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Vendor:
Milltek Sport
SKU:
SSXAU955
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Overview
Milltek Sport catted and catless downpipes, cat pipes and front pipes for the Audi SQ8 4.0 V8 Bi-Turbo (2020-2024). These parts open up the hot side of the exhaust, cut backpressure and sharpen throttle response. Pick the option that matches your exhaust: some are built to fit a Milltek cat-back, others bolt to the stock cat-back.
Compare every part number
| Part # | Option | Fits with (Milltek) | Stage 2 ECU remap | Race/Track only | Pipe size | Fit time |
|---|---|---|---|---|---|---|
| SSXAU955 | Catless Downpipe (Race/Track only) | - | - | Yes | 3.00" (76.20mm) | 3.50 to 4.50 hours |
| SSXAU956 | Catted Downpipe (Race/Track only) | - | - | Yes | 3.00" (76.20mm) | 3.50 to 4.50 hours |
| SSXAU1027 | Front Pipe+: Front Pipe Back System - Fits to OE Tailpipes - Does not require cutting - Does not fit models with fixed tailpipes | Front Pipe Back System - Fits to OE Tailpipes - Does not require cutting - Does not fit models with fixed tailpipes | - | - | 3.00" (76.20mm) | 2.00 to 3.00 hours |
"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 part number
- SSXAU955 (Large-bore Catless Downpipe): 1 x Heat Wrapped LH Catless Downpipe; 1 x Heat Wrapped RH Catless Downpipe; 1 x Downpipe fitting Kit for Non OPF Cars
- SSXAU956 (Large Bore Downpipes and Hi-Flow Sports Cats): 1 x Heat Wrapped LH Cat Downpipe; 1 x Heat Wrapped RH Cat Downpipe; 1 x Downpipe fitting Kit for Non OPF Cars
- SSXAU1027 (Front Pipe-back): 2 x Adapter to OE System; 1 x Active Centre Section; 1 x LH Connecting Pipe; 1 x RH Connecting PIpe; 1 x Rear Silencer Assembly; 1 x LH Aux Bracket; 1 x RH Aux Bracket; 1 x LH Valved Outlet Pipe; 1 x LH Non Valved Outlet Pipe; 1 x RH Valved Outlet; 1 x RH Non Valved Outlet 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 SQ8 4.0 V8 Bi-Turbo, 2020-2024. US-market model listing. Confirm your exact model, engine and options before ordering.
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.
- Fitting times are Milltek estimates for a professional installer.
Fitment
| Year | Make | Model |
|---|---|---|
| 2020–2024 | Audi | SQ8 |
Not sure? Text us your VIN and we’ll confirm.
Shipping & returns
Shipping: Orders ship via UPS, FedEx or USPS, from our facility near Los Angeles or directly from the manufacturer. Rates for many items are weight-based and shown at checkout. If you need it by a certain date, text us before you order.
Returns: Unused items in brand-new condition and original packaging can be returned within 30 days of the invoice date, with a 25% restocking fee unless otherwise specified. In some cases we can offer a lower fee with the balance as store credit. Shipping charges aren't refundable in either direction unless approved by AutoTalent.
Not returnable: special-order or custom items, and anything that has been installed, modified or altered.
Cancellations: free if the item is out of stock or we miss the ETA you agreed to. Other cancellations carry a 5% processing fee to cover card fees we can't recover. Special-order items can't be cancelled.
Damaged in transit? Report it to the carrier and to us within 48 hours, keep all packaging, and don't send anything back without our written approval.
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