BMW 2,3,4,5,6,7-Series ARM 6" B58 Catted Downpipe - 240i 340i 440i 540i 640i 740i VRSF The new forgings were redesigned

The new forgings were redesigned to create extra deep

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

This kit comes equipped with a Catback Exhaust System and all necessary clamps and hardware

– 17mm Nuts are standard for torque up to 105ftlbs

BMW 2,3,4,5,6,7-Series ARM 6" B58 Catted Downpipe - 240i 340i 440i 540i 640i 740i VRSF The new forgings were redesignedThe 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