Dinan Free Flow Axleback Exhaust - Black Tips - BMW F90 M5

Dinan engineered the F90 M5 axleback with 83mm tubing — 3mm larger than OEM — to allow freer flow through the entirety of the system before gases reach the muffler. The muffler itself uses a combination of absorption and reactive damping technologies to reduce low-RPM drone while stepping aside under hard acceleration, when the retained computer-controlled exhaust valves open fully and bypass the muffler. Stock valve actuators are reused, so M-Drive exhaust mode still adjusts the system exactly as it did from the factory. Quiet in traffic. Loud at full load.

Features:

+ 83mm tubing — 3mm larger than OEM for freer system flow
+ Retains factory computer-controlled valves and M-Drive exhaust mode integration
+ Absorption and reactive damping muffler tech — reduced drone at low RPM
+ Black ceramic laser-engraved tips
+ BMW F90 M5 fitment (S63)