Please wait… 
Please wait while we process your order,
do not press the back button… 
Design911 Design 911 supply Porsche parts, Porsche spares and Porsche accessories, to both retail and to the trade. Our Porsche product and accessory range includes brakes, exhausts, tyres, wheels and Porsche panels and interiors. https://www.design911.co.uk/images/schemaLogo.png https://www.design911.co.uk/images/schemaLogo.png https://www.design911.co.uk Facebook Instagram
Select your vehicle to check compatibility
FSPOR9972TCB
Product Information
Product Information
Fabspeed Cat By-Pass Pipes.
The Fabspeed Cat Bypass Pipes are high-performance straight-through exhaust pipes developed for the Porsche 997.2 Turbo and Turbo S from 2010–2012.

Fits:
  • Porsche 997 MKII Turbo / Turbo S 2010-12

Designed specifically for track and off-road applications, these pipes replace the restrictive factory catalytic converters with a freer-flowing exhaust path. Removing the catalyst section reduces exhaust restriction after the turbochargers, allowing exhaust gases to exit more freely while producing a significantly louder and more aggressive exhaust note.  

What This Product Does:

The factory exhaust system uses catalytic converters to treat exhaust gases before they leave the vehicle.

Although catalytic converters perform an important emissions-control function, they also create some resistance to exhaust flow.

The Fabspeed Cat Bypass Pipes remove this catalyst section entirely and replace it with straight-through stainless-steel tubing.

Their purpose is to provide:

  • Increased exhaust flow
  • Reduced exhaust restriction
  • Improved throttle response
  • Increased performance potential
  • Reduced exhaust-system weight
  • Increased exhaust volume
  • More noticeable turbocharger spool
  • More aggressive flat-six exhaust sound

These characteristics make the pipes primarily suited to track and competition vehicles where maximum exhaust flow is prioritised over road-going emissions compliance.

When Might Cat By-Pass Pipes Be Considered:
These pipes are not conventional replacement catalytic converters.

They are a track-focused performance modification intended to remove the catalytic-converter section completely.

They may be considered when:

  • Building a closed-course track vehicle
  • Maximum exhaust flow is desired
  • A more aggressive exhaust note is wanted
  • Increased turbo spool sound is desired
  • Reduced exhaust-system weight is important
  • The vehicle is being modified for competition use
  • Other compatible performance upgrades are being installed

For a road-going vehicle, catalytic converters should not simply be removed as a replacement for failed components.

Why Replacement Matters:
A damaged or internally collapsed catalytic converter can restrict exhaust flow.

This can lead to:

  • Reduced engine performance
  • Poor throttle response
  • Increased exhaust backpressure
  • Excessive exhaust temperatures
  • Engine-management faults
  • Poor acceleration

On a road-going vehicle, the correct solution is normally to diagnose the cause and replace a failed catalytic converter with an appropriate emissions-compliant component.

For a dedicated track or off-road vehicle, Fabspeed Cat Bypass Pipes provide an alternative performance configuration that removes the catalysts and maximises exhaust flow.



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

FSPOR9972TCB
FSPOR9972TCB

The product you are viewing cross references to these numbers