Catalyst / Bypass
- Porsche 991.2 Carrera 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 2S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Carrera 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 4S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Targa 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Targa 4S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Turbo Coupe 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Coupe 3.8L (580 Bhp) 2016-19
- Porsche 991.2 Turbo Cabriolet 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Cabriolet 3.8L (580 Bhp) 2016-19
- Porsche 991.2 Speedster 4.0L (510Bhp) 2019
- Porsche 991.2 GT3 4.0L (500 Bhp) / GT3 RS 4.0L (520 Bhp) 2017-19
- Porsche 991.2 GT2 RS 3.8L PDK (700 bhp) 2018-19
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Related, superseded, cross reference or alternative numbers for comparison.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
The product you are viewing cross references to these numbers
- Porsche 991.2 Carrera 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 2S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Carrera 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 4S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Targa 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Targa 4S 3.0L (420 Bhp) 2016-19
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
The product you are viewing cross references to these numbers
- Porsche 991.2 Turbo Coupe 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Coupe 3.8L (580 Bhp) 2016-19
- Porsche 991.2 Turbo Cabriolet 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Cabriolet 3.8L (580 Bhp) 2016-19

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
The product you are viewing cross references to these numbers
- Porsche 991.2 GT3 4.0L (500 Bhp) / GT3 RS 4.0L (520 Bhp) 2017-19
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
The product you are viewing cross references to these numbers
- Porsche 991.2 GT3 4.0L (500 Bhp) / GT3 RS 4.0L (520 Bhp) 2017-19

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
The product you are viewing cross references to these numbers
- Porsche 991.2 Carrera 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 2S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Carrera 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 4S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Targa 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Targa 4S 3.0L (420 Bhp) 2016-19

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
The product you are viewing cross references to these numbers
- Porsche 991.2 Carrera 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 2S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Carrera 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 4S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Targa 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Targa 4S 3.0L (420 Bhp) 2016-19

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
The product you are viewing cross references to these numbers
- Porsche 991.1 Turbo 3.8L (520bhp) 2014-16
- Porsche 991.1 Turbo S 3.8L (560Bhp) 2014-16
- Porsche 991.2 Turbo Coupe 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Coupe 3.8L (580 Bhp) 2016-19
- Porsche 991.2 Turbo Cabriolet 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Cabriolet 3.8L (580 Bhp) 2016-19

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
The product you are viewing cross references to these numbers
- Porsche 991.2 Carrera 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 2S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Carrera 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 4S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Targa 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Targa 4S 3.0L (420 Bhp) 2016-19

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
The product you are viewing cross references to these numbers
- Porsche 991.2 Carrera 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 2S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Carrera 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 4S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Targa 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Targa 4S 3.0L (420 Bhp) 2016-19

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
The product you are viewing cross references to these numbers
- Porsche 991.2 Carrera 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 2S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Carrera 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 4S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Targa 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Targa 4S 3.0L (420 Bhp) 2016-19

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
The product you are viewing cross references to these numbers
- Porsche 991.2 Turbo Coupe 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Coupe 3.8L (580 Bhp) 2016-19
- Porsche 991.2 Turbo Cabriolet 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Cabriolet 3.8L (580 Bhp) 2016-19
Porsche 991.2 3.0L cars without switchable exhaust system (PSE)
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.
- Porsche 991.2 Carrera 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 2S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Carrera 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 4S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Targa 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Targa 4S 3.0L (420 Bhp) 2016-19

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
The product you are viewing cross references to these numbers
- Porsche 991.2 Turbo Coupe 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Coupe 3.8L (580 Bhp) 2016-19
- Porsche 991.2 Turbo Cabriolet 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Cabriolet 3.8L (580 Bhp) 2016-19

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
The product you are viewing cross references to these numbers
- Porsche 991.2 Carrera 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 2S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Carrera 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 4S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Targa 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Targa 4S 3.0L (420 Bhp) 2016-19

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
The product you are viewing cross references to these numbers
- Porsche 991.2 Carrera 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 2S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Carrera 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 4S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Targa 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Targa 4S 3.0L (420 Bhp) 2016-19

High quality T304 Stainless steel equal length primary tubes. C.N.C. mandrel bent.
Designed for maximum flow and no restriction.
Reduced back pressure and better scavenging. More torque and horsepower across the RPM band.
Fits:
Porsche 991 GT3 3.8L 476 Bhp 2013 - 2017 (A175 engine)
Porsche 991 GT3 RS 4.0L 507 Bhp 2013 - 2017 (A175 engine)
Porsche 911 R 4.0L 507Bhp 2014-2017 (A176 engine)
Please note: This will not fit cars:
- with engine codes DNSA / DNSB - 4.0L with 520 Bhp
- released after 06/2017 with engine codes DGG / DGGA / DGGB
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.
3606309105
The product you are viewing cross references to these numbers
- Porsche 991.1 R 4.0L (500 Bhp) 2016
- Porsche 991.1 GT3 3.8L (475Bhp) 2014-16
- Porsche 991.1 GT3 RS 4.0L (500Bhp) 2015-16
- Porsche 991.2 GT3 4.0L (500 Bhp) / GT3 RS 4.0L (520 Bhp) 2017-19
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.