KYOSTAR 4" Catless Downpipe for 2012-2017 BMW F30 F31 F34 320i 328i 420i 428i N20 2.0T

KYOSTAR 4" Catless Downpipe for 2012-2017 BMW F30 F31 F34 320i 328i 420i 428i N20 2.0T

The KYOSTAR 4" Catless Downpipe is designed for BMW F-Series models equipped with the N20 2.0T turbocharged engine. Featuring a high-flow 4-inch pipe design, this downpipe improves exhaust flow efficiency by removing the factory catalytic restriction, helping reduce backpressure and improve turbo response. It is engineered for BMW enthusiasts looking to maximize turbocharger performance and achieve a more aggressive exhaust tone.

Manufactured with durable stainless steel construction and optimized exhaust routing, this catless downpipe provides improved exhaust pulse flow and supports higher-performance applications. Designed for off-road and race-use applications, ECU tuning is recommended after installation to properly manage oxygen sensor readings and engine calibration.

Fitment

• 2012-2017 BMW F30 320i N20 2.0T

• 2012-2017 BMW F30 328i N20 2.0T

• 2012-2017 BMW F31 320i N20 2.0T

• 2012-2017 BMW F31 328i N20 2.0T

• 2014-2017 BMW F34 320i GT N20 2.0T

• 2014-2017 BMW F34 328i GT N20 2.0T

• 2014-2017 BMW F32 420i N20 2.0T

• 2014-2017 BMW F32 428i N20 2.0T

Note:

Compatible engine: N20 2.0T Turbo engine applications only.
Incompatible engine: Not compatible with N26, B48, B58, or other BMW engine platforms.
Verify chassis: Confirm F30/F31/F34/F32 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 regions may have different emissions equipment, sensor locations, and factory exhaust configurations. Previous exhaust modifications may affect installation compatibility.

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.

O2 Sensor Reminder:
After installation, check engine lights may occur due to removed catalytic converters. ECU tuning or proper calibration may be required.

Professional installation is recommended.

Product Details