Milltek Cat-back Exhaust for Seat Leon FR 1.8 TSI 180PS SC and 5-door (2013-2018) – Sharper Sound, Reduced Back Pressure
This is Milltek's cat-back system for the Seat Leon FR 1.8 TSI 180PS SC and 5-door. 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, resonated or road+ part resonated versions and 2 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
-
System Type: Cat-back
-
Pipe Diameter: 70mm (2.76")
-
Tip Style: Twin 80mm GT80
-
EC Approved: No
-
Race System: No
-
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
- 70mm (2.76") pipework
- Replaces the standard exhaust from the catalytic converter back, so the factory cat is retained
- Choice of 2 tailpipe finishes: GT-80 Cerakote Black, GT-80 Polished
- Resonated (quieter) or non-resonated (louder) versions
- Designed, developed and manufactured in the UK by Milltek Sport
Fitment
- Seat Leon FR 1.8 TSI 180PS SC and 5-door (2013-2018)
- Volkswagen Golf Mk7.5 1.5TSI Evo GT & R-Line (Both GPF/OPF & Non GPF/OPF Models) (2017-2021)
Not every version fits every car in this list. Check the fitment shown for the option you select.
Not suitable for: the Seat Leon FR 1.4 TSI SC and 5-door, which needs the Milltek Cat-back Exhaust Seat Leon FR 1.4 TSI SC 5dr 13-18; the Seat Leon FR 2.0 TDI 184PS SC and 5-door (manual and DSG-auto), which needs the Milltek Cat-back Exhaust Seat Leon FR 2.0 TDI 184PS SC 5dr Manual DSG-auto 13-20; the Seat Leon FR 2.0 TDI 150 SC and 5-door (manual and DSG-auto), which needs the Milltek Cat-back Exhaust Seat Leon FR 2.0 TDI 150 SC & 5dr Manual & DSG-auto 13-20.
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.
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-80 Cerakote Black, GT-80 Polished. The finish is cosmetic and does not change the sound.
Will it fit the Volkswagen Golf Mk7.5 1.5TSI Evo GT & R-Line (Both GPF/OPF & Non GPF/OPF Models)?
Yes. Milltek lists this part for the Volkswagen Golf Mk7.5 1.5TSI Evo GT & R-Line (Both GPF/OPF & Non GPF/OPF Models) as well as the other models in the fitment list above.
Does it fit the Seat Leon FR 1.4 TSI SC and 5-door?
No. For that car, choose the Milltek Cat-back Exhaust Seat Leon FR 1.4 TSI SC 5dr 13-18.
Is it road legal?
Milltek does not list EC approval for this part. Any exhaust used on the road must still meet noise and emissions rules, so check the requirements where you live.
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.
