Catalyst / Bypass


- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97

Components:
- 100 Cell sport catalyst converters
- Sport silencers
- Tail pipe set
Fits:
Porsche 993 1995-98 (not Turbo)
Fitting kit not included in price and available separately.
Please note: It is illegal to fit this product for road use on type-approved vehicles first used on or after 1/3/2001
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EXHAUSTKIT75
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This kit is comprised of the following items:





- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) TURBO S 1994-97

Fits:
Porsche 993 Turbo 1994-98
Click 'Zoom in' for large parts diagram.
Diagram Ref No 19
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99311324751
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- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) TURBO S 1994-97

Replacement heat sheild left for Cat.
Fits:
Porsche 993 Turbo 1994-98
Diagram Ref No 34





- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) TURBO S 1994-97

Replacement heat sheild right for Cat.
Fits:
Porsche 993 Turbo 1994-98
Diagram Ref No 23




- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
Replacement heat shield for Cat.

Fits:
Porsche 993 C2/4 1994-98 not turbo
Click 'Zoom in' for large parts diagram.
Diagram Ref No 19
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99321121402
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- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97

Standard Replacement Exhaust Catalytic Converter
Approved Petrol Cats made in grade T409 stainless steel.
Fits:
Porsche 993 C2 / C4 / C2S / C4S / RS 1994-98
Fits to BISCHOFF heat exchangers with gasket 93011119206
Our cat is made up of the following components:
- Ceramic monolith of a honeycomb design to allow free air flow and maximum surface area, coated with precious metals to enable the conversion of gasses that pass through it
- Interam matting to hold the monolith in place. The matting expands when exposed to heat to supply the pressure needed to keep the monolith secure
- A grade 409 stainless steel can (or housing) to provide protection and enable the cat to be built into the exhaust system. 409 grade can contain upto 90% iron and will be prone to rust. It still has higher rust-resistant properties than mild steel.
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99311321316
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- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
Fits:
Porsche 993 C2 / C4 / C2S / C4S / RS 1994-98
DesignTek sports catalytic bypass pipes, manufactured from T304 mandrel bent stainless steel. +15 emissions legal horsepower. Simple installation. Cat-back. Sportier/throatier than motor sound packages and other mufflers. Lightweight -saves 27 lbs. over stock therefore better handling. No cracking, splitting or failures like competitors systems! Greatly improved throttle response with lower engine temperature. System works well with all performance improvements.
Fitting this product might not pass a UK MOT approved.
Fits to BISCHOFF heat exchangers with gasket 93011119206 or GILLET heat exchangers with gasket 92811112702
Select below
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.
Please note: It is illegal to fit this product for road use on type-approved vehicles first used on or after 1/3/2001
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360620993
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- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97

Standard Replacement Exhaust Catalytic Converter
Approved Petrol Cats made in grade T409 stainless steel.
Fits:
Porsche 993 C2 / C4 / C2S / C4S / RS 1994-98
Fits GILLET heat exchangers with gasket 92811112702
Our cat is made up of the following components:
- Ceramic monolith of a honeycomb design to allow free air flow and maximum surface area, coated with precious metals to enable the conversion of gasses that pass through it
- Interam matting to hold the monolith in place. The matting expands when exposed to heat to supply the pressure needed to keep the monolith secure
- A grade 409 stainless steel can (or housing) to provide protection and enable the cat to be built into the exhaust system. 409 grade can contain upto 90% iron and will be prone to rust. It still has higher rust-resistant properties than mild steel.
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99311321343
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- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
Polished.
Fits:
Porsche 993 / 993 4S 3.6-3.8 10/1993-09/1997
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.
Please note: It is illegal to fit this product for road use on type-approved vehicles first used on or after 1/3/2001
Related reference numbers
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993PO93260S
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- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) C4S 1994-97

Fits:
Porsche 993 C2 / C4 / C4S with "Bischoff" exhaust system replaces catalytic "Bischoff" converter.
Comes with Lambda sensor hole and plug.
Please note: It is illegal to fit this product for road use on type-approved vehicles first used on or after 1/3/2001
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9930093400S
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- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) C4S 1994-97

Fits:
Porsche 993 C2 / C4 / C4S with "Gillet" exhaust system replaces catalytic "Gillet" converter.
Comes with Lambda sensor hole and plug.
Please note: It is illegal to fit this product for road use on type-approved vehicles first used on or after 1/3/2001
Related reference numbers
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9930093410S
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- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97

