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Dinan Freeflow Axleback Exhaust System for Select 2015-2020 BMW M3 & M4 - Black Quad 3.5in Tips

$2,399.95 $2,699.95
-11%
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Dinan Freeflow Axleback Exhaust System for Select 2015-2020 BMW M3 & M4 - Black Quad 3.5in Tips
$2,399.95 $2,699.95
$2,399.95 $2,699.95

Fits 2015-2020 BMW M3 and M4 (Base, CS, and GTS).

The Dinan Freeflow Axleback Exhaust System (D660-0050-BLK) is engineered to enhance the acoustics and performance of the F8x chassis. Constructed from 100% 304 stainless steel, this system uses computer-controlled valves to provide a civilized tone during low-speed cruising and a free-flowing, aggressive note under high-load conditions. The twin 76mm secondary valves are 45% less restrictive than the OE components, contributing to a measured gain of +5 horsepower while reducing overall weight by 3 lbs compared to the factory unit. This system integrates drone abatement technologies to maintain cabin comfort and retains full M-Drive exhaust tone functionality.

  • 100% 304 stainless steel construction for maximum corrosion resistance
  • Twin 76mm secondary exhaust valves (45% less restrictive than OE)
  • Quad 3.5-inch laser-engraved tips with a black ceramic coating
  • Direct bolt-on installation using factory brackets, hangers, and actuators
  • Drone abatement technology reduces cabin resonance
  • Weight reduction: 3 lbs lighter than stock exhaust
  • Performance increase: +5 horsepower
  • MPN: D660-0050-BLK
📘 Guides & Manuals
🔧 Fitment & Compatibility
Year Make Model Submodel
2015-2018 BMW M3 Base
2015-2020 BMW M4 Base
2019-2020 BMW M4 CS
2016 BMW M4 GTS

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