OVERVIEW
Evolution Racewerks Sports Series 4-inch high-flow catted downpipe for the 2020–2024 BMW M135i xDrive (F40) with the B48 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)
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.
PART NUMBER
- BM-EXH021SCAT-X — Sports Series 4" high-flow catted downpipe, Brush finish
VEHICLE APPLICATIONS
| Make | Model | Chassis | Engine | Years |
|---|---|---|---|---|
| BMW | M135i xDrive | F40 | B48 | 2020–2024 |