FabSpeed Porsche 964 Carrera European Pre-Muffler Cat Bypass Pipe (1989-1994)



Replace the ancient 964 factory catalytic converter with a straight-thru resonated pipe resulting in more horsepower, improved throttle response and throaty gutsy sportscar sound.  Immediate gain in sports car sound, power and fuel economy. Simple logical bolt-on performance.                                                   


  • Fits all Porsche 964 C2, C4, RS America, Euro RS and Speedster vehicles worldwide 1989-1994

  • Increases horsepower and torque by 16 whp and 14 ft-lbs greatly improving throttle response

  • Constructed from 14-16 gauge, T304L C.N.C mandrel bent stainless steel

  • Straight-through resonator with stainless steel wool packing- so it doesnt burn out.

  • 100% INTENDED for RACING COMPETITION events ONLY. Never ever to be driven or used on the public roads under any circumstances. NOT CARB approved NOT EPA approved and never will be approved. Caveat Emptor.

  • Includes intergrated O2 sensor bung for air/fuel ratio management

  • Simple bolt-on installation 5 pieces of hardware to be removed and replaced.

  • LOOKS like a catalytic converter and absorbs sound so car is not too loud. 

  • Fabspeed Motorsport USA your trusted air-cooled expert with over 25 years of experience. 

  • A exact replica of the European racing part for certain world markets. 

  • All Fabspeed performance products are backed by the Fabspeed Lifetime Warranty





DISCLAIMER: This product removes the OEM catalytic converters from the vehicle, and as such, is strictly intended for closed track events and off-road use only. Racing Cat Bypass Pipes are solely intended for track and race cars as they are NOT California Air Resources Board Certified and not EPA certified. You are hereby informed and warned to check your local, state, and federals laws before buying and installing these or any aftermarket parts to be sure whether usage is in violation. All installation-risk and use-risk is borne by the end-user and installer of these parts.