Milltek Sport Cat-Back Exhaust - 2019+ Audi RS7 C8 4.0 V8 bi-turbo

Upgrade the Audi RS7 C8 4.0 V8 bi-turbo (2019+) 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.

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

What comes with each cat-back

• SSXAU903: 1 x LH Connecting Pipe to OE Downpipe Flange; 1 x RH Connecting Pipe to OE Downpipe Flange; 1 x LH Front Silencer Bypass; 1 x Rh Front Silencer Bypass; 1 x Active Valved Centre Section; 1 x LH Connecting Pipe; 1 x RH Connecting Pipe; 1 x LH Rear Section; 1 x RH Rear Section; 2 x Valved Outlet Pipes; 1 x LH Polished Oval Trim; 1 x RH Polished Oval Trim
• SSXAU864: 2 x Adaptors to OE; 1 x LH Front Silencer Bypass; 1 x Rh Front Silencer Bypass; 1 x Active Valved Centre Section; 1 x LH Connecting Pipe; 1 x RH Connecting Pipe; 1 x LH Rear Section; 1 x RH Rear Section; 2 x Valved Outlet Pipes; 1 x LH Polished Oval Trim; 1 x RH Polished Oval Trim
• SSXAU904: 1 x LH Connecting Pipe to OE Downpipe Flange; 1 x RH Connecting Pipe to OE Downpipe Flange; 1 x LH Front Silencer Bypass; 1 x Rh Front Silencer Bypass; 1 x Active Valved Centre Section; 1 x LH Connecting Pipe; 1 x RH Connecting Pipe; 1 x LH Rear Section; 1 x RH Rear Section; 2 x Valved Outlet Pipes; 1 x LH Cerakote Black Oval Trim; 1 x RH Cerakote Black Oval Trim
• SSXAU865: 2 x Adaptors to OE; 1 x LH Front Silencer Bypass; 1 x Rh Front Silencer Bypass; 1 x Active Valved Centre Section; 1 x LH Connecting Pipe; 1 x RH Connecting Pipe; 1 x LH Rear Section; 1 x RH Rear Section; 2 x Valved Outlet Pipes; 1 x LH Cerakote Black Oval Trim; 1 x RH Cerakote Black Oval Trim
• SSXAU942: 1 x LH Front Silencer; 1 x LH Connecting Pipe to OE Downpipe Flange; 1 x RH Connecting Pipe to OE Downpipe Flange; 1 x RH Front Silencer; 1 x Active Valved Centre Section; 1 x LH Connecting Pipe; 1 x RH Connecting Pipe; 1 x LH Rear Section; 1 x RH Rear Section; 2 x Valved Outlet Pipes; 1 x LH Polished Oval Trim; 1 x RH Polished Oval Trim
• SSXAU941: 1 x LH Front Silencer; 1 x LH Connecting Pipe to OE Downpipe Flange; 1 x RH Connecting Pipe to OE Downpipe Flange; 1 x RH Front Silencer; 1 x Active Valved Centre Section; 1 x LH Connecting Pipe; 1 x RH Connecting Pipe; 1 x LH Rear Section; 1 x RH Rear Section; 2 x Valved Outlet Pipes; 1 x LH Cerakote Black Oval Trim; 1 x RH Cerakote Black Oval Trim
• SSXAU940: 2 x Adaptors to OE; 1 x LH Front Silencer; 1 x RH Front Silencer; 1 x Active Valved Centre Section; 1 x LH Connecting Pipe; 1 x RH Connecting Pipe; 1 x LH Rear Section; 1 x RH Rear Section; 2 x Valved Outlet Pipes; 1 x LH Polished Oval Trim; 1 x RH Polished Oval Trim
• SSXAU939: 2 x Adaptors to OE; 1 x LH Front Silencer; 1 x RH Front Silencer; 1 x Active Valved Centre Section; 1 x LH Connecting Pipe; 1 x RH Connecting Pipe; 1 x LH Rear Section; 1 x RH Rear Section; 2 x Valved Outlet Pipes; 1 x LH Cerakote Black Oval Trim; 1 x RH Cerakote Black Oval Trim

Downpipe options: compare every part number

"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

• SSXAU907: 1 x Heat Wrapped catless Downpipe (LH); 1 x Heat Wrapped catless Downpipe (RH); 1 x LH Connecting Pipe (To Milltek Sport System); 1 x RH Connecting Pipe (To Milltek Sport System); 1 x Downpipe fitting Kit for Non OPF Cars
• SSXAU909: 1 x Heat Wrapped 200CPSI HJS Cat Downpipe (LH); 1 x Heat Wrapped 200CPSI HJS Cat Downpipe (RH); 1 x LH Connecting Pipe (To Milltek Sport System); 1 x RH Connecting Pipe (To Milltek Sport System); 1 x Downpipe fitting Kit for Non OPF Cars Milltek note: Fits to Milltek Sport Catback Back System - Requires Stage 2 ECU Software.

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 RS7 C8 4.0 V8 bi-turbo, 2019+. 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.
• Fitting times are Milltek estimates for a professional installer.