FabSpeed BMW M5 F10 Primary Sport Cat Downpipes

HJS German imported catalytic converters are made from some of the highest grade materials you can find in a catalytic converter. This yields high performance gains and longevity so it wont deteriorate over time like lower grade catalytic converters. These catalytic converters flow up to 93-95% of a straight pipe in most applications. The benefit is that you get the "straight pipe sound" while still being able to provide enough emissions scrubbing to prevent a check engine light.     Eliminate the heavy and restrictive factory catalytic converters with HJS German Tri-metallic imported 200 cell 92% flow high flowing stainless steel downpipes for maximum power and an exhilarating sound.                                                                                                                          FEATURES: Fits all BMW F10 M5 vehicles (2011+) Replaces the restrictive factory catalytic converters with ultr premium quality HJS German emissions technology extra large 200CPSI ca