Milltek Cat-back Exhaust for Audi RS3 Sportback S tronic (8P) (2011-2012) – Sharper Sound, Reduced Back Pressure
This is Milltek's cat-back system for the Audi RS3 Sportback S tronic (8P). It replaces everything from the factory catalytic converter rearward with wider-bore pipework, a re-profiled mid-pipe and silencers tuned specifically for this platform, cutting back pressure and sharpening the exhaust note. The factory catalytic converter stays in place, so the car's emissions hardware is left as standard. It's offered in resonated or non-resonated versions and 3 tailpipe finishes, so you can pick the setup that suits how the car's used.
It's aimed at owners who want a noticeably different sound and a genuine, if modest, flow improvement without touching anything upstream of the cat: a straightforward bolt-on that doesn't need a remap or any other supporting mods to enjoy.
Specifications
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System Type: Cat-back
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Pipe Diameter: 76.2mm (3")
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Tip Style: Twin 90mm GT90
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Race System: No
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Fitting Time: approx. 1 to 1.5 hours (Milltek figure)
Key Features
- Made from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration
- Mandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow
- 76.2mm (3") pipework
- Replaces the standard exhaust from the catalytic converter back, so the factory cat is retained
- Choice of 3 tailpipe finishes: GT-90 Cerakote Black, GT-90 Polished, GT-90 Titanium
- EC approved versions available
- Resonated (quieter) or non-resonated (louder) versions
- Designed, developed and manufactured in the UK by Milltek Sport
Fitment
- Audi RS3 Sportback S tronic (8P) (2011-2012)
Not suitable for: the Audi RS3 Sportback (8V MQB - Pre Facelift Only), which needs the Milltek Cat-back Exhaust Audi RS3 Sportback 8V MQB Pre Facelift 15-17; the Audi RS3 Sportback 400PS (8V MQB - Facelift Only) - Non-OPF/GPF Models, which needs the Milltek Cat-back Exhaust Audi RS3 Sportback 400PS 8V Facelift Non-OPF/GPF 17-18.
Installation
Milltek quotes a fitting time of approx. 1 to 1.5 hours. We recommend professional fitting on a ramp. Once fitted, check the tailpipe alignment and re-check all clamps after the first few hundred miles.
Upgrade Further
Also available from Milltek for this car: Milltek Secondary Catalyst Bypass Audi RS3 Sportback S tronic 8P 11-12.
What's the difference between the resonated and non-resonated versions?
The resonated version adds extra silencing for a quieter, more refined tone. The non-resonated version leaves it out, so it is louder and more aggressive.
Which tailpipe finishes are available?
You can choose from: GT-90 Cerakote Black, GT-90 Polished, GT-90 Titanium. The finish is cosmetic and does not change the sound.
Does it fit the Audi RS3 Sportback (8V MQB - Pre Facelift Only)?
No. For that car, choose the Milltek Cat-back Exhaust Audi RS3 Sportback 8V MQB Pre Facelift 15-17.
Is it road legal?
Some versions are EC approved; check the EC Approved line in the specification for the option you choose.
Do I need a remap?
No. It fits behind the factory catalytic converter, so no software changes are needed.
Does it keep the factory catalytic converter?
Yes. It fits behind the factory catalytic converter, which stays in place.
How long does it take to fit?
Milltek quotes approx. 1 to 1.5 hours.
What is it made from?
T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.
Is there a warranty?
Yes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.
