KYOSTAR One-Piece Catless Downpipes for 2021+ BMW G80 M3 G82 G83 M4 2022+ G81 M3 S58 3.0T

KYOSTAR One-Piece Catless Downpipes

Upgrade your BMW S58-powered M car with the KYOSTAR One-Piece Catless Downpipes. Designed for selected BMW G80/G81 M3 and G82/G83 M4 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 one-piece construction provides a direct and streamlined exhaust path from the factory twin-turbo system. Built for performance-oriented S58 applications, these catless downpipes are suitable for tuned street vehicles, track-focused builds, and upgraded turbo setups where reduced exhaust restriction is required.

Fitment

• 2021+ BMW G80 M3 S58 3.0T

• 2021+ BMW G80 M3 Competition S58 3.0T

• 2021+ BMW G80 M3 Competition xDrive S58 3.0T

• 2022+ BMW G81 M3 Touring Competition xDrive S58 3.0T

• 2021+ BMW G82 M4 Coupe S58 3.0T

• 2021+ BMW G82 M4 Competition S58 3.0T

• 2021+ BMW G82 M4 Competition xDrive S58 3.0T

• 2021+ BMW G83 M4 Convertible S58 3.0T

• 2021+ BMW G83 M4 Competition xDrive S58 3.0T

Note: Only compatible with selected BMW G80/G81 M3 and G82/G83 M4 models equipped with the S58 3.0L twin-turbo inline-six engine. Not compatible with B58, S55, N55, B48, diesel, hybrid, naturally aspirated, or other engine applications. Please verify your vehicle year, chassis code, engine code, factory downpipe configuration, 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, 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, competition, or racing 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