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Part # D660-0060

Dinan High Flow X-Pipe – 2015-2020 BMW M3/M4

Dinan High Flow X-Pipe – 2015-2020 BMW M3/M4



  • Deletes both resonators, between catalyst and rear muffler.
  • Stock hydro-formed 65mm tubing is replaced by 2.75″ (70mm) mandrel-bent tubing for free flow.
  • Includes X-pipe crossover made from mandrel bent tubing for minimum restriction, unlike stamped X-pipes
  • 100% 304 stainless steel construction.
  • Bolt-on installation.
  • Includes mounting hardware.

Technical Resources

Installation Instructions

Only confirmed to fit with the Dinan Free Flow Axle Back and stock exhaust systems (non-M Performance). Fitment with other axle back units is not guaranteed.

This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.

Original price was: $1,139.00.Current price is: $1,024.95.

14 Available as of 11/18/2023


The Dinan High Flow X-pipe for the F80/F82 M3/M4 elicits an aggressive sound that is sure to capture the ear of all bystanders and delivers the aural recognition that all M3/M4 owners deserve. Coupled with the associated Dinan exhaust the sound is further perfected into an aggressive growl that harkens back to the Dinan E9x M3 racing middle exhaust. Rightly so, as the same custom ‘X’ that was used in that application is implemented on the new F8x chassis for that perfect mix of exotic undertones and raw aggression. Unlike a stamped x-pipe that is so common in the marketplace the Dinan ‘X’ is thoughtfully designed for maximum flow characteristics and by itself is a work of art.

The Dinan X-Pipe removes the factory center section after the secondary catalytic converters, including the large resonator. In its place Dinan introduces straight through mandrel bent 2.75″ T304 stainless steel tubing and the custom ‘X’ for better flow, and an improved throaty sound. In addition, the kit comes complete with mounting hardware, OE quality clamps, and flanges, for simplified installation.

NOTE: Since a resonator is deleted there is potential for increased cabin noise associated with the Dinan High Flow X-Pipe. Please consult the media below for a representative video to determine if the product is right for you.




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