Fabspeed Competition Cat-Bypass X-Pipe for Porsche 996 GT3 (1999–2005)

The competition Fabspeed crossover replaces the catalytic converters on the Porsche 996 GT3 with a lighter catalyst-free X-pipe. It is aimed at a racing exhaust layout and produces substantially more volume than the original converter section. Based in Fort Washington, Pennsylvania, Fabspeed Motorsport designs exhaust systems, air intakes and ECU tuning for Porsche and other sports cars. Dynamometer testing, road evaluation and racetrack development inform its product range.

Technical Details

• Manufacturer part number: FS.POR.996GT3.CBX.
• Mandrel-bent T304L stainless-steel construction.
• Manufacturer-reported weight saving: 25 lb.
• Fabspeed reports 12 whp and 12 lb-ft in its development testing.
• The manufacturer notes that some low-rpm torque may be lost compared with the catalyst-equipped version.
• Catalyst removal is likely to trigger the check-engine light.
• Covered by the Fabspeed Lifetime Warranty, subject to its terms and exclusions.

Use restrictions

Fabspeed restricts this product or the affected package components to closed-course competition and off-road use. They are not CARB- or EPA-certified for public-road use. Retaining a catalyst, a “STREET” option name or the absence of a warning light does not establish road-use approval. Confirm the applicable requirements before ordering.

PMB Performance brings over 20 years of Porsche parts experience to your order. Send us your VIN and details of the installed system if you need help matching this component.

Fitment & Compatibility

For 1999–2005 Porsche 996 GT3 competition applications. Verify the existing header and muffler connections and establish the permitted use before installation. This assembly contains no catalytic converters.