Fits : all Porsche 993 Carrera vehicles 1994-1998 - 3.6L / 3.8L and engines
Fabspeed's RSR Header Muffler Kit is a full exhaust system developed for track use provides an aggressive exhaust note while adding horsepower, torque, and throttle response; available as single or dual outlet and with or without heat exchange. Works great on street cars too. This Header/Muffler kit is built from the ground up to optimize performance for the Porsche 993 Carrera. Beyond just improving horsepower, torque, and throttle response, this package will also reduce the overall weight of your car by 43 pounds, which improves handling and acceleration.
SOUND:
This kit is designed specifically for use on the track, but works well for street drivers who want an aggressive and track-inspired exhaust note.
POWER:
We developed every inch of it to bring out the aggressive performance that the Carrera is capable of. On our dyno we saw gains of 29whp and 25ft/lbs of tq.
FEATURES:
• Loud and aggressive cup car sound
• 1.75" / 45mm Header tubes, 26" long
• This system can be ordered with single or double outlets
• Maintain your factory in-cabin heat with the optional heat exchange on the headers
• Saves 43lbs from the rear of the vehicle with heat exchange option, and saves 47lbs without heat exchange option
• Constructed from mandrel bent T304L stainless steel
• Simple DIY bolt-on installation, no cutting or welding required
• All Fabspeed performance products are backed by the Fabspeed Lifetime Warranty
NOTE:
This package can be purchased with a heat exchange on the headers that will help maintain the factory in-cabin heat. Without the exchange system, you'll save an additional 4 lbs, for a total of 47 pounds of weight reduction.
PURCHASE DISCLAIMER: Fabspeed Motorsport does not condone the use of emission defeat devices for any vehicles used on public streets or roadways. Fabspeed Motorsport will not tamper, remove, disable, or bypass emissions equipment on a motor vehicle in accordance with 40 CFR Section 86.1854.12(a)(3), Clean Air Act 40 CFR 1068.101(b). This includes software, known as tunes, that reprogram a motor vehicles electronic control module to alter engine performance and enable the removal of filters, catalysts, and other critical emissions controls.
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.
Please note: It is illegal to fit this product for road use on type-approved vehicles first used on or after 1/3/2001
Related reference numbers
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FSPOR993RSRWH
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- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
Price is for each

Fits:
Porsche 993 turbo - 1994 to 1997
Click 'Zoom in' for large parts diagram.
Diagram ref no 3
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96511120500
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- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) TURBO S 1994-97
High performance free-flowing X-Pipe replaces the heavy and restrictive factory muffler for improved power and sound.

Please note:
This product is currently undergoing a design update and will be available for purchase soon. Please contact us for details.
FEATURES:
• Fits all Porsche 993 Turbo / Turbo S vehicles (1995-1998)
• Improves power and throttle response
• Saves 8 lbs from the rear of the vehicle
• 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 for restrictive factory muffler
• 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.
Please note: It is illegal to fit this product for road use on type-approved vehicles first used on or after 1/3/2001
Related reference numbers
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FSPOR993TSCX
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- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97

Composite gaskets included.
+8HP and significantly more torque.
Saves 11lbs/5kg over stock catalytic converters.
This new modular system includes a 200 cell German imported sport catalytic converter and cat bypass option in one interchangeable system.
993 Sport Catalytic Converter X-Pipe is different for certain years. 1994-1996 1/2 993's and all 993 SUPERCUP cars (1994 to 1997 993CUP) have Bischoff oval 3 bolt flanges. 1996+1998 993's are all Gillett round 3 bolt flanges. YOU MUST CORRECTLY specify flange type when Ordering.
When in doubt go check especially the late 1995 and early 1996 cars as this was a "cross-over year" and flange style changed during the year.
T304 Stainless steel C.N.C mandrel bent with polished show car mirror shine.
Simple and easy Bolt-on and bolt-off when you need to!.
Best PROVEN performance value on the market.
Might require blanking plug (90012300920) and washer (90021901500). Available separately.
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.
Please note: It is illegal to fit this product for road use on type-approved vehicles first used on or after 1/3/2001
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
FSPOR993
The product you are viewing cross references to these numbers





- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97

Composite gaskets included.
+8HP and significantly more torque.
Saves 11lbs/5kg over stock catalytic converters.
This new modular system includes a 200 cell German imported sport catalytic converter and cat bypass option in one interchangeable system.
993 Sport Catalytic Converter X-Pipe is different for certain years. 1994-1996 1/2 993's and all 993 SUPERCUP cars (1994 to 1997 993CUP) have Bischoff oval 3 bolt flanges. 1996+1998 993's are all Gillett round 3 bolt flanges. YOU MUST CORRECTLY specify flange type when Ordering.
When in doubt go check especially the late 1995 and early 1996 cars as this was a "cross-over year" and flange style changed during the year.
T304 Stainless steel C.N.C mandrel bent with polished show car mirror shine.
Simple and easy Bolt-on and bolt-off when you need to!.
Best PROVEN performance value on the market.
Might require blanking plug (90012300920) and washer (90021901500). Available separately.
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.
Please note: It is illegal to fit this product for road use on type-approved vehicles first used on or after 1/3/2001
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
FSPOR993
The product you are viewing cross references to these numbers



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.