
Fabspeed BMW M240i (F22) Sport Cat Downpipe (2016+)
Ships from the brand or distributor, usually in 3–7 business days
Make sure this fits your car
Fits: BMW M240i (F22/F23), 2016+
For off-road / competition use only. Not legal for use on public roads in the United States, including California.
- Shipping at real carrier rates
- 30-day returns on unused parts
- Fitment help before you buy
On the M240i, the factory catalytic converter is the one exhaust restriction worth removing for real power gains, according to Fabspeed. Their Sport Cat Downpipe uses the largest HJS converter that fits the chassis, chosen together with HJS Motorsport. You get more flow, more power across the rev range and more sound, while keeping cats on the car.
What you get
- Large HJS catalytic converter, the biggest that would fit the M240i.
- 93% of the flow of a 3" straight pipe, per Fabspeed, without deleting the cat.
- No check engine light, and emissions-clean operation, according to Fabspeed.
- Measured gains. On Fabspeed's DynoJet the peak gains were 21 hp (at 6,000 rpm) and 29 lb-ft (at 3,700 rpm), with power up through the rev range.
Brand: Fabspeed · Part #: FS.BMW.M240.SC
For off-road / competition use only. Not legal for use on public roads in the United States, including California.
BMW M240i (F22/F23), 2016+
| Model | Chassis | Years | Engine | Fits |
|---|---|---|---|---|
| M140i | F20/F21 | 2016–2019 | Gen 1 B58 | |
| M240i | F22/F23 | 2016–2021 | Gen 1 B58 | |
| 340i | F30/F31/F34 | 2016–2019 | Gen 1 B58 | |
| 440i | F32/F33/F36 | 2017–2020 | Gen 1 B58 | |
| 540i | G30/G31 | 2017–2019 | Gen 1 B58 | |
| 740i | G11/G12 | 2016–2019 | Gen 1 B58 | |
| X3 M40i | G01 | 2018–2019 | Gen 1 B58 | |
| X4 M40i | G02 | 2019 | Gen 1 B58 | |
| 640i GT | G32 | 2018–2019 | Gen 1 B58 | |
| M340i | G20/G21 | 2019–2024 | Gen 2 B58 (TU) | |
| M440i | G22/G23/G26 | 2021–2024 | Gen 2 B58 (TU) | |
| M240i | G42 | 2022–2024 | Gen 2 B58 (TU) | |
| Z4 M40i | G29 | 2019+ | Gen 2 B58 (TU) | |
| GR Supra 3.0 | A90/A91 | 2020+ | Gen 2 B58 (TU) | |
| 540i | G30/G31 | 2020–2023 | Gen 2 B58 (TU) | |
| 740i | G11/G12 | 2020–2022 | Gen 2 B58 (TU) | |
| X3 M40i | G01 | 2020+ | Gen 2 B58 (TU) | |
| X4 M40i | G02 | 2020+ | Gen 2 B58 (TU) | |
| X5 xDrive40i | G05 | 2019–2023 | Gen 2 B58 (TU) | |
| X6 xDrive40i | G06 | 2020–2023 | Gen 2 B58 (TU) | |
| X7 xDrive40i | G07 | 2019–2022 | Gen 2 B58 (TU) | |
| 840i | G14/G15/G16 | 2019+ | Gen 2 B58 (TU) | |
| INEOS Grenadier | Station Wagon/Quartermaster | 2023+ | Gen 2 B58 (TU) | |
| M340i | G20/G21 | 2025+ | Gen 3 B58 (48V) | |
| M440i | G22/G23/G26 | 2025+ | Gen 3 B58 (48V) | |
| M240i | G42 | 2025+ | Gen 3 B58 (48V) |
Not sure? Email sales@b58racing.com with your VIN.
- Ships from the brand or distributor, usually in 3–7 business days.
- Shipping is charged at the carrier's rate, shown at checkout. Orders over 70 lb ship by freight for a flat $99.
- Unused parts can be returned within 30 days. Some items are marked no-refund in their description.
Full details are on our shipping and returns page.
Guides for this part
B58 Downpipe Install Guide: Gen 1 F-Chassis, Gen 2 G-Chassis and the GR Supra
A B58 downpipe swap is a bolt-on job. You undo one V-band clamp at the turbo, the joint at the mid pipe and a support bracket, move the two oxygen sensors over, and fit the new pipe with a fresh turbo gasket. Plan on 2 t
Best B58 Mods, In the Order to Do Them
Start with a tune. It is the biggest gain per dollar on any B58. Then add a downpipe and a Stage 2 map, then an upgraded high-pressure fuel pump (HPFP) and an ethanol blend. Only after that should you think about a bigge
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