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Fabspeed Primary Cat Bypass Downpipes

USD 1,355
Available to Order


Fabspeed Primary Cat Bypass Downpipes for BMW M5 (F1x) [S63]

Eliminate the heavy and restrictive factory catalytic converters with straight-pipe, high flowing stainless steel downpipes for maximum power and an exhilarating sound.


  • Fits all BMW F10 M5 vehicles (2011+)
  • Replaces the restrictive factory catalytic converters with a straight-through "straight-pipe" design for maximum power, increased throttle response, and an aggressive exhaust sound.
  • Constructed out of T304L stainless steel with CNC machined flanges and laser cut brackets.
  • Manufactured entirely in-house by our precision machine shop at Fabspeed Motorsport.
  • Designed to fit seamlessly with the factory exhaust system and are also compatible with any other aftermarket exhaust system that is designed to fit like OEM.
  • Includes two downpipes, labeled left side and right side for easy installation, and hardware.
  • This product replaces the factory catalytic converters and may trigger a Check Engine Light.


  • BMW M5 (F10) [S63]


Fabspeed Motorsport
Vehicle Fitment:
  • BMW M5 (F1x) [S63]


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