Evolution Racewerks Competition Series 4" Catless Downpipe – BMW 120i / 125i / 230i / 330i / 430i / 530i / X3 / X4 / Z4 (B48 EU/Asia Spec)

OVERVIEW

Evolution Racewerks Competition Series 4-inch catless downpipe for EU/Asia-spec BMW models with the B48 four-cylinder. The factory downpipe is the single biggest exhaust restriction on these cars, and the ER replacement significantly improves spool and mid-range torque, especially on tuned applications.

SPECS

• T304 stainless steel construction, 4" body
• Competition Series: catless design for maximum flow
• Brush finish (S)
• Standard Non-OPF and with-OPF versions

PARTS INCLUDED

• ER Competition Series catless 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): Bootmod3 B46/B48 Tune – BMW 230i / 330i / 430i / 530i (F/G-Series) (not Z4 G29).

Installation

• Installation guidance available through Evolution Racewerks technical support.

Notes

• Competition Series catless downpipes are for OFF-ROAD / RACE USE ONLY and are not emissions legal for street use.
• Confirm region spec and OPF presence before ordering — US and EU/Asia versions are not interchangeable.

PART NUMBER

• BM-EXH023S — Competition Series 4" catless downpipe, standard Non-OPF, Brush finish
• BM-EXH30S — Competition Series 4" catless downpipe, with OPF, Brush finish
• Sports Series 4" high-flow catted version — BM-EXH023SCAT

VEHICLE APPLICATIONS