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Catalyst / Bypass

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L-PO/SS/1H
Product Information
Product Information
Constructed from high-quality stainless steel, this optional addition to the Slip-On Line will enhance the sound of the exhaust, and power will be taken to greater heights. Fitted with sporty catalytic converters that meet ECE requirements, installing this option increases the engine's performance and adds an aural improvement for all to appreciate. Providing improved flow for the exhaust gases, the link pipes take the 911 to greater heights.

Fits:
Porsche 911 (991.2) Carrera / S / 4/ 4S / GTS 2017>>

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Related, superseded, cross reference or alternative numbers for comparison.

L-PO
9P1254400
9P1254400X
9P1254450
9P1254450X

The product you are viewing cross references to these numbers
L-PO/SS/2H
Product Information
Product Information
Akrapovic link pipe set w cat (SS)

Fits:
Porsche 911 (991.2) Turbo / Turbo S 2018>>

Constructed from high-quality stainless steel , this optional addition to the Slip-On Line will enhance the sound of the exhaust, and power will be taken to greater heights. Fitted with sporty catalytic converters, installing this option increases the engine's performance and adds an aural improvement for all to appreciate. Providing improved flow for the exhaust gases, the link pipes take the 911 to greater heights.

NOTE: Sports catalytic converters and bypass pipes do not have type approval and are not legally permitted for use on vehicles manufactured after 1st March 2001 in the United Kingdom. They are not MOT compliant and must not be used on public roads. These components are intended for race and track use only. If you are located outside the UK, please consult your local laws and regulations to ensure compliance.

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Related, superseded, cross reference or alternative numbers for comparison.

L-PO
99711300930
997113009AX
99711301030
997113010AX

The product you are viewing cross references to these numbers
FSPOR9912GT3CRX
Product Information
Product Information
Cat back Competition Race X-Pipe.



The ultimate lightweight cat-back exhaust system for the 991.2 GT3 / GT3 RS saves 54lbs (24kg) off the rear of the vehicle and is perfect for competitive track use, high performance drivers education events, or aggressive street sound.

FEATURES:

• Fits all Porsche 991.2 GT3 / GT3 RS models (2017+)
• Perfect exhaust solution for maximum performance and sound during competitive track use, high performance drivers education events, or simply achieving an aggressive and exciting street sound.
• Saves over 54lbs (24kg) from the rear of the 991.2 GT3 which improves handling and acceleration by replacing the bulky factory center muffler and side mufflers
• Engineered and manufactured with 3" (76mm) T304L stainless steel tubing with integral tuned center X-Pipe to 70mm outlets.
• Bolt-on installation' no cutting or welding required
• Options of 4" Carbon Fiber Tips or 4" Stainless Steel Brushed Tips
• Includes two (2) 90 degree Turndown Tips for track use.
• All Fabspeed performance products are backed by Fabspeed's Limited Lifetime Warranty

NOTE: This is a straight pipe, racing oriented exhaust system built to be light and make power. As a result, the volume level will be very high inside the vehicle.

Please note: These sport cats will make your car sound louder than with stock cats. If you have ,or intend to install sport silencers, you may find the car is a bit loo loud. We recommend to use one sport exhaust component if you are concerned about decibel levels.

NOTE: Sports catalytic converters and bypass pipes do not have type approval and are not legally permitted for use on vehicles manufactured after 1st March 2001 in the United Kingdom. They are not MOT compliant and must not be used on public roads. These components are intended for race and track use only. If you are located outside the UK, please consult your local laws and regulations to ensure compliance.

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

FSPOR9912GT3CRX
99111104782
99111104882
99711102792
99111102790

The product you are viewing cross references to these numbers
FSPOR9912GT3CMB
Product Information
Product Information
Center Muffler Bypass Pipe.
Description Shipping & Returns Direct replacement for the failure-prone OEM GT3 center muffler providing improved flow, weight savings, and more aggressive sports car sound. Our new "Cross Over /talk-pipe" design blends the exhaust from the right and left cylinders creating an incredible smooth blended sound, and our simplified two-bolt mounting system makes installing easier than ever. This is the World's Absolute Best GT3 center muffler replacement bypass system.

