KYOSTAR 4.5" Catless Downpipe for 2016-2022 BMW F22 F30 F32 M240i M340i M440i B58 3.0T

KYOSTAR 4.5" Catless Downpipe for 2016-2022 BMW F22 F30 F32 M240i M340i M440i B58 3.0T

The KYOSTAR 4.5" Catless Downpipe is designed for BMW F-Series and G-Series models equipped with the B58 3.0T turbocharged inline-six engine. Featuring a large 4.5-inch high-flow pipe design, this downpipe reduces factory exhaust restriction, improves exhaust flow, and helps enhance turbo response under increased boost conditions.

Manufactured from durable stainless steel with optimized exhaust routing, this performance downpipe improves exhaust pulse flow and delivers a more aggressive turbo exhaust tone. Designed for modified BMW B58 applications, ECU tuning is recommended after installation to properly optimize engine performance and manage oxygen sensor readings.

Fitment

• 2016-2022 BMW F22 M240i B58 3.0T

• 2016-2022 BMW F23 M240i B58 3.0T

• 2016-2019 BMW F30 M340i B58 3.0T

• 2016-2019 BMW F31 M340i B58 3.0T

• 2017-2020 BMW F32 M440i B58 3.0T

• 2017-2020 BMW F33 M440i B58 3.0T

• 2017-2020 BMW F36 M440i B58 3.0T

• 2017-2022 BMW G30 540i B58 3.0T

• 2018-2022 BMW G32 640i GT B58 3.0T

• 2016-2022 BMW G11 G12 740i B58 3.0T

• 2018-2022 BMW G14 G15 840i B58 3.0T

Note:

Compatible engine: B58 3.0T Turbo L6 engine applications only.
Incompatible engine: Not compatible with N55, S55, S58, B58TU, or other engine platforms.
Verify chassis: Confirm your BMW chassis code before purchase.
Verify year: Check vehicle production year and factory exhaust configuration.
Verify connection: Confirm turbo outlet connection, exhaust mounting points, and O2 sensor locations.

Fitment Note:
Vehicle specifications may vary by production date and market. Different BMW models may use different exhaust layouts, sensor locations, and factory configurations. Previous exhaust modifications may affect installation compatibility.

O2 Sensor Reminder:
Removing the factory catalytic converter may trigger a check engine light. ECU tuning or proper calibration may be required after installation.

ECU Tune Reminder:
A professional ECU tune is recommended to maximize performance gains and ensure proper engine operation.

Off-road Notice:
This catless downpipe is intended for off-road and racing applications only where permitted. It may not comply with emissions regulations in certain areas.

Professional installation is recommended.

Product Details