Making the S55 sound great. Again. Presenting the second generation AWE Exhaust Suite for the BMW F8X M3 and M4:

• Unified design for OPF euro and non-euro spec cars (2015 - 2020 fitments confirmed)
  
• 50-state legal catback design: sick sound with all catalysts intact
  
• Precision-engineered X-pipe to unlock a clean S55 tone
  
• Available as valved SwitchPath™ or rowdy Track Edition
  
• SwitchPath™ utilizes factory valving and retains M-Sport button functionality
  
• 3” CNC mandrel-bent catback configuration
  
• Max gains of 12 hp and 16 ft-lbs of torque at the wheels
  
• Track Edition comes complete with AWE machined mechanical valve simulators
  
• Tip options include 102mm double-walled, slash-cut tips in chrome silver or diamond black
  
• Handcrafted from U.S.-sourced .065" wall T304L stainless steel
  
• Proudly engineered, designed, and manufactured in-house at AWE
  
• No Check Engine Light Guarantee
  
• Perfect Fitment Guarantee
  
• Featuring the AWE Lifetime Exhaust Warranty