FEATURES:

•    Fits all Porsche 991.2 GT3 / GT3 RS vehicles 2017- 2019 worldwide
•    Saves 10 lbs, 4.6KG from the rear of the vehicle 
•    CAT-BACK emissions legal. Bolts onto OEM Porsche catalytic converters. 
•    Retains Sport Mode control button when used with factory GT3 side mufflers. PSE works great.
•    14-16ga T304 Stainless Steel construction- back purged hand TIG welded perfection by craftsmen.
•    Works great with Fabspeed GT3 side muffler bypass pipes with or with out Helical OEM GT3 exhaust valves. 
•    Includes 4" 102mm Deluxe Style Tips in your choice of finish or Re-install factory OEM Porsche GT3 tips and or Fabspeed 90 degree turndowns.
•    Fabspeed has carbon fiber tips, polished stainless steel tips, and brushed stainless tips too.
•    All Fabspeed performance products are backed by the Fabspeed Lifetime Warranty

Please note: This is a special-order item manufactured to order. In some cases, please allow 4 – 5 weeks for the delivery. Special order items cannot be cancelled from this supplier once your order has been placed.

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

FSPOR9912GT3CMB
99711102792
99111102790

The product you are viewing cross references to these numbers
3606109913
Product Information
Product Information
Exhaust 200cell catalyst pipes. Cars with petrol particulate filter



Fits:

Porsche 991.2 3.0L Carrera

Free-flowing reduces catalyst pipes replace the bulky & restrictive factory catalytic converters; designed specifically for maximum flow during racing or competition.

FEATURES:
• Maximizes power and throttle response while decreasing back pressure.
• Partially removes the catalytic converters for higher exhaust flow and performance.
• Constructed from high-quality stainless steel for optimum flow and maximum durability.
• Direct replacement bolt-on for stock cat or Sport Cats

DISCLAIMER: This product reduces the OEM catalytic converters on the vehicle, and as such, is strictly intended for closed track events and off-road use only. This product is or contains 200 cell catalyst, which might give you check engine lights on OBD2 cars. We suggest pairing this product with racing software to prevent fault codes and check engine lights. Sport cat pipes are solely intended for track and race cars as they are NOT California Air Resources Board Certified and not EPA certified. You are hereby informed and warned to check your local, state, and federals laws before buying and installing these or any aftermarket parts to be sure whether usage is in violation. All installation-risk and use-risk is borne by the end-user and installer of these parts. Slight modification around lambda sensor might be required in order to fit this.

NOTE: Sports catalytic converters and bypass pipes do not have type approval and are not legally permitted for use on vehicles manufactured after 1st March 2001 in the United Kingdom. They are not MOT compliant and must not be used on public roads. These components are intended for race and track use only. If you are located outside the UK, please consult your local laws and regulations to ensure compliance.



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

3606109913
9P1254400H
9P1254400HX
9P1254400J
9P1254400JX
9P1254500HX
9P1254500H
9P1254500J
9P1254500JX

The product you are viewing cross references to these numbers
3606109912
Product Information
Product Information
Exhaust cat bypass pipes (for Base).



Free-flowing straight pipes replace the bulky & restrictive factory catalytic converters; designed specifically for maximum flow during racing or competition.

