Dinan Free Flow Axle-Back Exhaust - 2015-2019 BMW X5M/X6M

Stainless Steel - Black Tips - F85/F86

Part # D660-0054A-BLK Be the first to write a review
Estimated shipping date: 02/15/2022
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The F85 X5M and F86 X6M are the quintessential SUV in terms of power and performance with accolades in numerous periodicals crowning them the pinnacle of their class. With the possibility of putting down over 700 HP with a base tune, these vehicles are no slouch. Dinan engineers wanted to match this impressive feat with an equally impressive exhaust tone that let those around these SUV's hear the power that lies beneath the hood as well as be able to show it. The exhaust system was designed to improve exhaust flow by reducing back pressure, resulting in increased power output and a deep sound that is civilized when you want it to be, and pleasantly aggressive under hard acceleration. Dinan also incorporates a Helmholtz chamber design that reduces resonance or "drone" at low RPM. The technology within the can is matched in impressiveness by its outward appearance and design as the system is built to exacting specifications to ensure a simplistic bolt-on installation. It is made from 100% 16 gauge 304 stainless steel and will resist corrosion for years to come. The design features quad 89mm (3.5") black ceramic or polished exhaust tips for a tasteful high-performance look.


  • 8 HP @ 6000 RPM, 7 LB-FT @ 6000 RPM
  • Quad 89mm (3.5") polished or cermic black laser engraved exhaust tips
  • Enjoyably louder, sportier sound with a deep growl
  • Helmholtz chamber to reduce drone
  • Computer controlled valve limits noise during low speed driving; valve opens fully during high-load conditions to allow free flow
  • 100% 304 stainless steel construction
  • Uses the factory brackets and hangers for a factory-like fitment
Brand Dinan
Dinan Point Value3
Emission Code5
Labor Time (Hours)1.5
Max HP Gain8 @ 6000 RPM
Max Torque (lb-ft) Gain7 @ 6000 RPM
Product TypeAxle-Back Exhaust
Part NumberD660-0054A-BLK

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.


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