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Catalyst / Bypass

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DISPLAYING 1 to 13 (of 13 products)
Best Product
EXHAUSTKIT29
Product Information
Product Information
Sports Exhaust VALVETROINC + catalytic converter bypass X-Pipes Package

designtek

DesignTek Valvetronic sports exhaust system gives smooth and high torque feel to the wheels with the valves opened, Made from high quality 14-16 gauge T304 stainless steel, hydro-formed muffler cases, radiuses stressed relieved with 2000 degree ceramic fibre and stainless steel wool packed free flow mufflers. If you have a factory Porsche PSE (Porsche sport exhaust) this system can replace the original exhaust boxes, you will be able to use the original switches in your car

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.

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EXHAUSTKIT29
3606109976
3606009716

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EXHAUSTKIT93
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Product Information
Sports Exhaust Package 1 (+18 to 27 bhp)

designtek

DesignTek 997 Stage 1 Performance package. High Grade stainless steel exhaust system for Porsche 997 Carrera & S 2005>> MK1. 14 - 16 gauge T304 stainless steel.

Includes sports mufflers, Equal length headers, 200 cell sports cats.

Please note: if you have the 3.6 lire engine, you will need to purchase tail pipes #3606409703 as well.

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Related, superseded, cross reference or alternative numbers for comparison.

EXHAUSTKIT93
99711110301
99711110401
99711303302
99711303304
99711303305
99711303306
997113033AX
99711303500
99711303501
99711303504
99711303505
997035AX
99711303402
99711303404
99711303405
99711303406
997113034AX
99711303600
99711303601
99711303603
99711303604
99711303605
997113036AX
99711121102
99711121103
99711123103
99711121202
99711121203
99711123202
99711123203

The product you are viewing cross references to these numbers
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FSPOR997CBX
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Product Information
Fabspeed Exhaust Cat bypass X-Pipe.

fabspeed

Dramatically improve mid/high end power by replacing the catalytic converters with a free-flowing x-pipe while adding aggressive sports car sound and throttle response; recommended for track and off-road use only.
Dramatically improve mid/high end power by replacing the catalytic converters with a free-flowing x-pipe while adding aggressive sports car sound and throttle response; recommended for track and off-road use only.

NOTE: The Catbypass X-Pipe provides dramatic power increases in the mid to high end of the RPM range. Street drivers may notice a small torque loss at low RPM's, which is why we recommend the Sportcat X-Pipe for street applications. Please also bear in mind that this system does not include catalytic converters, so the Check Engine will most likely be triggered. This is not an indication of any actual issue with the engine, and does not prevent normal vehicle operation. Optional O2 Spacers are also available to help keep the CEL from being triggered.

FEATURES:
Fits all 997 Carrera vehicles from 2005-2008
• Adds 12 horsepower and 12 ft-lbs of torque for improved throttle response
• Recomended for track and off-road use only
• Designed for maximum power and throttle response
• Adds an aggressive exhaust tone
• Saves 10lbs from the rear of the vehicle
• Used by many Rolex Grand Am race teams as well as PCA/POC and HPDE drivers
• Simple DIY bolt-on installation and removal for vehicles that are used both on and off the track
• All Fabspeed performance products are backed by the Fabspeed Lifetime Limited Warranty
• Optional 02 Spacers available to minimize C.E.L occurrences

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.

FSPOR997CBX
99711303302
99711303304
99711303305
99711303306
997113033AX
99711303500
99711303501
99711303503
99711303504
99711303505
997113035AX
99711303402
99711303404
99711303405
99711303406
997113034AX
99711303600
99711303601
99711303603
99711303604
99711303605
997113036AX

The product you are viewing cross references to these numbers
Best Product
3606209971
Product Information
Product Information
Exhaust Catalytic Converter Bypass Pipes

designtek

DesignTek® Evolution exhausts are built for the "tuners market" high performance modified vehicles. With over 50 years of experience the products are built to the highest technical level by the manufacturing team behind the DesignTek® Evolution range.

This product may trip the engine check light, you will need to either re-map the vehicle so that it is reading the lambda sensors correctly, or fit some extra lambda sensor extensions our part number 00060612300, the product has holes for the lambda sensors. The cat bypass will increase the power delivery also give the car a deeper sporty sound.

Details:
- More power and sportscar sound.
- More power upto +10hp.
- Saves 30lbs 15 KG from rear of your 997.

*A re-map to the ECU may require when fitting these cats.

Fits
Porsche 997 Carrera 3.6L
Porsche 997 Carrera 3.8L

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.

