Milltek Cat-back Exhaust for Seat Leon Cupra 290 3 & 5 Door Hatch (GPF/OPF Equipped Models Only) (2019-2020) – Sharper Sound, Reduced Back Pressure
This is Milltek's cat-back system for the Seat Leon Cupra 290 3 & 5 Door Hatch (GPF/OPF Equipped Models Only). 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 non-resonated 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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Pipe Diameter: 76.2mm (3")
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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 4 tailpipe finishes: Cerakote Black Oval, Polished Oval, GT-80 Cerakote Black, GT-80 Polished
- EC approved versions available
- Resonated (quieter) or non-resonated (louder) versions
- Designed, developed and manufactured in the UK by Milltek Sport
Fitment
- Seat Leon Cupra 290 3 & 5 Door Hatch (GPF/OPF Equipped Models Only) (2019-2020)
- Seat Leon Cupra 300 2.0 TSI (Non-OPF/GPF Models) (2018-2019)
Not every version fits every car in this list. Check the fitment shown for the option you select.
Not suitable for: the Seat Leon Cupra 280 & 290 2.0 TSI (Non OPF/GPF Models), which needs the Milltek Cat-back Exhaust Seat Leon Cupra 280 290 2.0 TSI Non OPF/GPF 14-17; the Seat Leon Cupra R 310PS, which needs the Milltek Cat-back Exhaust Seat Leon Cupra R 310PS 18-20; the Seat Leon Cupra R 2.0 TSI 265PS, which needs the Milltek Cat-back Exhaust Seat Leon Cupra R 2.0 TSI 265PS 10-12.
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 GPF/OPF Bypass Seat Leon Cupra 290 3dr & 5dr Hatch (GPF & OPF Only) 19-20.
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: Cerakote Black Oval, Polished Oval, GT-80 Cerakote Black, GT-80 Polished. The finish is cosmetic and does not change the sound.
Will it fit the Seat Leon Cupra 300 2.0 TSI (Non-OPF/GPF Models)?
Yes. Milltek lists this part for the Seat Leon Cupra 300 2.0 TSI (Non-OPF/GPF Models) as well as the other models in the fitment list above.
Does it fit the Seat Leon Cupra 280 & 290 2.0 TSI (Non OPF/GPF Models)?
No. For that car, choose the Milltek Cat-back Exhaust Seat Leon Cupra 280 290 2.0 TSI Non OPF/GPF 14-17.
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.
