Milltek Cat-back Exhaust for Ford Fiesta Mk8 1.0T EcoBoost ST-Line 3 & 5 Door (Non-OPF/GPF Models Only) (2017-2019) – Sharper Sound, Reduced Back Pressure
This is Milltek's cat-back system for the Ford Fiesta Mk8 1.0T EcoBoost ST-Line 3 & 5 Door (Non-OPF/GPF 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 resonated EC approved, non-resonated, resonated or road+ part resonated versions and 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
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System Type: Cat-back
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Pipe Diameter: 60.3mm (2.37")
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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
- 60.3mm (2.37") pipework
- Replaces the standard exhaust from the catalytic converter back, so the factory cat is retained
- Choice of 5 tailpipe finishes: GT-90 Burnt Titanium, GT-90 Cerakote Black, GT-90 Polished, GT-90 Titanium, JET-90 Carbon Fibre
- EC approved versions available
- Resonated (quieter) or non-resonated (louder) versions
- Designed, developed and manufactured in the UK by Milltek Sport
Fitment
- Ford Fiesta Mk8 1.0T EcoBoost ST-Line 3 & 5 Door (Non-OPF/GPF Models Only) (2017-2019)
Not suitable for: the Ford Fiesta Mk8 ST 1.5 EcoBoost 200PS (Pre Sept 2020 Models Only), which needs the Milltek Cat-back Exhaust Ford Fiesta Mk8 ST 1.5 EcoBoost 200PS Pre Sept 2020 18-20; the Ford Fiesta Mk8 & Mk8.5 ST 1.5 EcoBoost 200PS (Post Sept 2020 Models Only), which needs the Milltek Cat-back Exhaust Ford Fiesta Mk8 & Mk8.5 ST 1.5 EcoBoost 200PS Post Sept 2020 20+.
Installation
Some versions: Cat Back with Twin GT-90 Cerakote Black Trims - Required Fiesta ST Valance - EC Approved. Some versions: Cat Back with Twin GT-90 Polished Trims - Required Fiesta ST Valance - EC Approved. Some versions: Non Res (Louder) Cat Back with Twin GT-90 Cerakote Black Trims - Required Fiesta ST Valance. Some versions: Non Res (Louder) Cat Back with Twin GT-90 Polished Trims - Required Fiesta ST 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.
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 Burnt Titanium, GT-90 Cerakote Black, GT-90 Polished, GT-90 Titanium, JET-90 Carbon Fibre. The finish is cosmetic and does not change the sound.
Does it fit the Ford Fiesta Mk8 ST 1.5 EcoBoost 200PS (Pre Sept 2020 Models Only)?
No. For that car, choose the Milltek Cat-back Exhaust Ford Fiesta Mk8 ST 1.5 EcoBoost 200PS Pre Sept 2020 18-20.
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.
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.
