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Upgrade the Audi S3 2.0 TFSI quattro Sportback 8V/8V.2 (2013-2018) with a Milltek Sport cat-back exhaust. Milltek...
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Upgrade the Audi S3 2.0 TFSI quattro Sportback 8V/8V.2 (2013-2018) with a Milltek Sport cat-back exhaust. Milltek builds each system around the car it fits: mandrel-bent T304L stainless pipework, a larger bore than stock for freer flow, and a tuned sound you choose, from quiet and refined to loud and uncorked.
Sound options
- Resonated options keep cruising drone down and sound closer to a refined sports car.
- Non-resonated (louder / race) options give the loudest, rawest note. Better for track days and weekend cars than daily commuting.
- Valved systems let the car switch between quiet and loud.
Choose your setup
- Sound: the system type and sound level.
- Tip Finish: the tailpipe trim.
- Optional Downpipe: add a Milltek catted or catless downpipe built to fit this cat-back. Pick Cat-Back Only to skip it.
Cat-back systems: compare every part number
| Part # | Sound | Tip finish | Pipe size | Fit time | Race/Track only |
|---|---|---|---|---|---|
| SSXAU533 | Non-Valved Race System. Non-resonated (louder) | Polished Quad Round | 3.00" (76.20mm) | - | - |
| SSXAU531 | Non-Valved Race System. Non-resonated (louder) | Polished Quad Oval | 3.00" (76.20mm) | - | - |
| SSXAU532 | Non-Valved Race System. Non-resonated (louder) | Cerakote Black Quad Round | 3.00" (76.20mm) | - | - |
| SSXAU530 | Non-Valved Race System. Non-resonated (louder) | Cerakote Black Quad Oval | 3.00" (76.20mm) | - | - |
| SSXAU534 | Non-Valved Race System. Non-resonated (louder) | Titanium Quad Round | 3.00" (76.20mm) | - | - |
| SSXAU537 | Non-Valved Race System. Resonated (quieter) | Polished Quad Round | 3.00" (76.20mm) | - | - |
| SSXAU535 | Non-Valved Race System. Resonated (quieter) | Polished Quad Oval | 3.00" (76.20mm) | - | - |
| SSXAU536 | Non-Valved Race System. Resonated (quieter) | Cerakote Black Quad Round | 3.00" (76.20mm) | - | - |
| SSXAU549 | Non-Valved Race System. Resonated (quieter) | Cerakote Black Quad Oval | 3.00" (76.20mm) | - | - |
| SSXAU538 | Non-Valved Race System. Resonated (quieter) | Titanium Quad Round | 3.00" (76.20mm) | - | - |
| SSXAU416 | Non-Resonated (Louder) | Polished Quad Round | 3.00" (76.20mm) | - | - |
| SSXAU413 | Non-Resonated (Louder) | Polished Quad Oval | 3.00" (76.20mm) | - | - |
| SSXAU415 | Non-Resonated (Louder) | Cerakote Black Quad Round | 3.00" (76.20mm) | - | - |
| SSXAU414 | Non-Resonated (Louder) | Cerakote Black Quad Oval | 3.00" (76.20mm) | - | - |
| SSXAU417 | Non-Resonated (Louder) | Titanium Quad Round | 3.00" (76.20mm) | - | - |
| SSXAU421 | Resonated (Quieter) | Polished Quad Round | 3.00" (76.20mm) | - | - |
| SSXAU418 | Resonated (Quieter) | Polished Quad Oval | 3.00" (76.20mm) | - | - |
| SSXAU420 | Resonated (Quieter) | Cerakote Black Quad Round | 3.00" (76.20mm) | - | - |
| SSXAU419 | Resonated (Quieter) | Cerakote Black Quad Oval | 3.00" (76.20mm) | - | - |
| SSXAU422 | Resonated (Quieter) | Titanium Quad Round | 3.00" (76.20mm) | - | - |
What comes with each cat-back
- SSXAU533: 1 x Centre Silencer Delete Pipe; 1 x Rear Silencer (non-valved); 4 x Polished Tip Assembly; Quad 100mm GT100
- SSXAU531: 1 x Centre Silencer Delete Pipe; 1 x Rear Silencer (non-valved); 4 x Quad Polished Oval Tip; 104x80mm Oval
- SSXAU532: 1 x Centre Silencer Delete Pipe; 1 x Rear Silencer (non-valved); 4 x Black Velvet Tip Assembly; Quad 100mm GT100B
- SSXAU530: 1 x Centre Silencer Delete Pipe; 1 x Rear Silencer (non-valved); 4 x Quad Black Velvet Oval Tip; 104x80mm Black Velvet Oval
