Evolution Racewerks Sports Series 4" High Flow Catted Downpipe – BMW 230i / 330i / 430i / 530i / X3 30i / X4 30i / Z4 30i (B46 US Spec)

OVERVIEW

Evolution Racewerks Sports Series 4-inch high-flow catted downpipe for US-spec BMW models with the B46 four-cylinder. A high-flow catalytic converter replaces the restrictive factory unit, improving spool and mid-range torque on tuned cars.

SPECS

• T304 stainless steel construction, 4" body
• Sports Series: high-flow catted design
• Brush finish (S)
• Two versions by build date: 2016-09/2020 and 10/2020+

PARTS INCLUDED

• ER Sports Series high-flow catted downpipe, Brush finish
• Required gaskets and hardware

TECH RESOURCES

Additional Parts Required

• Supporting tuning is REQUIRED after installation to prevent check engine lights and realize the performance gain (sold separately).

Installation

• Installation guidance available through Evolution Racewerks technical support.

Notes

• Sports Series high-flow catted downpipes are intended for off-road / race use; check your local emissions regulations before installing on a street-driven vehicle.
• Select the version that matches your vehicle build date (2016-09/2020 or 10/2020+).
• Confirm region spec and OPF presence before ordering — US and EU/Asia versions are not interchangeable.

PART NUMBER

• BM-EXH019SCAT — Sports Series 4" high-flow catted downpipe, build date 2016-09/2020, Brush finish
• BM-EXH031SCAT — Sports Series 4" high-flow catted downpipe, build date 10/2020+, Brush finish
• Competition Series 4" catless version — BM-EXH019S / BM-EXH031S

VEHICLE APPLICATIONS