KYOSTAR Catless Downpipes for 2020+ BMW F97 X3 M F98 X4 M S58 3.0T

KYOSTAR Catless Downpipes

Upgrade your BMW S58-powered performance SUV with the KYOSTAR Catless Downpipes. Designed for selected 2020 and newer BMW F97 X3 M and F98 X4 M models, these downpipes replace the restrictive factory catalytic converter sections to support improved exhaust flow, quicker turbo response, and a more aggressive exhaust tone.

The high-flow catless design provides a more direct exhaust path from the S58 twin-turbo engine. Built for performance-oriented applications, these downpipes are suitable for track-focused vehicles, tuned builds, and upgraded turbo setups where reduced exhaust restriction is required.

Fitment

• 2020+ BMW F97 X3 M S58 3.0T

• 2020+ BMW F97 X3 M Competition S58 3.0T

• 2020+ BMW F98 X4 M S58 3.0T

• 2020+ BMW F98 X4 M Competition S58 3.0T

Note: Only compatible with selected BMW F97 X3 M and F98 X4 M models equipped with the S58 3.0L twin-turbo inline-six engine. Not compatible with standard X3 or X4 models, X3 M40i, X4 M40i, B58, B48, diesel, hybrid, or other engine applications. Please verify your vehicle year, chassis code, engine code, factory downpipe layout, flange design, oxygen sensor locations, and exhaust connections before purchase.

Fitment Note: Exhaust layouts, sensor positions, flange designs, mounting points, and factory emissions equipment may vary by production date, model year, market, and previous modifications. Please compare your original downpipes and all connection points with the product photos before ordering.

Emissions Notice: These catless downpipes remove the factory catalytic converters and may trigger a check-engine light without compatible ECU software. They are intended for off-road or competition use only and may not be legal for use on public roads. Please check all applicable federal, state, and local emissions regulations before purchase and installation.

Professional installation and compatible ECU tuning are strongly recommended. Additional gaskets, seals, clamps, mounting hardware, heat shielding, or minor adjustment may be required depending on the vehicle configuration, exhaust system, and previous modifications.

Product Details