IBOAUTO
B58 Catless Downpipe for OPF / GPF Cars (2021+)
Downpipe
$429.00
Off-road / competition use only
This part removes factory emissions equipment. It is not legal for use on vehicles driven on public roads and is sold only for off-road, racing and closed-course competition use. You are responsible for following the emissions laws where the vehicle is used. Read more
A catless downpipe for 2021+ B58 cars that left the factory with an OPF/GPF (gasoline particulate filter), which is mostly European-spec cars. It replaces the factory downpipe and filter with a straight-through 304 stainless pipe, freeing up flow and sharpening the exhaust note once the car is tuned. Most North American-spec cars don't have an OPF; if you're not sure about yours, send us your VIN.
- 304 stainless, 1.5 mm wall
- Replaces the factory downpipe and OPF/GPF
- Smooth finish
- Bolt-on, no cutting or welding
Fits
- 2021+ B58 cars with a factory OPF/GPF, including the M340i, 440i, 540i, 740i, 840i, X4 M40i and Supra A90
- Not for cars without an OPF/GPF
- Confirm fitment with your VIN before ordering
Specs
- Emissions
- Catless (off-road / competition use only)
- Tune
- Tune required
- Material
- 304 stainless steel, 1.5 mm wall
- Finish
- Smooth
- Replaces
- Factory downpipe and OPF/GPF
What's included
- Downpipe
Install
- Bolt-on, no cutting or welding
- Reuses factory O2 sensors
- Requires a tune that supports catless downpipes, or the check engine light will come on
- Professional install recommended
- The tune must also turn off the OPF/GPF monitoring
