aFe Power Product Twisted Steel Down-Pipes 2015-2016 BMW M3/M4

aFe is proud to introduce a product update to the Elite Twisted Steel Down-Pipes for the 2015-2016 BMW M3/M4 (F80/82) with L6-3.0L (tt) S55 engine.

  • These performance down-pipes are constructed out of 3” high quality, 304 stainless steel tubing that is mandrel-bent to reduce restriction and improve efficiency.
  • In testing, the catted down-pipes resulted in gains up to +21 horsepower and +23 lbs. x ft. of torque verified by our in-house dyno.
  • Dual, high flow, 200 cell catalytic converters and high quality V-band turbo flanges are TIG-welded for superior strength. The down-pipes retain factory O2 sensor locations for a true bolt-on application.


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