FEATURES:
• Fits: all Porsche 991.2 Carrera base models equipped with standard exhaust; does not fit with PSE (2016+); only fits S models as part of a complete exhaust package.
• Maximizes power and throttle response while decreasing back pressure.
• Completely removes the catalytic converters for maximum exhaust flow and performance.
• Constructed from high-quality stainless steel for optimum flow and maximum durability.
• Direct replacement bolt-on for stock cat or Sport Cats

DISCLAIMER: This product removes the OEM catalytic converters from the vehicle, and as such, is strictly intended for closed track events and off-road use only. This product is or contains a Racing Cat Bypass Pipe, which will give you check engine lights on OBD2 cars. We suggest pairing this product with racing software to prevent fault codes and check engine lights. Racing Cat Bypass Pipes are solely intended for track and race cars as they are NOT California Air Resources Board Certified and not EPA certified. You are hereby informed and warned to check your local, state, and federals laws before buying and installing these or any aftermarket parts to be sure whether usage is in violation. All installation-risk and use-risk is borne by the end-user and installer of these parts.

NOTE: Sports catalytic converters and bypass pipes do not have type approval and are not legally permitted for use on vehicles manufactured after 1st March 2001 in the United Kingdom. They are not MOT compliant and must not be used on public roads. These components are intended for race and track use only. If you are located outside the UK, please consult your local laws and regulations to ensure compliance.

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

3606109912
3606109912
992254400F
992254400FX
992254400D
992254400DX
992254400N
992254400NX
992254450F
992254450FX
992254450D
992254450DX
992254450N
992254450NX

The product you are viewing cross references to these numbers
3606109916
Product Information
Product Information
Exhaust cat bypass pipes with gaskets.



Fits:
Porsche 991.1 Turbo / Turbo S

Porsche 991.2 Turbo / Turbo S

Free-flowing straight pipes replace the bulky & restrictive factory catalytic converters; designed specifically for maximum flow during racing or competition.

FEATURES:
• Maximizes power and throttle response while decreasing back pressure.
• Completely removes the catalytic converters for maximum exhaust flow and performance.
• Constructed from high-quality stainless steel for optimum flow and maximum durability.
• Direct replacement bolt-on for stock cat or Sport Cats

DISCLAIMER: This product removes the OEM catalytic converters from the vehicle, and as such, is strictly intended for closed track events and off-road use only. This product is or contains a Racing Cat Bypass Pipe, which will give you check engine lights on OBD2 cars. We suggest pairing this product with racing software to prevent fault codes and check engine lights. Racing Cat Bypass Pipes are solely intended for track and race cars as they are NOT California Air Resources Board Certified and not EPA certified. You are hereby informed and warned to check your local, state, and federals laws before buying and installing these or any aftermarket parts to be sure whether usage is in violation. All installation-risk and use-risk is borne by the end-user and installer of these parts.

NOTE: Sports catalytic converters and bypass pipes do not have type approval and are not legally permitted for use on vehicles manufactured after 1st March 2001 in the United Kingdom. They are not MOT compliant and must not be used on public roads. These components are intended for race and track use only. If you are located outside the UK, please consult your local laws and regulations to ensure compliance.



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

3606109916
99711301030
99711300930
997113010AX
997113009AX

The product you are viewing cross references to these numbers
3606109910
Product Information
Product Information
Exhaust cat bypass pipes. Cars with petrol particulate filter

Fits:

Porsche 991.2 3.0L Carrera

Free-flowing straight pipes replace the bulky & restrictive factory catalytic converters; designed specifically for maximum flow during racing or competition.

FEATURES:
• Maximizes power and throttle response while decreasing back pressure.
• Completely removes the catalytic converters for maximum exhaust flow and performance.
• Constructed from high-quality stainless steel for optimum flow and maximum durability.
• Direct replacement bolt-on for stock cat or Sport Cats

DISCLAIMER: This product removes the OEM catalytic converters from the vehicle, and as such, is strictly intended for closed track events and off-road use only. This product is or contains a Racing Cat Bypass Pipe, which will give you check engine lights on OBD2 cars. We suggest pairing this product with racing software to prevent fault codes and check engine lights. Racing Cat Bypass Pipes are solely intended for track and race cars as they are NOT California Air Resources Board Certified and not EPA certified. You are hereby informed and warned to check your local, state, and federals laws before buying and installing these or any aftermarket parts to be sure whether usage is in violation. All installation-risk and use-risk is borne by the end-user and installer of these parts. Slight modification around lambda sensor might be required in order to fit this.

