Replace the restrictive OEM catalytic converter with a free flowing HJS German tri-metallic race quality 200 cell HD core that flows 93% to 95% of a straight pipe. German-imported 200-cell HJS...

PURCHASE DISCLAIMER: Fabspeed Motorsport does not condone the use of emission defeat devices for any vehicles used on public streets or roadways. Fabspeed Motorsport will not tamper, remove, disable,...

PURCHASE DISCLAIMER: Fabspeed Motorsport does not condone the use of emission defeat devices for any vehicles used on public streets or roadways. Fabspeed Motorsport will not tamper, remove, disable,...

PURCHASE DISCLAIMER: Fabspeed Motorsport does not condone the use of emission defeat devices for any vehicles used on public streets or roadways. Fabspeed Motorsport will not tamper, remove, disable,...

Replaces the restrictive 800-cell factory Ferrari cats with 200-cell high-performance sport cats for improved performance and sound or as a replacement for failing/broken factory cats FEATURES: Fits...

Replaces the restrictive factory cats with high-performance 200-cell HJS sport catalytic converters for maximum performance and exotic car sound                                                     ...

PURCHASE DISCLAIMER: Fabspeed Motorsport does not condone the use of emission defeat devices for any vehicles used on public streets or roadways. Fabspeed Motorsport will not tamper, remove, disable,...

Replaces the restrictive factory catalytic converters with two ultra high-performance HJS German-imported Sport Cats for improved performance and hypercar sound. Clean and Green Performance from...

FEATURES: Fits all McLaren P1 vehicles Improves power and throttle response while adding true hypercar-worthy exhaust sound Less restriction after the turbo allows for faster spooling and boost...

High-flowing, direct bolt-on replacements for the bulky & restrictive factory catalytic converters provide increased exhaust flow, sound, and power while complying with most emissions regulations...

  HJS Emitec GERMAN Super high-performance ULTRA High-flowing, direct bolt-on replacement for the bulky & restrictive factory catalytic 700 cell converters.                                           ...

HJS German-imported 200-cell HJS HD Sport Cats increase exhaust flow for better power and throttle response and improved sports car sound.                                                   FEATURES:

High-performance bolt-on replacements for the heavy and restrictive OEM catalytic converters; increases power, sound, and throttle response.                                                           ...

German-imported 200-cell HJS Sport Cats increase exhaust flow for better power and throttle response and improved sports car sound. FEATURES: Fits all Porsche 997 GT2 vehicles (2008-2009) Less...

PURCHASE DISCLAIMER: Fabspeed Motorsport does not condone the use of emission defeat devices for any vehicles used on public streets or roadways. Fabspeed Motorsport will not tamper, remove, disable,...

  WHY YOUR SPORTSCAR MUST  ONLY HAVE  HJS GERMAN AUTOBAHN PROVEN Racing High Flow Catalytic Converters:  HJS Emission technology German imported EMITEC  catalytic converters are made from the high

  WHY YOUR SPORTSCAR MUST  ONLY HAVE  HJS GERMAN AUTOBAHN PROVEN Racing High Flow Catalytic Converters:  HJS Emission technology German imported EMITEC  catalytic converters are made from the high

Replaces the restrictive factory cats with high-performance modern catalytic converters for maximum performance and increased sports car sound FEATURES: Fits all Porsche 986 Boxster / S vehicles...

PURCHASE DISCLAIMER: Fabspeed Motorsport does not condone the use of emission defeat devices for any vehicles used on public streets or roadways. Fabspeed Motorsport will not tamper, remove, disable,...

High-flowing catalytic converters that drastically increase exhaust flow compared to the factory bulky and restrictive catalytic converters. SOUND: Expect a mild increase in exhaust volume and a...