304SUS Catless BMW 320i Downpipe For 2012-2017 F30 F31 F34 328i 335i 420i 428i

Product Specification

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.

Features

• High-flow 4-inch pipe design reduces exhaust restriction and improves exhaust flow efficiency.

• Enhances turbo response and exhaust pulse flow for BMW N20 2.0T turbocharged engines.

• Manufactured from durable stainless steel for reliable performance under high exhaust temperatures.

• Optimized exhaust routing supports improved turbocharger performance and aggressive exhaust characteristics.

• Designed for BMW enthusiasts seeking improved exhaust flow and a deeper performance exhaust tone.

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

Notes

Compatible Vehicle: Designed for BMW F30, F31, F34, and F32 models equipped with the N20 2.0T Turbo L4 engine.

Incompatible Vehicle: Not compatible with N26, B48, B58, or other BMW engine platforms.

Verify Vehicle: Please confirm your vehicle year, chassis code, engine configuration, turbo outlet connection, exhaust mounting points, O2 sensor locations, and exhaust setup before ordering.

Installation: Professional installation is recommended. Because this is a catless downpipe, ECU tuning or calibration may be required to optimize engine performance and properly manage oxygen sensor-related parameters.

Important: Removing the factory catalytic converter may trigger a check engine light. This product is intended for off-road and racing applications only where permitted. Please check local emissions regulations before installation.

Product Details

FAQ

Q1: Will this fit my vehicle?

This 4" catless downpipe is designed for BMW F30, F31, F34, and F32 models equipped with the N20 2.0T engine. Please confirm your chassis, production year, and engine configuration before purchase.

Q2: Does installation require modification?

The KYOSTAR 4" Catless Downpipe is designed with optimized exhaust routing and factory-style mounting points for compatible BMW N20 applications. Professional installation is recommended for proper alignment and exhaust sealing.

Q3: Does this require ECU tuning?

ECU tuning or calibration may be required after installing a catless downpipe to properly manage oxygen sensor-related changes, optimize engine parameters, and improve overall performance.

Q4: What performance benefits does this provide?

The KYOSTAR 4" Catless Downpipe improves exhaust flow efficiency, reduces factory exhaust restriction, enhances turbocharger response, and delivers a more aggressive exhaust tone for BMW N20 2.0T turbocharged applications.

Professional installation is recommended.

KYOSTAR products are quality inspected before shipment. Please contact our support team for installation assistance or after-sales support.