BMW 2,3,4,5,6,7-Series ARM 6" B58 Catted Downpipe - 240i 340i 440i 540i 640i 740i VRSF Manufactured to meet ISO/TS and

Manufactured to meet ISO/TS and TÜV standards

The increased volume and improved turbo spool that from the catless variations are still present in our 6" B58 Catted Downpipe

The performance rewards are just as great as the sound

Made from 100% carbon fiber for a sleek and sophisticated look

BMW 2,3,4,5,6,7-Series ARM 6" B58 Catted Downpipe - 240i 340i 440i 540i 640i 740i VRSF Manufactured to meet ISO/TS andThe ARM 6" B58 Catted Downpipe is perfect if you're looking for all of the performance of a Catless B58 Downpipe without the odor associated with increased emissions. Our B58 Catted Downpipe design incorporates a 6" high flow 200 cell ceramic catalytic converter, making it a standout choice for those seeking power without while reducing emissions. The increased volume and improved turbo spool that from the catless variations are still present in our