FabSpeed BMW M3 & M4 F80 / F82 Secondary Cat Bypass X-Pipe

Increase power and sound with a free-flowing x-pipe section that replaces the restrictive and redundant factory secondary catalytic converters for increased exhaust flow.                                        This system was born through a customer's request for a more aggressive exhaust note out of his M-Performance rear muffler equipped M3, and when it comes to new development we are happy to oblige. We have developed a secondary cat bypass X-pipe to remove the restrictive factory catalytic converters and improve the sound. Up the tone without drone! FEATURES Fits all BMW F80 / F82 M3 & M4 vehicles (2015+) including vehicles equipped with the M-Performance Exhaust - Select Your Trim Level Above. NOTE: Does NOT fit F83 convertible. Simple bolt-on installation with NO Check Engine Lights - Minor cutting required for removal of OEM part on Standard M3 / M4 Model Dramatic improvement in exhaust tone Direct replacement for restrictive and redundant OEM secondary catalytic co