Milltek Downpipe & Sports Cat for BMW 2 Series M240i Coupé (G42 XDrive OPF/GPF Models Only - Non Hybrid Pre LCI) (2022-2025) – Improved Flow, Sports Catalyst
This is Milltek's large-bore downpipe with hi-flow sports cat for the BMW Z4 G29 3.0 I6 (B58) (OPF/GPF Models only). It replaces the restrictive factory downpipe with a larger-bore pipe fitted with a high-flow sports catalyst in place of the standard unit, using a less dense substrate that flows significantly better than the factory cat while still treating the exhaust gases passing through it.
It sits between a stock downpipe and a full de-cat: a genuine flow gain suited to a Stage 1 or Stage 2 remap, without giving up the catalyst entirely the way a de-cat pipe does.
In the UK, a replacement catalyst on a car first registered from 1 March 2001 needs ECE R103 type-approval to be road legal, so check the EC Approved line in the specification for the version you choose.
Specifications
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System Type: Large Bore Downpipe and Hi-Flow Sports Cat
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Pipe Diameter: 90mm (3.54")
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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
- 90mm (3.54") 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
- BMW 2 Series M240i Coupé (G42 XDrive OPF/GPF Models Only - Non Hybrid Pre LCI) (2022-2025)
- BMW 3 Series G20 & G21 M340i XDrive Saloon & Touring Models (OPF/GPF Models Only) Pre LCI (2019-2025)
- BMW 4 Series G22 M440i Coupe (OPF/GPF Equipped Models Only) Pre LCI (2020-2025)
- BMW Z4 G29 3.0 I6 (B58) (OPF/GPF Models only) (2019 onwards)
- Toyota/Lexus Supra A90 Coupe 3.0 Turbo (UK/European with OPF/GPF) - Both Auto & Manual Models (2019 onwards)
Not suitable for: the BMW 2 Series M240i Coupé (G42 XDrive - NAS Non OPF/GPF Models Only), which needs the Milltek Downpipe & Sports Cat BMW 2 Series M240i Coupé (G42 XDrive - NAS Non OPF/GPF Only) 22+; the BMW 2 Series M2 Coupe (G87 S58 OPF/GPF Models), which needs the Milltek HJS Tuning ECE Downpipes BMW 2 Series M2 Coupe G87 S58 OPF/GPF 23+; the BMW 2 Series M2 Coupe (G87 S58 NAS Non-OPF/GPF Models), which needs the Milltek Sports Cat Downpipe BMW 2 Series M2 Coupe G87 S58 OPF/GPF 23+.
Installation
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 GPF/OPF Bypass BMW 2 Series M240i Coupé (G42 XDrive OPF/GPF - Non Hybrid Pre LCI) 22-25, Milltek Cat-back Exhaust BMW 2 Series M240i Coupé (G42 XDrive OPF/GPF - Non Hybrid Pre LCI) 22-25.
Will it fit the BMW 3 Series G20 & G21 M340i XDrive Saloon & Touring Models (OPF/GPF Models Only) Pre LCI?
Yes. Milltek lists this part for the BMW 3 Series G20 & G21 M340i XDrive Saloon & Touring Models (OPF/GPF Models Only) Pre LCI as well as the other models in the fitment list above.
Does it fit the BMW 2 Series M240i Coupé (G42 XDrive - NAS Non OPF/GPF Models Only)?
No. For that car, choose the Milltek Downpipe & Sports Cat BMW 2 Series M240i Coupé (G42 XDrive - NAS Non OPF/GPF Only) 22+.
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.
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.
