991 GT3/GT3RS GMG WC Long-Tube Headers

$5,895.00
  Engineered and developed on the track, the GMG WC Long-Tube headers were designed to provide a consistent increase in power throughout the powerband.  The design stems from our professional racin... Read More
  • More Deatils

  Engineered and developed on the track, the GMG WC Long-Tube headers were designed to provide a consistent increase in power throughout the powerband.  The design stems from our professional racing experience in running Porsche 3.8L and 4.0L engines throughout a broad spectrum of motorsports.  While this header increases overall power output, it’s focus in the low and mid-range powerband. 

  This header incorporates German-made HJS 200-Cell Metal-Matrix Sport Catalytic Converters.  These dramatically cut down on obnoxious fumes inherent with race headers.  HJS manufacturers the finest Catalytic Converters on the market today.

Innovative Design - While the header features a Long-Tube unequal-length design, it is still modular with the rest of the exhaust system.  This means you will be able to keep your sport button function if you are racing at a noise-restricted circuit.

Fabrication - Each header is fabricated right here in Southern California.  We use only the highest quality US-produced stainless steel tuning and laser-cut flanges.  Each join is TIG welded and precisely normalized.  The finished header features an exceptional finished and is peerless in its quality and durability.

Highlights:
  • Equal length runners
  • True 3-into-1 F1-style merge collector
  • German made high-flow 200 cell HJS HD catalytic converters
  • Increase horsepower and torque throughout rev range
  • TIG welded using US Made T304 stainless tubing
  • CNC machined extra-thick flanges to prevent warping
  • Direct bolt on replacement, no removal of bumper required
  • Sport button remains fully functional for everyday use

Vehicle Fitment: 

  • 2017-current Porsche 991.2 911 GT3
  • 2014-2016 Porsche 991.1 911 GT3
  • 2016 Porsche 991.1 911 GT3RS
  • 2016 Porsche 991 911 R

**Installation is available at our Southern California location, or at any of our world-wide network of authorized dealers.  This system is not CA SMOG legal and therefore intended for off-road use only.

  Engineered and developed on the track, the GMG WC Long-Tube headers were designed to provide a consistent increase in power throughout the powerband.  The design stems from our professional racing experience in running Porsche 3.8L and 4.0L engines throughout a broad spectrum of motorsports.  While this header increases overall power output, it’s focus in the low and mid-range powerband. 

  This header incorporates German-made HJS 200-Cell Metal-Matrix Sport Catalytic Converters.  These dramatically cut down on obnoxious fumes inherent with race headers.  HJS manufacturers the finest Catalytic Converters on the market today.

Innovative Design - While the header features a Long-Tube unequal-length design, it is still modular with the rest of the exhaust system.  This means you will be able to keep your sport button function if you are racing at a noise-restricted circuit.

Fabrication - Each header is fabricated right here in Southern California.  We use only the highest quality US-produced stainless steel tuning and laser-cut flanges.  Each join is TIG welded and precisely normalized.  The finished header features an exceptional finished and is peerless in its quality and durability.

Highlights:
  • Equal length runners
  • True 3-into-1 F1-style merge collector
  • German made high-flow 200 cell HJS HD catalytic converters
  • Increase horsepower and torque throughout rev range
  • TIG welded using US Made T304 stainless tubing
  • CNC machined extra-thick flanges to prevent warping
  • Direct bolt on replacement, no removal of bumper required
  • Sport button remains fully functional for everyday use

Vehicle Fitment: 

  • 2017-current Porsche 991.2 911 GT3
  • 2014-2016 Porsche 991.1 911 GT3
  • 2016 Porsche 991.1 911 GT3RS
  • 2016 Porsche 991 911 R

**Installation is available at our Southern California location, or at any of our world-wide network of authorized dealers.  This system is not CA SMOG legal and therefore intended for off-road use only.