NOTE: Sports catalytic converters and bypass pipes do not have type approval and are not legally permitted for use on vehicles manufactured after 1st March 2001 in the United Kingdom. They are not MOT compliant and must not be used on public roads. These components are intended for race and track use only. If you are located outside the UK, please consult your local laws and regulations to ensure compliance.



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

3606109910
9P1254400H
9P1254400HX
9P1254400J
9P1254400JX
9P1254500HX
9P1254500H
9P1254500J
9P1254500JX

The product you are viewing cross references to these numbers
FSPOR9912CB
Product Information
Product Information
Fabspeed Exhaust Cat bypass Pipes (for Base).



Free-flowing straight pipes replace the bulky & restrictive factory catalytic converters; designed specifically for maximum flow during racing or competition.

FEATURES:
• Fits: all Porsche 991.2 Carrera base models equipped with standard exhaust; does not fit with PSE (2016+); only fits S models as part of a complete exhaust package.
• Maximizes power and throttle response while decreasing back pressure
• Completely removes the catalytic converters for maximum exhaust flow and performance
• Constructed from high-quality .065" thick T304L stainless steel for optimum flow and maximum durability
• Designed and built in-house at Fabspeed in our full precision machine shop
• Includes intergrated O2 sensor bungs
• Fabspeed recommends the use of O2 Sensor Spacers in order to minimize the chance of triggering a CEL
• Direct replacement bolt-on for stock cat or Sport Cats
• Fabspeed performance products are backed by Fabspeed's Limited Lifetime Warranty

NOTE: Fabspeed's 200-cell high-flow catalytic converters are not C.A.R.B. certified and are for Off-Road Use ONLY in the state of California

NOTE: Sports catalytic converters and bypass pipes do not have type approval and are not legally permitted for use on vehicles manufactured after 1st March 2001 in the United Kingdom. They are not MOT compliant and must not be used on public roads. These components are intended for race and track use only. If you are located outside the UK, please consult your local laws and regulations to ensure compliance.

Please note: This is a special-order item manufactured to order. In some cases, please allow 4 – 5 weeks for the delivery. Special order items cannot be cancelled from this supplier once your order has been placed.

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

FSPOR9912CB
9P1254400
9P1254400X
9P1254450
9P1254450X

The product you are viewing cross references to these numbers
FSPOR9912PSECB
Product Information
Product Information
Fabspeed Exhaust Cat bypass Pipes (for PSE).



Free-flowing straight pipes replace the bulky & restrictive factory catalytic converters; designed specifically for maximum flow during racing or competition

FEATURES:
• Fits: all Porsche 991.2 Carrera models (2016+) equipped with Porsche Sport Exhaust (PSE)
• Maximizes power and throttle response while decreasing back pressure
• Completely removes the catalytic converters for maximum exhaust flow and performance
• Constructed from high-quality .065" thick T304L stainless steel for optimum flow and maximum durability
• Designed and built in-house at Fabspeed in our full precision machine shop
• Includes integrated O2 sensor bungs
• Fabspeed recommends the use of O2 Sensor Spacers in order to minimize the chance of triggering a CEL
• Direct replacement bolt-on for stock cat or Sport Cats
• Fabspeed performance products are backed by Fabspeed's Limited Lifetime Warranty

NOTE: Fabspeed's 200-cell high-flow catalytic converters are not C.A.R.B. certified and are for Off-Road Use ONLY in the state of California

DOES MY CAR HAVE "PSE"?


