Milltek Sport Cat-Back Exhaust - 2015-2018 Audi TT Mk3 TTS 2.0TFSI Quattro

Upgrade the Audi TT Mk3 TTS 2.0TFSI Quattro (2015-2018) 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.

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

• SSXAU575: 1 x Adaptor for OE Downpipe (Not required when fitting the system as a turbo back option); 1 x Centre Silencer Delete Pipe; 1 x Rear Silencer (Re-uses Electronic Valve Motors from the OE System); 4 x Polished Oval Tips
• SSXAU576: 1 x Adaptor for OE Downpipe (Not required when fitting the system as a turbo back option); 1 x Centre Silencer Delete Pipe; 1 x Rear Silencer (Re-uses Electronic Valve Motors from the OE System); 4 x Cerakote Black Velvet Oval Tips
• SSXAU577: 1 x Adaptor for OE Downpipe (Not required when fitting the system as a turbo back option); 1 x Centre Silencer; 1 x Rear Silencer (Re-uses Electronic Valve Motors from the OE System); 4 x Polished Oval Tips
• SSXAU578: 1 x Adaptor for OE Downpipe (Not required when fitting the system as a turbo back option); 1 x Centre Silencer; 1 x Rear Silencer (Re-uses Electronic Valve Motors from the OE System); 4 x Cerakote Black Velvet Oval Tips

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

• SSXAU581: 1 x Cast Large-bore Catless Downpipe; 1 x Connecting Pipe (For fitment to Milltek Sport System Only)
• SSXAU583: 1 x Cast Large Bore Downpipe 200cell HJS Catalyst (Replaces MSAU616); 1 x Connecting Pipe (For fitment to Milltek Sport System Only)
• SSXAU582: 1 x Large-bore Downpipe and 200-CPSI Hi-flow Sports Catalyst (EC-Approved); 1 x Connecting Pipe (For fitment to Milltek Sport System Only)

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 TT Mk3 TTS 2.0TFSI Quattro, 2015-2018. 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.