Replace the worn-out or broken core of your factory Porsche catalytic converter(s) with a new high-performance HJS tri-metallic catalytic converter core. FEATURES: Fabspeed Motorsport can replace...

Replace the worn-out or broken core of your factory Porsche catalytic converter(s) with a new high-performance HJS tri-metallic catalytic converter core. FEATURES: Fabspeed Motorsport can replace...

Replace the worn-out or broken core of your factory Porsche 964 Turbo or Carrera catalytic converter(s) with a new high-performance HJS tri-metallic catalytic converter core. FEATURES: Fabspeed...

Replaces the restrictive factory cats with high-performance HJS Racing sport cats for maximum performance and sound. SOUND: Dramatically improve the sound of your GranTourismo by ditching the sound...

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

Replace the worn-out or broken core of your factory Ferrari catalytic converter(s) with a new high-performance HJS tri-metallic catalytic converter core. FEATURES: Fabspeed Motorsport can replace the...

Replace the worn-out or broken core of your factory Ferrari catalytic converter(s) with a new high-performance HJS tri-metallic catalytic converter core. FEATURES: Fabspeed Motorsport can replace the...

Replace the worn-out or broken core of your factory Porsche catalytic converter(s) with a new high-performance HJS tri-metallic catalytic converter core. FEATURES: Fabspeed Motorsport can replace...

Replace the worn-out or broken core of your factory Porsche catalytic converter(s) with a new high-performance HJS tri-metallic catalytic converter core. FEATURES: Fabspeed Motorsport can replace...

Replace the worn-out or broken core of your factory Porsche catalytic converter(s) with a new high-performance HJS tri-metallic catalytic converter core. FEATURES: Fabspeed Motorsport can replace...

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

Replace the worn-out or broken core of your factory Ferrari catalytic converter(s) with a new high-performance HJS tri-metallic catalytic converter core. FEATURES: Fabspeed Motorsport can replace the...

Replace the worn-out or broken core of your factory Ferrari catalytic converter(s) with a new high-performance HJS tri-metallic catalytic converter core. FEATURES: Fabspeed Motorsport can replace the...

Replace the worn-out or broken core of your factory Ferrari catalytic converter(s) with a new high-performance HJS tri-metallic catalytic converter core. FEATURES: Fabspeed Motorsport can replace the...

Replace the worn-out or broken core of your factory Porsche 911 3.0 /3.2L catalytic converter(s) with a new high-performance HJS tri-metallic catalytic converter core. FEATURES: Fabspeed Motorsport...

Replaces the restrictive factory cats with high-performance HJS sport catalytic converters for maximum performance and sound. SOUND: Give your Murcielago a significant bump in volume and high...

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...

Replace the worn-out or broken core of your factory Porsche catalytic converter(s) with a new high-performance HJS tri-metallic catalytic converter core.                                     FEATURES:

Inject new life into your M235i with a perfect high-flow catted downpipe! Genuine 200-cell HJS HD catalyst instantly adds a staggering 21 whp and 36 ft/lbs of torque at 3000 RPM without triggering a...

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...