Product details
OVERVIEW
Evolution Racewerks Competition Series 4-inch catless downpipe for US-spec BMW X1 (F48), X2 (F39) and 2 Series Gran Coupe (F44) with the B46/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 on tuned applications.
SPECS
- T304 stainless steel construction, 4" body
- Competition Series: catless design for maximum flow
- Finish options: Brush, Polish or Ceramic Thermal Coating (black)
- FWD and AWD (xDrive) versions
PARTS INCLUDED
- ER Competition Series catless downpipe in the selected 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) (X1 F48 / X2 F39 only), or Burger Motorsports JB4 Tuner – BMW 320i / 330i / 430i / X1 / X2 (B46/B48) (X1 F48 / X2 F39 only).
Installation
- Evolution Racewerks does not publish an installation guide or video for this part.
- Contact Speed Logic for installation support or fitment questions.
Notes
- Off-Road Use Only. Not CARB legal.
- Select FWD or AWD (xDrive) to match your vehicle.
- Confirm region spec and OPF presence before ordering — US and EU/Asia versions are not interchangeable.
- Also available: the Sports Series 4" High Flow Catted Downpipe – BMW X1 / X2 / 2 Series Gran Coupe (F48 / F39 / F44, B46/B48 US Spec).
PART NUMBER
- BM-EXH021S — Competition Series 4" catless downpipe, FWD, Brush finish
- BM-EXH021P — Competition Series 4" catless downpipe, FWD, Polish finish
- BM-EXH021TB — Competition Series 4" catless downpipe, FWD, Ceramic Thermal Coat Black finish
- BM-EXH021SX — Competition Series 4" catless downpipe, AWD (xDrive), Brush finish
- BM-EXH021PX — Competition Series 4" catless downpipe, AWD (xDrive), Polish finish
- BM-EXH021TBX — Competition Series 4" catless downpipe, AWD (xDrive), Ceramic Thermal Coat Black finish
VEHICLE APPLICATIONS
| Make | Model | Chassis | Engine | Years |
|---|---|---|---|---|
| BMW | X1 sDrive28i / X1 xDrive28i | F48 | B46 / B48 (US Spec) | 2016–2022 |
| BMW | X2 sDrive28i / X2 xDrive28i | F39 | B46 / B48 (US Spec) | 2018–2023 |
| BMW | 228i Gran Coupe / 228i xDrive Gran Coupe | F44 | B46 / B48 (US Spec) | 2020–2024 |