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Fabspeed Exhaust
- Porsche 991.2 Carrera 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 2S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Carrera 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Targa 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Targa 4S / GTS 3.0L (420/450 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
- Porsche 991 GT3 Cup 2018-2019
- Porsche 991 GT3 Cup 2018-2019
The Fabspeed Porsche 991 GT3 Cup Sport Headers are a high-performance replacement for the restrictive factory exhaust headers fitted to Porsche 991 GT3 Cup race cars from 2017 onward.
Fits:
- Porsche 991 GT3 Cup 2017-2019
Designed specifically for competition-focused GT3 Cup applications, these headers improve exhaust gas flow and scavenging, helping the naturally aspirated flat-six engine breathe more efficiently throughout the rev range.
The system features one-piece CNC mandrel-bent primary header tubes, a high-velocity motorsport-style merge collector and specially designed inlet flanges. Fabspeed manufactures the system from a combination of T321 and T304 stainless steel for strength, corrosion resistance and durability under extreme exhaust temperatures.
Integrated German-made HJS 200-cell tri-metallic sport catalytic converters provide substantially increased exhaust flow compared with more restrictive factory catalysts while retaining catalytic treatment.
Fabspeed lists a performance gain of up to approximately 15 HP, although actual output will vary according to vehicle specification, setup and operating conditions. The system also removes approximately 1 kg / 2 lb from the rear of the vehicle compared with the factory arrangement.
What This Product Does:
The exhaust headers collect combustion gases as they leave the engine's individual cylinders and direct them into the remainder of the exhaust system.
On a high-revving GT3 Cup engine, efficient exhaust flow is especially important because the engine must move large volumes of exhaust gas at high RPM.
The Fabspeed Sport Headers are designed to:
- Reduce exhaust restriction.
- Improve exhaust gas velocity.
- Improve cylinder scavenging.
- Reduce pumping losses.
- Support stronger high-RPM performance.
- Improve throttle response.
- Increase potential horsepower.
- Maintain efficient exhaust flow during sustained track use.
- Reduce unnecessary weight at the rear of the vehicle.
- Provide high-flow catalytic treatment through HJS sport catalysts.
Symptoms Of Wear Or Failure:
Competition exhaust systems experience extreme temperatures, vibration and repeated thermal cycling.
Possible symptoms of worn or damaged headers include:
- Ticking or tapping noise from the exhaust area.
- Exhaust note becoming louder than normal.
- Exhaust gases leaking near the cylinder heads.
- Soot marks around header flanges.
- Cracks in the header tubing.
- Cracked welds.
- Distorted mounting flanges.
- Loose mounting hardware.
- Failed exhaust gaskets.
- Rattling from the catalytic converter area.
- Reduced throttle response.
- Loss of high-RPM performance.
- Increased exhaust backpressure.
- Engine-management warning lights.
- Catalyst-efficiency fault codes.
- Unusual exhaust smells.
- Excessive heat around nearby components.
Because GT3 Cup vehicles are subjected to sustained competition use, regular inspection of the exhaust system is particularly important.
Why Replacement / Upgrading Matters:
A GT3 Cup engine depends on efficient airflow at both the intake and exhaust sides of the combustion process.
Restrictive, cracked or damaged headers can reduce the efficiency with which exhaust gases leave the engine.
Replacing worn components or upgrading to a higher-flow header system can help restore or improve:
- Exhaust gas flow.
- Cylinder scavenging.
- Engine responsiveness.
- High-RPM power delivery.
- Exhaust sealing.
- Thermal management.
- Competition reliability.
- Overall exhaust-system efficiency.
For a race car, maintaining predictable performance across repeated high-load sessions is especially important.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
FSPOR991CUPSHDR
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 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Targa 4 3.0L (370 Bhp) 2016-19
The Fabspeed Porsche 991.2 Carrera Valved Center Muffler Bypass X-Pipe is a performance exhaust upgrade developed specifically for 2017–2019 Porsche 991.2 Carrera 3.0L twin-turbo models originally equipped without Porsche Sport Exhaust (PSE).
Fits:
- Porsche 991.2 Carrera 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Targa 4 3.0L (370 Bhp) 2016-19
The system replaces the large factory centre muffler section with a freer-flowing valved X-pipe arrangement, giving non-PSE cars the ability to switch between a more restrained exhaust character and a significantly more aggressive sports-car sound.
Manufactured from polished T304L stainless steel, the system uses premium UK-manufactured Helical vacuum-actuated exhaust valves and includes Fabspeed Deluxe Dual Style exhaust tips in a choice of finishes.
Fabspeed currently publishes:
- +17 horsepower
- +23 lb-ft torque
- 10 lb / 4.5 kg weight reduction
For a mechanically healthy vehicle, this product is primarily a sound, performance and weight-reduction upgrade, rather than a maintenance replacement.
What This Product Does:
The factory centre muffler reduces exhaust noise and provides the refinement expected from a standard road car.
The Fabspeed Valved Center Muffler Bypass replaces this restrictive centre section with a freer-flowing X-pipe and controllable exhaust valves.
The system is designed to:
- Increase exhaust flow
- Reduce centre-muffler restriction
- Increase exhaust sound
- Provide two different exhaust sound levels
- Increase horsepower and torque
- Reduce exhaust-system weight
- Enhance turbocharged flat-six character
- Retain the factory catalytic converters
- Maintain a direct bolt-on layout
- Upgrade the visible exhaust outlets with Deluxe Dual Style tips
Symptoms Of Wear Or Failure:
The factory muffler is exposed to substantial heat, moisture, vibration and repeated temperature changes.