The Porsche Sport Exhaust – better known as PSE – was a factory option available on many late model Porsches. You can quickly and easily determine if your vehicle is equipped with PSE by taking a look at your center console. If your console has a button on it with an "exhaust tip" icon (see photo), then your vehicle is equipped with PSE, and you should select the PSE option when adding this product to your cart. If you do not see this button, the your vehicle does not have PSE and you should select the standard exhaust option when checking out.

Please note: This is a special-order item manufactured to order. In some cases, please allow 4 – 5 weeks for the delivery. Special order items cannot be cancelled from this supplier once your order has been placed.

NOTE: Sports catalytic converters and bypass pipes do not have type approval and are not legally permitted for use on vehicles manufactured after 1st March 2001 in the United Kingdom. They are not MOT compliant and must not be used on public roads. These components are intended for race and track use only. If you are located outside the UK, please consult your local laws and regulations to ensure compliance.

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

FSPOR9912PSECB
9P1254450A
9P1254450AX
9P1254400A
9P1254400AX

The product you are viewing cross references to these numbers
FSPOR9912TCB
Product Information
Product Information
Fabspeed Exhaust Catbypass Pipes.



Increase exhaust flow from the headers to the mufflers and improving power and sound by removing the bulky and restrictive factory catalytic converter.

FEATURES:
• Fits all 991.2 Turbo vehicles (2017+)
• Fabspeed's Catbypass Pipes replace the restrictive factory catalytic converters with much less restrictive straight-through pipes for maximum flow and performance
• Noticeable increase in power and improved throttle response
• Saves 10 lbs in the rear of the vehicle versus the bulky factory catalytic converters
• Adds aggressive exhaust note for high performance sound
• Constructed from high-quality 14-16 gauge C.N.C. mandrel-bent T304L stainless steel for optimum flow and maximum durability
• Direct bolt-on replacement
• All Fabspeed performance products are backed by the Fabspeed Lifetime Limited Warranty

Please note: This is a special-order item manufactured to order. In some cases, please allow 4 – 5 weeks for the delivery. Special order items cannot be cancelled from this supplier once your order has been placed.

NOTE: Sports catalytic converters and bypass pipes do not have type approval and are not legally permitted for use on vehicles manufactured after 1st March 2001 in the United Kingdom. They are not MOT compliant and must not be used on public roads. These components are intended for race and track use only. If you are located outside the UK, please consult your local laws and regulations to ensure compliance.

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

FSPOR9912TCB
99711300930
997113009AX
99711301030
997113010AX

The product you are viewing cross references to these numbers
3606009140
Product Information
Product Information
Exhaust Muffler / Sport Switchable Race Exhaust System in Titanium DesignTek. With Cat bypass pipes.

Fits:
Porsche 991.2 3.0L cars without switchable exhaust system (PSE)

High quality titanium exhaust system for the Porsche 991.2. Manifold back exhaust that includes Catalytic converter bypass and tailpipes.

The silencers in this exhaust are linked to one another, creating a greater balance between the two silencers which improves flow, performance and provides a sports sound. It is a performance exhaust with a louder note and boasts significant power gains over OE system. This is race / offroad use only.

NOTE: Sports catalytic converters and bypass pipes do not have type approval and are not legally permitted for use on vehicles manufactured after 1st March 2001 in the United Kingdom. They are not MOT compliant and must not be used on public roads. These components are intended for race and track use only. If you are located outside the UK, please consult your local laws and regulations to ensure compliance.
FSPOR9912TSC
Product Information
Product Information
Fabspeed Exhaust Sport Catalytic Converters.


High-flowing, direct bolt-on replacement for the bulky & restrictive factory catalytic converters.

FEATURES:
• Fits all 991.2 Turbo vehicles (2017+)
• Improves power and throttle response while decreasing back pressure
• High flow sport race cat for maximum flow and power.
• Constructed from high-quality 14-16 gauge T304L stainless steel for optimum flow and maximum durability
• Includes intergrated O2 sensor bung for fuel-injected cars
• Direct replacement bolt-on for stock cat or catbypass pipe

NOTE: Fabspeed's 200-cell high-flow catalytic converters are not C.A.R.B. certified and are for Off-Road Use ONLY in the state of California

Please note: This is a special-order item manufactured to order. In some cases, please allow 4 – 5 weeks for the delivery. Special order items cannot be cancelled from this supplier once your order has been placed.

