Fabspeed European Pre-Muffler for Porsche 911 SC/Carrera (1976–1989)

The Fabspeed European pre-muffler replaces the catalyst section on the listed Porsche 911 SC and Carrera exhaust with a resonated, straight-through pipe. It changes both volume and exhaust flow, so it should not be mistaken for a catalyst-equipped replacement. Fabspeed Motorsport is based in Fort Washington, Pennsylvania, where it develops exhaust, intake and ECU-tuning products for Porsche and other sports cars. Its development work includes dynamometer testing and evaluation on the road and racetrack.

Technical Details

• Manufacturer part number: FS.POR.911.CB.
• Mandrel-bent T304L stainless steel.
• Straight-through resonator with stainless-steel-wool packing.
• Oxygen-sensor bung is included for the applicable fuel-injection arrangement.
• Fabspeed reports approximately 8 lb saved compared with the original converter section.
• 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.

Installation Resources

• 911 Carrera Cat Bypass & Sport Cat.pdf

Fitment & Compatibility

Manufacturer coverage is the 1976–1989 Porsche 911 SC/Carrera family with compatible exhaust connections. Match the actual engine, heat-exchanger arrangement and sensor provision. Because the catalytic section is replaced by a bypass, confirm the applicable restrictions before ordering.