3606209971
99711303302
997113033AX
99711303304
99711303305
99711303306
99711303500
997113035AX
99711303501
99711303503
99711303504
99711303505
99711303402
997113034AX
99711303404
99711303405
99711303406
99711303600
997113036AX
99711303601
99711303603
99711303604
99711303605

The product you are viewing cross references to these numbers
Best Product
3606109976
Product Information
Product Information
A Voucher for £100 available when you buy this product. For more information CLICK HERE

Exhaust catalytic converter bypass X-Pipes with cat cheats. This cat bypass would not bring the engine light on but will fail any exhaust emission test.
Please note this is a catalytic converter look exhaust that is in fact bypass with built in small chamber that has got catalyst inside it. The emissions will be picked up from the chamber and readings would be as from regular catalyst.


designtek

Fits:

Porsche 997 Carrera 2 3.6L 2005>>

Porsche 997 Carrera 2S 3.8L 2005>>

Porsche 997 Carrera 4 3.6L 2005>>

Porsche 997 Carrera 4S 3.8L 2005>>

DesignTek sports racing catalytic converters give a HORSEPOWER and TORQUE gain to all 997 cars. High Quality T304 SS C.N.C. mandrel bent tubing for maximum exhaust flow.

DesignTek sports racing catalytic converters for less restriction and more power and more sports car sound. Simple bolt-on direct replacement sports cats for the factory OEM Porsche catalytic converters.


Fits:
Porsche 997 Carrera 3.6L / 3.8L

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.

*Not compatible with GT3 style centre exit tailpipe conversion Part number: 3606609701 

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.

3606109976
99711303302
997113033AX
99711303306
99711303305
99711303500
997113035AX
99711303501
99711303503
99711303504
99711303505
99711303402
99711303404
99711303405
99711303406
997113034AX
99711303600
99711303601
99711303603
99711303604
99711303605
997113036AX

The product you are viewing cross references to these numbers
Special Offer
997PO97270S
Product Information
Product Information
Exhaust Catalytic Converter Pipes 200 cell tricat, Stainless Steel.

danskmotorsport

Fits:
Porsche 997 3.6L C2 / C4 2005-2008
Porsche 997 3.8L C2S / C4S 2005-2008

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.

997PO97270S
99711303302
99711303304
99711303305
99711303306
99711303500
99711303501
99711303503
99711303504
99711303505
99711303402
99711303404
99711303405
99711303406
99711303600
99711303601
99711303603
99711303604
99711303605
997113035005

The product you are viewing cross references to these numbers
Best Product
3606109971
Product Information
Product Information
designtek

Exhaust Sports 200 Cell Catalytic Converter Pipes

DesignTek Sport 200 Cell Catalytic Converters for Porsche 997 Models. Gives a power gain of +12 to 15BHP. Made from High grade stainless steel.

Fits:
Porsche 997 Carrera 3.6L
Porsche 997 Carrera S 3.8L

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.

3606109971
3606109971
99711303302
997113033AX
99711303304
99711303305
99711303306
99711303500
997113035AX
99711303501
99711303503
99711303504
99711303505
99711303402
997113034AX
99711303404
99711303405
99711303406
99711303600
997113036AX
99711303601
99711303603
99711303604
99711303605

The product you are viewing cross references to these numbers
Best Product
3606109977
Product Information
Product Information
Exhaust catalytic converters 200 Cell. 2.5" 63mm

designtek

Fits:
Porsche 997.1 Carrera 3.6 / 3.8 2005-08

These are a unique design optimised for sound and power with a larger bore 2.5" allowing greater gas flows.
These 63.5MM larger bore, powerful cats boast a sportier sound than OE and taper down to meet the original 54mm piping, making them an easy fit replacement for OE. The difference in performance is really felt.

The part comes with all joiners and clamps so fitment is a non-issue. The cats used are high quality, German-manufactured 200 Cell 40G loaded cats and the X-Pipe fabrication element is professionally mandrel bent for maximal gains and optimal flow.

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.

3606109977
99711303302
997113033AX
99711303304
99711303305
99711303306
99711303500
997113035AX
99711303501
99711303503
99711303504
99711303505
99711303402
997113034AX
99711303404
99711303405
99711303406
99711303600
997113036AX
99711303601
99711303603
99711303604
99711303605

The product you are viewing cross references to these numbers
Best Product
99711152000/1
Product Information
Product Information
Exhaust sleeve catalytic converter to silencer.
Connecting sleeve from cat to rear silencer.
Price is for each sleeve.

oematch

Fits:
Porsche 996 1998-05 (not Turbo and GT2)

Porsche 997 2005>> (not Turbo and GT2)

Porsche 991 Carrera C2 3.4L (350Bhp)
Porsche 991 Carrera C2S 3.8L (400Bhp)
Porsche 991 Carrera C4 3.4L (350Bhp)
Porsche 991 Carrera C4S 3.8L (400Bhp)
   Fits cars with and without sport exhaust

Click 'Zoom in' for large parts diagram.
Diagram ref no 13



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

99711152000
99711152000
99611122002

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Special Order item
99711152000
Product Information
Product Information
Exhaust sleeve catalytic converter to silencer.
Price is for each sleeve.

porsche

Original Porsche connecting sleeve from cat to rear silencer.