NOTE: Sports catalytic converters and bypass pipes do not have type approval and are not legally permitted for use on vehicles manufactured after 1st March 2001 in the United Kingdom. They are not MOT compliant and must not be used on public roads. These components are intended for race and track use only. If you are located outside the UK, please consult your local laws and regulations to ensure compliance.



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

FSPOR9912TSC
99711300930
97113009AX
9711301030
97113010AX

The product you are viewing cross references to these numbers
FSPOR9912SC
Product Information
Product Information
Fabspeed Exhaust Sport Cats (for Base).



High-flowing, direct bolt-on replacement for the bulky & restrictive factory catalytic converters.

FEATURES:
• Fits: all Porsche 991.2 Carrera base models equipped with standard exhaust; does not fit with PSE (2016+); only fits S models as part of a complete exhaust package.
• Improves power and throttle response while decreasing back pressure
• Designed with high flowing German imported 200-cell HJS catalysts for the ideal blend of performance and efficiency
• Constructed from high-quality .065" thick T304L stainless steel for optimum flow and maximum durability
• Designed and built in-house at Fabspeed in our full precision machine shop
• Includes integrated O2 sensor bungs
• Direct replacement bolt-on for stock cat or Catbypass Pipes
• Fabspeed performance products are backed by Fabspeed's Limited Lifetime Warranty

NOTE: Sports catalytic converters and bypass pipes do not have type approval and are not legally permitted for use on vehicles manufactured after 1st March 2001 in the United Kingdom. They are not MOT compliant and must not be used on public roads. These components are intended for race and track use only. If you are located outside the UK, please consult your local laws and regulations to ensure compliance.

Please note: This is a special-order item manufactured to order. In some cases, please allow 4 – 5 weeks for the delivery. Special order items cannot be cancelled from this supplier once your order has been placed.

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

FSPOR9912SC
9P1254400
9P1254400X
9P1254450
9P1254450X

The product you are viewing cross references to these numbers
FSPOR9912PSESC
Product Information
Product Information
Fabspeed Exhaust Sport Cats (for PSE).



High-flowing, direct bolt-on replacement for the bulky & restrictive factory catalytic converters

FEATURES:
• Fits all Porsche 991.2 Carrera (3.0L Twin Turbo) models (2017+) equipped with Porsche Sport Exhaust (PSE)
• Improves power and throttle response while decreasing back pressure
• Designed with high flowing German imported 200-cell HJS catalysts for the ideal blend of performance and efficiency
• Optimized for maximum performance with NO catalyst generated check engine light, guaranteed
• Constructed from high-quality .065" thick T304L stainless steel for optimum flow and maximum durability 
• Designed and built in-house at Fabspeed in our full precision machine shop
• Includes integrated O2 sensor bungs
• Direct replacement bolt-on for stock cat or Catbypass Pipes
• If your vehicle is equipped with a GPF Filter, please contact us prior to purchasing

NOTE: Fabspeed's 200-cell high-flow catalytic converters are not C.A.R.B. certified and are for Off-Road Use ONLY in the state of California

DOES MY CAR HAVE "PSE"?


The Porsche Sport Exhaust – better known as PSE – was a factory option available on many late model Porsches. You can quickly and easily determine if your vehicle is equipped with PSE by taking a look at your center console. If your console has a button on it with an "exhaust tip" icon (see photo), then your vehicle is equipped with PSE, and you should select the PSE option when adding this product to your cart. If you do not see this button, the your vehicle does not have PSE and you should select the standard exhaust option when checking out.

