WHY YOUR SPORTSCAR MUST  ONLY HAVE  HJS GERMAN AUTOBAHN PROVEN Racing High Flow Catalytic Converters:  HJS Emission technology German imported EMITEC  catalytic converters...

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

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...

Genuine HJS Tuning catalytic converter cores for replacement/upgrade of restrictive factory cats.  This is an individual catalyst; welding required.            ...

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...

Meet the strictest of emissions standards while freeing up power with an HJS 200-cell Euro 6 sport catalyst downpipe.            This downpipe is produced by HJS...

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...

Alpha Performance Porsche 997.1TT Intercooler System We developed the Alpha Performance Porsche 997.1TT Intercooler System to provide you the best air induction cooling upgrade for your Porsche 997...

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

Fabspeed's Valvetronic Exhaust System is the ultimate cat-back performance exhaust for the ultimate street-drivable GT4 dual use street/track car. New anti-resonance technology makes for the Worlds...

  High-flow modern high performance replacement cell catalytic converter. A direct bolt-on replacement catalytic converter for the bulky & restrictive factory catalytic converter that might...

Fabspeed's Sport Catalytic Converter utilizes a high-performance 200 cell cat for maximum performance and sound. The Sport Cat alone requires the Fabspeed Downpipe for installation. SOUND: A free...

High-performance bolt-on replacement for the heavy and restrictive OEM catalytic converter. Increase the power, sound, and throttle response of your 308. SOUND: Experience the way your 308 was meant...

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,...

Meet the strictest of emissions standards while freeing up power with an HJS 200-cell Euro 6 sport catalyst downpipe.            This downpipe is produced by HJS...

Unleash a new level of aggressive styling and sound with Fabspeed's McLaren Valvetronic Sport Catalytic Converter Exhaust System complete with revolutionary 918-style top exit exhaust tips...

Fabspeed Audi SQ8 Sport Catalytic Converters replace the restrictive factory cats with high-performance German-imported 200-cell HJS catalytic converters for significantly improved performance and...