Saloon/Sedan & Avant (Non Sport Diff Models) - Left Hand Drive Cars Only (2016-)
• Audi S4 3.0 Turbo V6 B9 - Saloon/Sedan & Avant (Non Sport Diff Models) - Right Hand Drive Cars Only (2016-)
• Audi S4 3.0 Turbo V6 B9 - Saloon/Sedan & Avant (Sport Diff Models Only & Without Brace Bars) - Left Hand Drive Cars Only (2016-)
• Audi S4 3.0 Turbo V6 B9 - Saloon/Sedan & Avant (Sport Diff Models Only & Without Brace Bars) - Right Hand Drive Cars Only (2016-)
• Audi S5 3.0 V6 Turbo Coupe Only B9 (LCI - NON GPF ONLY- Sport Diff Models Only & WITH Brace Bars) - Left Hand Drive Cars Only (2019-)
• Audi S5 3.0 V6 Turbo Coupe Only B9 (NON GPF ONLY - Sport Diff Models Only & Without Brace Bars) - Right Hand Drive Cars Only (2017 a)
• Audi S5 3.0 V6 Turbo Coupe Only B9 (NON GPF ONLY- Sport Diff Models Only & WITH Brace Bars) - Right Hand Drive Cars Only (2017 and)
• Audi S5 3.0 V6 Turbo Coupe Only B9 (NON GPF ONLY- Sport Diff Models Only & Without Brace Bars) - Left Hand Drive Cars Only (2017 and)
• Audi S5 3.0 V6 Turbo Coupe/Cabrio B9 (NON GPF ONLY - Non Sport Diff Models Only) - Right Hand Drive Cars Only (2017-)
• Audi S5 3.0 V6 Turbo Coupe/Cabrio B9 (NON GPF ONLY- Non Sport Diff Models Only) - Left Hand Drive Cars Only (2017-)
• Audi S5 3.0 V6 Turbo Sportback B9 (NON GPF ONLY - Non Sport Diff Models Only) - Left Hand Drive Cars Only (2017-)
• Audi S5 3.0 V6 Turbo Sportback B9 (NON GPF ONLY - Non Sport Diff Models Only) - Right Hand Drive Cars Only (2017-)
• Audi S5 3.0 V6 Turbo Sportback B9 (NON GPF ONLY - Sport Diff Models Only & WITH Brace Bars) - Left Hand Drive Cars Only (2017-)
• Audi S5 3.0 V6 Turbo Sportback B9 (NON GPF ONLY - Sport Diff Models Only & WITH Brace Bars) - Right Hand Drive Cars Only (2017-)
• Audi S5 3.0 V6 Turbo Sportback B9 (NON GPF ONLY - Sport Diff Models Only & without Brace Bars) - Left Hand Drive Cars Only (2017-)
• Audi S5 3.0 V6 Turbo Sportback B9 (NON GPF ONLY - Sport Diff Models Only & without Brace Bars) - Right Hand Drive Cars Only (2017-)

Fitting time: 1-1.5 h (including removal of the original system).

TÜV / ABE available upon request

We currently ship within Europe only.

If a part is not available, we will contact you with an estimated wait time.

If you wish to return a product after receiving it, we offer a 14-day returns policy. Custom-made products are not eligible for return, and return shipping is at the customer's expense. Full delivery and returns terms are on the “Delivery Information” page — the link is at the bottom of the page.

Products come with a warranty, detailed in a certificate included in the box.

To make a valid claim, you must prove the damage was not caused by you and that the warranty certificate is valid.

Full terms are on the “Terms & Conditions” page — the link is at the bottom of the page.