BMW M3/4 (F80/82/83) - Cat Delete Downpipes

Using a test pipes removes the flow restriction a catalytic converter places on an exhaust system, while increasing the horsepower.

The silencing effect of the converters are also removed, enhancing the aggressive engine sound. Test pipes are ideal for track days and race application.

Lambda or Oxygen Sensor Bungs are pre-installed and threaded.

Made from T309 (1.4828) stainless steel.

IMPORTANT:

*For Off-Road and Track Use Only*

Test pipes may trigger a CEL (Check Engine Light).