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Product details
The Fabspeed Secondary Catalyst Bypass Pipes replace the secondary converter sections on the 2011–2014 Porsche 958 Cayenne S and GTS. They connect the remaining exhaust through open stainless tubing, removing the catalyst cores from that portion of the system. From Fort Washington, Pennsylvania, Fabspeed Motorsport develops Porsche and other sports-car exhausts, intakes and ECU software through dyno testing, road use and racetrack evaluation.
Technical Details
- Manufacturer part number: FS.POR.958V8.CB
- Polished T304L stainless-steel construction.
- Direct secondary-converter replacement arrangement.
- A louder exhaust note is expected from the reduced restriction.
Installation Resources
Fitment & Compatibility
| Years | Make | Model / chassis | Version / application | Fitment notes |
|---|---|---|---|---|
| 2011–2014 | Porsche | Cayenne (958) | S / GTS; petrol | Match the secondary-catalyst connections and dimensions. Closed-course competition use only; retaining primary catalysts does not establish road approval. |
Match the 958 Cayenne S / GTS petrol exhaust configuration and connection dimensions. These are closed-course competition parts, not CARB- or EPA-certified public-road replacements. The primary catalysts remaining on a car do not make secondary-catalyst removal road-approved.
Unsure which configuration your Porsche needs? PMB Performance draws on over 20 years of Porsche parts experience to help with fitment questions.