- SSXAU534: 1 x Centre Silencer Delete Pipe; 1 x Rear Silencer (non-valved); 4 x Titanium Tip Assembly; Quad 100mm GT100
- SSXAU537: 1 x Centre Silencer; 1 x Rear Silencer (non-valved); 4 x Polished Tip Assembly; Quad 100mm GT100
- SSXAU535: 1 x Centre Silencer; 1 x Rear Silencer (non-valved); 4 x Quad Polished Oval Tip; 104x80mm Oval
- SSXAU536: 1 x Centre Silencer; 1 x Rear Silencer (non-valved); 4 x Black Velvet Tip Assembly; Quad 100mm GT100B
- SSXAU549: 1 x Centre Silencer; 1 x Rear Silencer (non-valved); 4 x Quad Black Velvet Oval Tip; 104x80mm Black Velvet Oval
- SSXAU538: 1 x Centre Silencer; 1 x Rear Silencer (non-valved); 4 x Titanium Tip Assembly; Quad 100mm GT100
- SSXAU416: 1 x Centre Silencer Delete Pipe; 1 x Rear Silencer Assembly (valve motor from the OE exhaust is required for fitment); 4 x Polished Tip Assembly; Quad 100mm GT100 Milltek note: GPF Back - Non-resonated (louder). Quad Round Polished Tips.
- SSXAU413: 1 x Centre Silencer Delete Pipe; 1 x Rear Silencer Assembly (valve motor from the OE exhaust is required for fitment); 4 x Quad Polished Oval Tip; 104x80mm Oval Milltek note: GPF Back - Non-resonated (louder). Quad Oval Polished Tips.
- SSXAU415: 1 x Centre Silencer Delete Pipe; 1 x Rear Silencer Assembly (valve motor from the OE exhaust is required for fitment); 4 x Black Velvet Tip Assembly; Quad 100mm GT100B Milltek note: GPF Back - Non-resonated (louder). Quad Round Cerakote Black Tips.
- SSXAU414: 1 x Centre Silencer Delete Pipe; 1 x Rear Silencer Assembly (valve motor from the OE exhaust is required for fitment); 4 x Quad Black Velvet Oval Tip; 104x80mm Black Velvet Oval Milltek note: GPF Back - Non-resonated (louder). Quad Oval Cerakote Black Tips.
- SSXAU417: 1 x Centre Silencer Delete Pipe; 1 x Rear Silencer Assembly (valve motor from the OE exhaust is required for fitment); 4 x Titanium Tip Assembly; Quad 100mm GT100 Milltek note: GPF Back - Non-resonated (louder). Quad Round Titanium Tips.
- SSXAU421: 1 x Centre Silencer; 1 x Rear Silencer Assembly (valve motor from the OE exhaust is required for fitment); 4 x Polished Tip Assembly; Quad 100mm GT100
- SSXAU418: 1 x Centre Silencer; 1 x Rear Silencer Assembly (valve motor from the OE exhaust is required for fitment); 4 x Quad Polished Oval Tip; 104x80mm Oval
- SSXAU420: 1 x Centre Silencer; 1 x Rear Silencer Assembly (valve motor from the OE exhaust is required for fitment); 4 x Black Velvet Tip Assembly; Quad 100mm GT100B
- SSXAU419: 1 x Centre Silencer; 1 x Rear Silencer Assembly (valve motor from the OE exhaust is required for fitment); 4 x Quad Black Velvet Oval Tip; 104x80mm Black Velvet Oval
- SSXAU422: 1 x Centre Silencer; 1 x Rear Silencer Assembly (valve motor from the OE exhaust is required for fitment); 4 x Titanium Tip Assembly; Quad 100mm GT100
Downpipe options: compare every part number
| Part # | Option | Fits with (Milltek) | Stage 2 ECU remap | Race/Track only | Pipe size |
|---|---|---|---|---|---|
| SSXVW264 | Catless Downpipe (Cast, Race/Track only) | Must be fitted with Milltek Sport cat-back system | - | Yes | 3.00" (76.20mm) |
| SSXAU381 | Catted Downpipe (Cast, 200cell HJS Catalyst, Race/Track only): needs Stage 2 ECU remap | Must be fitted with Milltek Sport cat-back system and requires a Stage 2 ECU remap | Required | Yes | 3.00" (76.20mm) |
| SSXAU423 | Catted Downpipe (200-CPSI Hi-flow Sports Catalyst, EC-approved): EC-Approved needs Stage 2 ECU remap | EC-Approved. Must be fitted with the Milltek Sport cat-back system and requires a Stage 2 ECU remap EC-Approved | Required | - | 3.00" (76.20mm) |
"Race/Track only" and "Stage 2 ECU remap" are shown only where Milltek states them. A dash means Milltek does not state it for that part.
