Fabspeed Cat Bypass & Down Pipe Kit 2017+ Porsche Boxster/Cayman 718

Sale Price$1,866.95 USD
In Stock. Ready To Ship

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Free ground shipping.

This kit is built per order. Deliver time can be 1-2 weeks.

This product is for Racing Competition only and is not legal for use in highway or street vehicles or other non-racing competition off-road vehicles. Purchasing this product requires you to sign our Vehicle Compliance Waiver Here

The Fabspeed cat bypass pipe with down pipe is a great bolt-on modification for any 718 Turbo owner who wants the most aggressive sound and performance.

Fabspeed uses all mandrel bent T304L stainless steel 3 inch tubing that splits into 2 inch tubing.

This upgrade significantly enhances flow while preserving appropriate exhaust gas velocity. This is a seamless replacement for the factory catalytic converter and down pipe, easily bolted on for maximum performance.


The  cat bypass pipe with down pipe adds a lot more volume to the characteristic boxer engine rumble.

Expect cracks and burbles during shifting and deceleration, especially when in sport mode. A significant increase in turbo sound as well, which can be enhanced even further at any point with the separate addition of Fabspeed's Maxflo exhaust.


Fabspeed's cat bypass pipe with down pipe will add an estimated 25 wheel horsepower. You can extract even more power with a Fabspeed ECU tune.


Made from T304L stainless steel, with impeccable welding and your choice of either handcrafted single-wall stainless steel tips or premium matte carbon fiber shrouded tips for a polished finish.


  • Fits all 2017+ Porsche 718 Boxster/Cayman Base/S models Worldwide. Also fits 2017-20 GTS models
  • Improves power, sound, and throttle response by decreasing back pressure and increasing exhaust flow
  • Simple bolt-on installation. Instructions included 
  • Designed to fit left hand drive and right hand drive cars worldwide
  • Significant performance gains across the RPM band. Estimated +25HP gained over the factory unit
  • Even more power can be unleashed with an ECU tune.
  • Optional O2 spacers available to minimize check engine light occurrences
  • Superior quality USA components that are TIG welded in house by hand
  • 3 inch T304L stainless steel construction


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