Milltek Cat-back Exhaust for Seat Leon Cupra R 310PS (2018-2020) – Sharper Sound, Reduced Back Pressure
This is Milltek's cat-back system for the Seat Leon Cupra R 310PS. 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 5 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: 76.2mm (3")
-
EC Approved: No
-
Race System: No
-
Fitting Time: approx. 1.5 to 2.5 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 5 tailpipe finishes: GT-100 Burnt Titanium, GT-100 Cerakote Black, GT-100 Polished, GT-100 Titanium, JET-100 Carbon Fibre
- Designed, developed and manufactured in the UK by Milltek Sport
Fitment
- Seat Leon Cupra R 310PS (2018-2020)
Not suitable for: the Seat Leon Cupra K1, which needs the Milltek Cat-back Exhaust Seat Leon Cupra K1 07-09; 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; the Seat Leon Cupra 2.0T FSI 240PS, which needs the Milltek Cat-back Exhaust Seat Leon Cupra 2.0T FSI 240PS 06-11.
Installation
Milltek quotes a fitting time of approx. 1.5 to 2.5 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.
Which tailpipe finishes are available?
You can choose from: GT-100 Burnt Titanium, GT-100 Cerakote Black, GT-100 Polished, GT-100 Titanium, JET-100 Carbon Fibre. The finish is cosmetic and does not change the sound.
Does it fit the Seat Leon Cupra K1?
No. For that car, choose the Milltek Cat-back Exhaust Seat Leon Cupra K1 07-09.
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. 1.5 to 2.5 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.