What comes with each downpipe option
- SSXVW264: 1 x Cast Large-bore Catless Downpipe; 1 x Front Connecting Pipe Milltek note: Must be fitted with a Milltek Sport cat-back system.
- SSXAU381: 1 x Cast Large Bore Downpipe 200cell HJS Catalyst (Replaces MSAU616); 1 x Front Connecting Pipe
- SSXAU423: 1 x Large-bore Downpipe and 200-CPSI Hi-flow Sports Catalyst (EC-Approved); 1 x Front Connecting Pipe
Catted and catless downpipes
A catted downpipe keeps a catalytic converter in the downpipe. A catless downpipe (de-cat) replaces it with a straight pipe. Each option name above says which one it is.
Fitment
Audi S3 2.0 TFSI quattro Sportback 8V/8V.2, 2013-2018. US-market model listing. Confirm your exact model, engine and options before ordering, and message us if you are not sure.
About Milltek Sport
- T304L stainless steel, CNC mandrel bent.
- Designed and developed in Derby, UK with a US facility in Knoxville, Tennessee, and tested at the Nürburgring.
- Company founded in 1983.
Warranty
Milltek covers most products with a lifetime guarantee. Downpipes, hi-flow catalysts and any part with valves are covered for 2 years or 80,000 km, and electronic products for 2 years. Claims go through the authorized dealer you bought from, and cover the original purchaser only. Full terms: millteksport.com/Warranty.html
Notes
- Catless downpipes and other cat bypass parts replace emissions equipment. They are sold for off-road and competition use where local law allows. You are responsible for checking the rules that apply to your vehicle.
- Some downpipe options need a Stage 2 ECU remap. Read the option name before you order.
- Fitting times are Milltek estimates for a professional installer.
If you have any fitment questions, please feel free to reach out to our team via the contact methods below. If you are contacting us for any order status updates, please give us a call, or email us. We are a lean operation bringing you the best shopping experience possible. We are working on your orders as quickly as we can. We thank you for your patience.
- Call:
- Please reach out to us at (310) 231-0292 for sales inquiries if you are in the United States, Canada, Mexico.
- Email:
- For more in-depth product questions, fitment questions, product inquiries please email our performance specialists at online@autotalent.com.
- All other inquiries:
- Please direct your inquiries to the chat functionality on our website.
Returns Policy
If a product is ordered and not wanted, the UNUSED item can be returned for a 25% restocking fee unless otherwise specified. In some cases, we may offer the ability to return the item to us for a lesser restocking fee and then keep the balance as a store credit. To return an item, it must be in brand new condition with original packaging.
We cannot accept a return on special ordered or custom items.
Shipping is non refundable in either direction unless approved by AutoTalent. All items wanting to be return MUST be reported within 30 days of the original invoice date. No items will be returnable after 30 days. All products shipped from the AutoTalent facility are shipped via FedEx, USPS, or USPS. Some packages shipped from the manufacturer may or may not require signatures for package release.
Special Order Items
Some items may be special order specifically for the customer’s vehicle. These items generally require a deposit or paid in full. Once this deposit amount is notified to the customer and they agree to order the special order item, the deposit becomes non-refundable. These special order items cannot be returned or resold. Cancellations are not allowed on special order parts.
AutoTalent DOES NOT REFUND SHIPPING CHARGES. If you modify, install, or alter the item in any form, we cannot accept it as a return. We will not cover any expenses related to the product or installation, and you may be required to purchase a replacement.
** All cancellations that are requested that are NOT due to items not being in stock or delayed by the manufacturer are subject to a 5% processing fee. When you place an order with us we pay credit card fees that are NOT returned back to us. We will absorb these fees if we do not have the item in stock OR if you agree to the original ETA and that ETA is NOT met. If you decide to cancel for any other reason you will not receive this 5% fee back
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based.
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