NOTE: Sports catalytic converters and bypass pipes do not have type approval and are not legally permitted for use on vehicles manufactured after 1st March 2001 in the United Kingdom. They are not MOT compliant and must not be used on public roads. These components are intended for race and track use only. If you are located outside the UK, please consult your local laws and regulations to ensure compliance.

Please note: This is a special-order item manufactured to order. In some cases, please allow 4 – 5 weeks for the delivery. Special order items cannot be cancelled from this supplier once your order has been placed.

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

FSPOR9912PSESC
9P1254450A
9P1254450AX
9P1254400A
9P1254400AX

The product you are viewing cross references to these numbers
FSPOR9912GT2RSCB
Product Information
Product Information
Fabspeed Competition Link Pipes For PSE.

The Fabspeed Competition Link Pipes are a motorsport-focused catalyst-bypass exhaust upgrade designed for the Porsche 911 991.2 GT2 RS from 2018 onward.

Fits:

  • Porsche 991.2 GT2 RS 3.8L PDK (700 bhp) 2018-19  


Developed for maximum exhaust flow and an uncompromised competition sound, the system replaces the restrictive factory ceramic catalytic converters with straight-through stainless-steel link pipes while retaining the car's Porsche Sport Exhaust – PSE – valve functionality.

The original GT2 RS uses approximately 700-cell ceramic catalytic converters. Removing these high-density catalysts creates a much less restrictive route for exhaust gases leaving the turbochargers.

This can reduce exhaust backpressure, increase turbocharger sound and provide considerably greater flow potential for highly tuned or competition vehicles.

Unlike basic straight pipes, the Fabspeed system incorporates large 74mm / 2.92in Helical Limited UK exhaust valves, compared with approximately 60mm / 2.375in factory valves.

These larger valves allow increased exhaust flow while retaining the ability to control the exhaust path through the Porsche PSE system.

What This Product Does:
The Fabspeed Competition Link Pipes replace the factory catalytic converter assemblies located downstream of the GT2 RS turbochargers.

They are designed to:

  • Remove the restriction created by the factory catalytic converters.
  • Reduce exhaust backpressure.
  • Increase exhaust gas flow.
  • Improve turbocharger outlet flow.
  • Support quicker turbo response.
  • Increase performance potential on tuned vehicles.
  • Increase turbocharger whistle and spool sound.
  • Produce a substantially louder exhaust note.
  • Retain Porsche Sport Exhaust valve functionality.
  • Replace the smaller factory exhaust valves with larger Helical valves.
  • Reduce exhaust-system weight.
  • Provide a modular competition exhaust configuration.

Symptoms Of Wear Or Failure:
Although straight exhaust pipes contain fewer internal components than catalytic converters, they can still deteriorate or become damaged.

Possible symptoms include:

  • Exhaust leaks.
  • Ticking or blowing noises.
  • Soot around joints or welds.
  • Metallic rattling.
  • Cracked welds.
  • Damaged tubing.
  • Loose clamps.
  • Excessive exhaust movement.
  • Pipes becoming misaligned.
  • Contact with heat shields or bodywork.
  • Exhaust valve rattling.
  • Valve sticking.
  • One exhaust bank sounding different from the other.
  • PSE no longer changing the exhaust sound correctly.
  • Excessive vibration around the valve assemblies.

Why Replacement Matters:
A damaged competition link pipe can compromise the performance and reliability of the exhaust system.

Replacing worn or damaged components helps restore:

  • Correct exhaust sealing.
  • Proper valve function.
  • Maximum intended flow.
  • Consistent PSE operation.
  • Correct pipe alignment.
  • Safe clearance from nearby components.
  • Structural integrity.

On a high-performance turbocharged vehicle, exhaust integrity is particularly important because of the high temperatures and gas velocities involved.

NOTE: In the United Kingdom, sports catalytic converters and bypass pipes do not have type approval and are not legally permitted for use on vehicles manufactured after 1st March 2001. They are not MOT compliant and cannot be used on public roads. These components are intended solely for race and track use.

