Milltek Cast Downpipe & HJS Sports Cat for Honda/Acura Civic Type R FK8 2.0 i-VTEC (Both OPF/GPF & Non OPF/GPF Models) (2017-2022) – Improved Flow, Sports Catalyst
This is Milltek's cast downpipe for the Honda/Acura Civic Type R FK8 2.0 i-VTEC (Both OPF/GPF & Non OPF/GPF Models). It replaces the factory downpipe with a cast, less restrictive design at the point where the factory system is most restrictive, improving flow from the turbo outlet into the rest of the exhaust.
It's a solid first step for anyone building towards a bigger power upgrade, since the downpipe is usually the single biggest bottleneck in the standard exhaust.
Specifications
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System Type: Cast Downpipe with HJS High Flow Sports Cat
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Pipe Diameter: 76.2mm (3")
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EC Approved: No
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Race System: Yes
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
- High-flow sports catalyst flows better than the dense factory unit while still treating exhaust gases
- Designed, developed and manufactured in the UK by Milltek Sport
Fitment
- Honda/Acura Civic Type R FK8 2.0 i-VTEC (Both OPF/GPF & Non OPF/GPF Models) (2017-2022)
- Honda/Acura Civic Type R FL5 2.0 i-VTEC (Both OPF/GPF & Non OPF/GPF Models) (2022 onwards)
- Honda/Acura Integra Type S (DE5) 2.0 Turbo 320hp (2023 onwards)
Not suitable for: the Honda/Acura Civic Type R FK2 Turbocharged 2.0 litre i-VTEC (LHD models only), which needs the Milltek Cast Downpipe & HJS Sports Cat Honda Civic Type R FK2 Turbocharged 2.0 litre i-VTEC LHD 15-17.
Installation
The fitting time varies by version; see the specification table for the option you choose. This work involves removing parts close to the turbo and engine, so we recommend fitting by a specialist with a ramp and suitable software support.
Upgrade Further
Also available from Milltek for this car: Milltek Cat-back Exhaust Honda Civic Type R FK8 2.0 i-VTEC (Both OPF/GPF & Non OPF/GPF Models) 17-22, Milltek Active Valve Control Honda Civic Type R FL5 2.0 i-VTEC (Both OPF/GPF & Non OPF/GPF Models) 22+.
Will it fit the Honda/Acura Civic Type R FL5 2.0 i-VTEC (Both OPF/GPF & Non OPF/GPF Models)?
Yes. Milltek lists this part for the Honda/Acura Civic Type R FL5 2.0 i-VTEC (Both OPF/GPF & Non OPF/GPF Models) as well as the other models in the fitment list above.
Does it fit the Honda/Acura Civic Type R FK2 Turbocharged 2.0 litre i-VTEC (LHD models only)?
No. For that car, choose the Milltek Cast Downpipe & HJS Sports Cat Honda Civic Type R FK2 Turbocharged 2.0 litre i-VTEC LHD 15-17.
Is it road legal?
Milltek lists this as a race part without EC approval, so it is intended for off-road and competition use.
Do I need a remap?
A suitable remap is strongly recommended, as the engine management needs to account for the change in flow and sensor readings. Speak to your tuner before fitting.
How is a sports cat different from a de-cat?
A sports cat still contains a catalyst, just a less dense one that flows better than the factory unit. A de-cat removes the catalyst completely.
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.
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.
