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BBi StreetCup Exhaust Bypass for 2006-16+ Porsche 911 GT3/GT3RS [997 / 991] BBIEX9791GT3


Quick Overview

Unleash the sound your GT3 was born to make, the BBi StreetCup bypass was designed to respect the highest in both quality and function. (BBIEX9791GT3)

Sku # : BBi-9791-GT3-Bypass-AF
  • Dump the boring muted OEM sound for a head turning deep aggressive exhaust note
  • Embrace the GT3's racing heritage with further weight reduction improving road handling performance both on and off the track


  • 40lb Weight reduction Vs Stock
  • 100% Emission Legal
  • Over sized 3.0" Piping
  • Minimized Restriction w/o resonators
  • Hand Built & TIG Welded


  • 2006-2011 Porsche 911 GT3 & GT3RS (997)
  • 2013+ Porsche 911 GT3 & GT3RS (991)


BBi Autosport 991/997 StreetCup Exhaust Bypass BBi Autosport 991/997 StreetCup Exhaust Bypass
BBi Autosport 991/997 StreetCup Exhaust Bypass BBi Autosport 991/997 StreetCup Exhaust Bypass

Put your GT3 On A Diet

Your GT3 was born on the race track, but there is still room for improvement.

The Factory exhaust system uses a secondary muffler/resonator chamber to comply to local laws, these two resonators weight over 44lbs! BBi's StreetCup Bypass sheds this weight with an ultra light weight 4lb bypass.

Removing Restriction


The OEM resonator chambers act as baffles restricting exhaust flow and reducing peak performance. BBi's StreetCup Bypasses TIG welded with gradual bends maximizing exhaust velocity and improving engine performance



If you have any questions about this or other BBi  911 products please give us a call at 714-582-3330

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