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Cobb 15-20 Subaru WRX CVT / 14-18 FXT GESI Catted 3in. SS Resonated J-Pipe

Cobb 15-20 Subaru WRX CVT / 14-18 FXT GESI Catted 3in. SS Resonated J-Pipe


Regular price $1,150.00 USD
Regular price Sale price $1,150.00 USD
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This product has been discontinued. We recommend the Grimmspeed J-Pipe as an alternative.

The COBB Tuning GESI Catted 3" J-Pipe begins with a CAD-designed 4" cast bellmouth that smoothly blends air exiting the turbocharger's turbine housing straight into the GESI High-flow Catalytic Converter. Minimizing turbulence when exhaust gasses from the wastegate join into those flowing through the turbine helps to prevent excessive back-pressure.

A welded bracket utilizes the factory hard mount near the transmission reducing stress on the turbocharger mounting bolts and studs.

Corrosion-resistant and mandrel bent 3" 304 Stainless Steel tubing carries exhaust gasses downstream into a COBB-exclusive GESI 300 cell high-flow catalytic converter. A second O2 bung is located directly after the catalytic converter and is to be used by the OEM Rear O2 sensor.

A CAD-designed, cast 304 stainless steel, flange finishes off the tail section of the J-Pipe. The reinforced cast flange is less susceptible to warp during assembly and for those of you installing with the strength of Hulk. A stainless adapter flange and included MLS gasket allow direct fit with the factory exhaust or COBB Cat-Back Exhaust utilizing the OEM donut gasket. Included COBB proprietary shoulder nuts allow installation of the factory spring bolts without fuss.

*NOTE: COBB Charge Pipe Kit is required for installation.


  • High Flow GESI Catalytic Converter
  • 3" 304 Stainless Steel Construction with Resonator
  • CAD-Designed 4" Cast Turbo Outlet for Maximum Flow
  • Cat-Back Connection - 3" Flat Flange or Donut Adapter
  • Custom Tuning Required
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