Sports Series 4" High Flow Catted Downpipe for the B46 US Spec (4 Cylinder) Engine Finish:Brush Finish Slower intake air speeds means

Slower intake air speeds means reduced throttle response and more turbocharger lag

It is also available in our Type III Hard Black Anodizing for the  stealthy

we do not need to go tall to get the same intercooler size

Now available for the 2025+ BMW G90 M5 S68 Engines

The B46/B48 engine does not have a pressurize hose or fitting from the factory that you can easily tap into

Sports Series 4" High Flow Catted Downpipe for the B46 US Spec (4 Cylinder) Engine Finish:Brush Finish Slower intake air speeds meansIntroducing our new Sports Series 4" High Flow Metallic Catted Downpipes for your BMW B46 four cylinder turbo engine! Fits all 2016+ 230i 330i 430i 530i X3 30i X4 30i Z4 30i 20i. The B46 engine is found in all U. S. spec cars. The downpipe is different than the B48 found in the EU Asia spec cars. You must get the correct downpipe for your car as they are not interchangeable. Key Features: Made in the USA! Manufactured in house. Now available for the