FabSpeed Porsche 964 Turbo 965 Muffler Bypass Zork Tube (1990-1994)



Huge reduction in turbo lag for maximum possible power and sports car sound; based off of the Porsche factory 934 IMSA racecar design                                                       



  • Fits all Porsche 964 Turbo 965 vehicles (1990-1994)

  • Increases horsepower and torque by 46 whp and 65 ft-lbs 

  • Constructed with 3.0" 76mm tubing for maximum flow

  • Integrated angle-cut outlet 

  • 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.

  • Simple DIY installation in less than 1 hour

  • Just like the faftory Porsche 934 IMSA racing parts perfect for your race car and easy to install at the racetrack and remove and reinstall OEM catalytic converter to be emissions compliant. 

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