Available to Order
Not sure which one? Ask us to confirm fitment first →For UK customers, prices include VAT, customs and delivery unless checkout states otherwise. Outside the UK, shipping is shown at checkout and local customs and taxes remain your responsibility.
Some products are made to order, imported or custom built. If timing matters, contact us before ordering and we will confirm the expected delivery timeframe.
We confirm build spec, lead time and delivery arrangements with you before any money moves. Prefer to talk it through first?
| Specification | Details |
|---|---|
| Brand | Milltek Sport |
| Product | Cat-back |
| Application | LHD S4 B9 3.0 turbo V6 Saloon/Avant 2016+ or non-GPF S5 B9 3.0 turbo V6 Sportback 2017+. Sport differential, no brace bars. |
| Pipe diameter | 63.5 mm |
| Construction | 304L stainless steel |
| Sound configuration | Resonated, Non-resonated |
| E-mark | Resonated: yes; non-resonated: no |
| SKU / part number | See the exact option table above |
Choose how much of your V6 you want to hear.
A resonated Milltek adds character with more silencing, while the non-resonated version makes the V6 more prominent. Both finish the car with quad tailpipes and valved rear silencers. This is the left-hand-drive system for an S4 Saloon or Avant, or S5 Sportback, with the sport differential and no brace bars.
SKUs: SSXAU694, SSXAU695, SSXAU696, SSXAU697, SSXAU698, SSXAU699, SSXAU700, SSXAU701, SSXAU702, SSXAU703, SSXAU704, SSXAU705, SSXAU721, SSXAU722
Choose resonated if you want the extra silencing of a resonator, particularly for a car that spends time on longer journeys. Choose non-resonated if a louder exhaust note is your priority. The change is in the silencer layout; a titanium or carbon tip option changes the finish, not the material of the whole system.
A resonated system is the more restrained choice, but cabin sound still depends on the engine load and the other exhaust parts fitted. The resonator reduces sound but does not eliminate every low-frequency cabin note.
Polished tips make the quad outlets stand out; black blends them more closely with a dark diffuser. Brushed titanium gives a muted metallic finish, while burnt titanium adds a blue-toned accent. Choose the sound and vehicle-specific version first, then the finish you want to see on your Audi. Carbon tips add a visible carbon-fibre finish. These are tailpipe-finish choices; the exhaust body is 304L stainless steel.
| Version | Tailpipe finish | SKU | Price |
|---|---|---|---|
| Resonated | Quad GT-100 Polished | SSXAU694 | GBP 2,872.07 |
| Resonated | Quad GT-100 Cerakote | SSXAU695 | GBP 2,872.07 |
| Resonated | Quad GT-100 Titanium | SSXAU696 | GBP 3,212.44 |
| Resonated | Quad GT-100 Burnt Titanium | SSXAU697 | GBP 3,563.80 |
| Resonated | Quad Polished Oval | SSXAU698 | GBP 3,054.52 |
| Resonated | Quad Cerakote Black Oval | SSXAU699 | GBP 3,245.46 |
| Non-resonated | Quad GT-100 Polished | SSXAU700 | GBP 2,683.79 |
| Non-resonated | Quad GT-100 Cerakote Black | SSXAU701 | GBP 2,683.79 |
| Non-resonated | Quad GT-100 Titanium | SSXAU702 | GBP 3,024.16 |
| Non-resonated | Quad GT-100 Burnt Titanium | SSXAU703 | GBP 3,375.52 |
| Non-resonated | Quad Polished Oval | SSXAU704 | GBP 2,866.24 |
| Non-resonated | Quad Cerakote Black Oval | SSXAU705 | GBP 3,057.18 |
| Resonated | Quad JET-100 Carbon | SSXAU721 | GBP 3,154.69 |
| Non-resonated | Quad JET-100 Carbon | SSXAU722 | GBP 2,966.41 |
Vehicle-specific connecting pipework, a front silencer or front silencer replacement pipes according to the chosen version, valved rear silencers, mounting brackets and the selected quad tips.
LHD S4 B9 3.0 turbo V6 Saloon/Avant 2016+ or non-GPF S5 B9 3.0 turbo V6 Sportback 2017+. Sport differential, no brace bars.
The sport differential, brace bars and steering side change the pipework needed under the car. Match those details to the system above. The kit is for the turbo petrol V6, not the later diesel S model. Professional fitting lets the installer align the pipes, rear silencers and tips before tightening the system.
For UK customers, prices include VAT, customs and delivery unless checkout states otherwise. For customers outside the UK, local customs and taxes remain your responsibility, and shipping is shown at checkout. If a shipping option is not available, email us and we will prepare a tailored quote.
Many of the products we sell are made to order, imported or custom built, so a lead time may apply. If you need a part urgently, contact us before ordering and we will confirm the expected delivery timeframe and process.
LHD S4 B9 3.0 turbo V6 Saloon/Avant 2016+ or non-GPF S5 B9 3.0 turbo V6 Sportback 2017+. Sport differential, no brace bars. Match those details before choosing the tailpipe finish.
We would choose the resonated construction when more silencing matters to you. Engine load and other exhaust modifications still affect the sound inside the car.
Model year, engine, drivetrain, hardware and existing modifications can all change what fits. Check the applications and supplier notes above, or send us your exact vehicle and setup before ordering.
Send us your vehicle, year, current setup and any fitting date, event, trip or deadline before ordering. We will help check fitment, product choice and timing.
