Milltek Cat-back Exhaust for Volkswagen Golf Mk5 GTi 2.0T FSI (2004-2009) – Sharper Sound, Reduced Back Pressure
This is Milltek's cat-back system for the Volkswagen Golf Mk5 GTi 2.0T FSI. 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 race non-resonated, race resonated, non-resonated, resonated, non-resonated EC approved or resonated EC approved versions and 4 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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Race System: No
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
- Replaces the standard exhaust from the catalytic converter back, so the factory cat is retained
- Choice of 4 tailpipe finishes: GT-80 Cerakote Black, GT-80 Polished, JET-80 Polished, GT-100 Polished
- EC approved versions available
- Resonated (quieter) or non-resonated (louder) versions
- Designed, developed and manufactured in the UK by Milltek Sport
Fitment
- Volkswagen Golf Mk5 GTi 2.0T FSI (2004-2009)
- Volkswagen Golf Mk5 GTi Edition 30 2.0T FSi 230PS (2006-2009)
- Audi A3 2.0T FSI 2WD 3 door (2003-2012)
- Seat Leon Cupra 2.0T FSI 240PS (2006-2011)
- Seat Leon FR 2.0 T FSI 200-211PS (2006-2013)
Not every version fits every car in this list. Check the fitment shown for the option you select.
Not suitable for: the Volkswagen Golf Mk5 GT 2.0 TDI 170PS DPF, which needs the Milltek Cat-back Exhaust Volkswagen Golf Mk5 GT 2.0 TDI 170PS DPF 04-09; the Volkswagen Golf Mk5 2.0 TDI 140PS, which needs the Milltek Cat-back Exhaust Volkswagen Golf Mk5 2.0 TDI 140PS 04-09.
Installation
The fitting time varies by version; see the specification table for the option you choose. Please note (some versions): +0.5 to 1.0 hours for valance fitting depending if mudguards are fitted. Some versions: R32-style. Non-resonated. Must be fitted with an R32 rear valance. Some versions: R32-style. Resonated. Must be fitted with an R32 rear valance. 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 Downpipe & De-cat Volkswagen Golf Mk5 GTi 2.0T FSI 04-09.
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. Race versions are the loudest and are intended for track use.
Which tailpipe finishes are available?
You can choose from: GT-80 Cerakote Black, GT-80 Polished, JET-80 Polished, GT-100 Polished. The finish is cosmetic and does not change the sound.
Will it fit the Volkswagen Golf Mk5 GTi Edition 30 2.0T FSi 230PS?
Yes. Milltek lists this part for the Volkswagen Golf Mk5 GTi Edition 30 2.0T FSi 230PS as well as the other models in the fitment list above.
Does it fit the Volkswagen Golf Mk5 GT 2.0 TDI 170PS DPF?
No. For that car, choose the Milltek Cat-back Exhaust Volkswagen Golf Mk5 GT 2.0 TDI 170PS DPF 04-09.
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?
It depends on the version. Milltek's fitting time for each option is shown in its specification table.
What is it made from?
T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.