For vehicles manufactured before 1st March 2001, a non-type approved sports catalytic converter may be fitted, provided it offers comparable performance to the original and the vehicle continues to meet the applicable emissions standards for its age. The vehicle must still pass an MOT test.

If you are located outside the UK, please check your local laws and regulations to ensure compliance.



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

FSPOR9912GT2RSCB
9P1254400B
9P1254400E
9P1254450B
9P1254450E

The product you are viewing cross references to these numbers
DISPLAYING 1 to 16 (of 36 products)
1 2 3
Also found on these pages
About Catalyst / Bypass

Exhaust Catalytic Converters & Bypass Pipes – Performance, Efficiency & Flow Control

The catalytic converter plays a crucial role in your Porsche’s exhaust system, reducing harmful emissions while maintaining optimal exhaust flow. Positioned between the exhaust manifold and silencer, it converts toxic gases such as carbon monoxide, hydrocarbons, and nitrogen oxides into less harmful emissions before they exit the tailpipe.

At Design911, we offer a complete range of catalytic converters and bypass pipes for Porsche vehicles. Our manufacturer-quality converters ensure reliable emission control and long-term performance, while our bypass options are designed for track or performance use, optimising exhaust flow for maximum power and throttle response.

Whether you’re maintaining your Porsche to meet emissions standards or upgrading for improved exhaust performance, our selection includes both direct-fit converters and performance bypass kits built from high-grade stainless steel for strength, corrosion resistance, and durability.

What Do Catalytic Converters & Bypass Pipes Do?

A catalytic converter uses a fine mesh of precious metals to trigger chemical reactions that break down pollutants. The bypass alternative eliminates restriction in the exhaust flow, improving performance in non-emissions-controlled environments such as track driving.

Core Functions:

  • Converts toxic exhaust gases into environmentally friendly emissions.
  • Maintains exhaust back pressure for engine efficiency.
  • Reduces harmful NOx, CO, and HC emissions.
  • Supports smoother engine performance and throttle control.
  • Bypass versions enhance exhaust flow and improve power output for track cars.

Upgrading to a performance-grade system ensures your Porsche continues to meet emission requirements — or achieves greater flow and responsiveness for motorsport applications.

Why Do Catalytic Converters Fail?

Catalytic converters are exposed to extreme heat, unburnt fuel, and contaminants — all of which can degrade their performance over time.

Common Causes of Failure Include:

  • Carbon or oil buildup blocking the internal honeycomb.
  • Thermal damage from overheating or rich fuel mixtures.
  • Physical damage from road debris or misfiring engines.
  • Corrosion due to moisture and exhaust condensation.
  • Age-related wear reducing catalytic efficiency.

A failing converter can cause reduced engine power, poor fuel economy, rattling sounds, or a check-engine light. Replacing it restores emissions compliance, performance, and exhaust efficiency.

Why Replace or Upgrade with Precision-Engineered Components?

Replacing a failing converter or upgrading to a bypass pipe ensures your Porsche maintains peak performance and reliability.

Key Benefits:

  • Restores optimal emissions performance and efficiency.
  • Improves exhaust flow and throttle response.
  • Reduces engine stress and fuel consumption.
  • Durable stainless-steel construction for longevity.
  • Direct-fit compatibility for Porsche 911, Cayman, Boxster, Panamera, Macan and more.
  • Performance bypass options available for track and tuning applications.

Whether you want emissions compliance or maximum flow for competition use, our parts deliver reliability, precision, and performance.

Highlights:

  • Direct-fit catalytic converters and bypass pipes for Porsche models.
  • Precision-engineered for optimal flow and reduced emissions.
  • Built from heat-resistant stainless steel for durability.
  • Bypass pipes for performance tuning and track applications.
  • Restores power, efficiency, and exhaust sound balance.
  • Available for classic and modern Porsche vehicles.

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