KYOSTAR 5" Catless Downpipe for 2016-2022 BMW F22 F30 F32 M240i M340i M440i B58 3.0T

KYOSTAR 5" Catless Downpipe for 2016-2022 BMW F22 F30 F32 M240i M340i M440i B58 3.0T

The KYOSTAR 5" Catless Downpipe is designed for BMW models equipped with the B58 3.0T turbocharged inline-six engine. Featuring an oversized 5-inch high-flow design, this downpipe significantly reduces factory exhaust restriction, improves exhaust flow efficiency, and helps increase turbo response under high-performance driving conditions.

Built with durable stainless steel construction and optimized exhaust routing, this performance downpipe improves exhaust pulse flow while producing a more aggressive turbo exhaust tone. Designed for modified BMW B58 applications, ECU tuning is recommended after installation to maximize performance and properly 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 BMW chassis compatibility 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 have different exhaust layouts, sensor positions, 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:
Professional ECU tuning is recommended to optimize engine performance and ensure proper operation after installing this catless downpipe.

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