Fits:
Porsche 997 2005>> (not Turbo and GT2)
    Fits cars with and without sport exhaust

Porsche 991 Carrera C2 3.4L (350Bhp)
Porsche 991 Carrera C2S 3.8L (400Bhp)
Porsche 991 Carrera C4 3.4L (350Bhp)
Porsche 991 Carrera C4S 3.8L (400Bhp)

Click 'Zoom in' for large parts diagram.
Diagram ref no 13



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

99711152000
99711152000

The product you are viewing cross references to these numbers
Best Product
99711152000/2
Product Information
Product Information
Titanium (grade 5) Exhaust sleeve catalytic converter to silencer.
Connecting sleeve from cat to rear silencer. Price is for each sleeve.

rohler

Fits:
Porsche 996 1998-05 (not Turbo and GT2)
Porsche 997 2005>> (not Turbo and GT2)
Porsche 991 Carrera C2 3.4L (350Bhp)
Porsche 991 Carrera C2S 3.8L (400Bhp)
Porsche 991 Carrera C4 3.4L (350Bhp)
Porsche 991 Carrera C4S 3.8L (400Bhp)

Fits cars with and without sport exhaust
Grade 5 titanium is resistant to salt water and variety of corrosive media temperatures below 300°C

Click 'Zoom in' for large parts diagram.
Diagram ref no 13



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

99711152000
99711152000

The product you are viewing cross references to these numbers
Best Price
FSPOR997SCX
Product Information
Product Information
Fabspeed Exhaust sport cat x-pipe

fabspeed

Increase horsepower, torque, and sporty exhaust sound by replacing the factory catalytic converters with high-flowing 200-cell HJS Sport Cats

FEATURES:
Fits all Porsche 997 Carrera vehicles (2005-2008)
• Improves horsepower and torque by 18 whp and 22 ft-lbs
• Saves 4 lbs from the rear of the vehicle
• X-pipe design includes integrated 200-cell HJS Sport Catalytic Converters for maximum flow and efficiency
• Constructed from T304L stainless steel tubing, mandrel-bent for accuracy and flow
• All Fabspeed performance products are backed by the Fabspeed Lifetime Limited 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

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.

FSPOR997SCX
99711303302
99711303304
99711303305
99711303306
997113033AX
99711303500
99711303501
99711303503
99711303504
99711303505
997113035AX
99711303402
99711303404
99711303405
99711303406
997113034AX
99711303600
99711303601
99711303603
99711303604
99711303605
997113036AX

The product you are viewing cross references to these numbers
Best Price
100390100392
Product Information
Product Information
Lambda Sensor Blanking Plug and Receiver Socket Set.
In case you need to relocate your existing lambda probe because it's not in the right location. Welding and cutting specialist required.


Fits:
Many Porsche vehicles. Universal kit.

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

100390100392
100390
100392

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DISPLAYING 1 to 13 (of 13 products)
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About Catalyst / Bypass

Title: Porsche Exhaust Catalyst and Bypass Sports Catalyst: Technical Specifications and Benefits

Key Points:

Enhanced Performance: Upgrading your Porsche's exhaust catalyst or opting for a bypass sports catalyst can significantly improve performance by increasing horsepower and torque output. These aftermarket options are designed to optimize exhaust flow, resulting in improved engine efficiency and throttle response.

Enhanced Sound: An original Porsche or aftermarket exhaust catalyst can enhance the auditory experience of your vehicle. They offer a deeper, more aggressive exhaust note, providing a sportier sound that complements the performance-oriented nature of a Porsche.

Compliance with Emissions Standards: When purchasing an exhaust catalyst, it is crucial to consider its compliance with local emissions regulations. Porsche exhaust catalysts are engineered to meet strict emissions standards, ensuring that your vehicle remains environmentally friendly while delivering enhanced performance.

Quality and Durability: Original Porsche exhaust catalysts are manufactured to the highest standards, ensuring exceptional quality and durability. Aftermarket options from reputable brands also offer similar reliability, providing a long-lasting solution for your Porsche's exhaust system.

Easy Installation: Both original Porsche and aftermarket exhaust catalysts are designed to be direct replacements, making installation relatively straightforward. However, it is essential to follow the manufacturer's instructions or seek professional assistance to ensure proper fitment and optimal performance.

At Design911, we understand the importance of finding the correct part for your Porsche and providing the best professional advice. Our dedicated team of experts specializes in Porsche parts and accessories, including exhaust catalysts. With our extensive knowledge and experience, we can assist you in finding the right exhaust catalyst or bypass sports catalyst for your Porsche model, taking into account your specific requirements and local regulations. We are committed to delivering top-quality products and ensuring customer satisfaction. Contact us today for personalized assistance and an enhanced driving experience with your Porsche.

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