Possible symptoms of deterioration include:
- Metallic rattling
- Internal muffler buzzing
- Exhaust blowing
- Hissing noises
- Cracked welds
- Corrosion
- Loose mounting brackets
- Black soot around leaking joints
- Exhaust vibration
- Muffler movement
- Exhaust tips sitting out of alignment
- Unexpected increase in exhaust noise
A metallic noise should be diagnosed carefully because heat shields, clamps or neighbouring exhaust components can cause similar symptoms.
Why Replacement Matters:
If the original centre muffler is physically damaged or leaking, replacement helps restore:
- A sealed exhaust path
- Correct exhaust alignment
- Secure mounting
- Controlled exhaust noise
- Proper clearance from surrounding components
Exhaust leaks can allow hot gases to escape close to heat-sensitive components and can create excessive noise or soot deposits.
However, if the original muffler is still healthy, installing the Fabspeed system is primarily an upgrade for sound, performance, valve control and weight reduction.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
FSPOR9912VLV
The product you are viewing cross references to these numbers
- Porsche 991.2 GT2 RS 3.8L PDK (700 bhp) 2018-19
The Fabspeed Valved Sport Catalytic Converters are a high-performance replacement for the factory catalytic converter assemblies fitted to the Porsche 911 991.2 GT2 RS from 2018 onward.
Fits:
- Porsche 991.2 GT2 RS 3.8L PDK (700 bhp) 2018-19
Designed specifically for the high-output twin-turbocharged GT2 RS, the system replaces the restrictive factory 700-cell ceramic catalytic converters with significantly freer-flowing German HJS 200 CPSI sport catalytic converters.
The reduced catalyst density allows exhaust gases to pass through the system with less restriction, helping reduce backpressure downstream of the turbochargers, improve turbo response and provide a stronger, more aggressive exhaust note.
Unlike a basic high-flow catalyst conversion, the Fabspeed system also retains the car's Porsche Sport Exhaust (PSE) functionality through high-temperature Helical UK exhaust valves.
Fabspeed uses larger exhaust valves than the factory arrangement to increase available exhaust flow when the valves are open while maintaining driver-controlled exhaust operation.
The system is constructed from 14–16 gauge CNC mandrel-bent T304 stainless steel and bolts directly to the original GT2 RS titanium centre muffler.
What This Product Does:
The sport catalytic converter system replaces the original catalytic converter assemblies immediately downstream of the turbochargers.
It is designed to:
- Reduce exhaust restriction.
- Reduce turbocharger outlet backpressure.
- Improve exhaust gas flow.
- Support quicker turbocharger response.
- Improve throttle response.
- Support increased horsepower and torque.
- Produce a stronger GT2 RS exhaust note.
- Retain catalytic exhaust treatment.
- Maintain Porsche Sport Exhaust functionality.
- Replace restrictive, damaged or failed factory catalytic converters.
- Work with the original Porsche titanium centre muffler.
- Provide a direct bolt-on performance upgrade.
Symptoms Of Wear Or Failure:
Possible symptoms of deteriorating catalytic converters include:
- Check Engine Light.
- Catalyst-efficiency fault codes.
- Reduced engine performance.
- Slower turbo response.
- Engine feeling restricted under boost.
- Reduced high-RPM power.
- Excessive exhaust backpressure.
- Metallic rattling from the catalyst.
- Unusual exhaust smell.
- Excessive catalyst temperature.
- Internal catalyst substrate breaking apart.
- Melted or collapsed catalyst material.
- Failed emissions testing where applicable.
Catalyst faults should always be correctly diagnosed because a failed catalyst may be the result of another engine problem rather than the original cause.
Why Replacement / Upgrading Matters:
Replacing restrictive or failed catalytic converters with a properly designed high-flow system can help restore or improve:
- Exhaust gas flow.
- Turbocharger response.
- Throttle response.
- Engine performance.
- High-RPM breathing.
- Exhaust sound.
- Catalyst reliability.
- Porsche Sport Exhaust functionality.
For performance-modified GT2 RS vehicles, reduced catalyst restriction can also provide greater headroom for additional engine tuning.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
FSPOR9912GT2RSSC
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
Optimized design that replaces the heavy and restrictive factory side mufflers for improved exhaust flow, increased sound and weight savings.
Utilizing premium Helical valves along with the addition of O2 bungs, Fabspeed's Side Muffler Bypass Pipes provide the ultimate track solution for the 991.2 GT3 / GT3 RS. When accompanied with our new Long Tube Competition Headers, our Side Muffler Bypass Pipes allow the maximum amount of exhaust flow possible from the 991.2 GT3 / GT3 RS engine.
HELICAL VALVES
We chose to use Helical Valves on our 991.2 GT3 / GT3 RS track exhaust systems for their unprecedented quality - which have been proven by many OEM manufacturers such as McLaren, Ferrari, Lamborghini, and many more. Helical valves are an integral part of our Side Muffler Bypass pipes, opening and closing with precision to control the gas flow and optimizing engine back-pressure for improved performance. Helical's extensive experience in high-volume OEM automotive applications has led to standard features such as an extremely durable pneumatic actuator, precision flat sealing faces inside the valve, stiffening ribs and high-temperature bearings at both ends of the butterfly spindle.
O2 BUNGS
We relocated the O2 bungs from the collector of the headers to the Side Muffler Bypass Pipes in order to maintain factory-like functionality with our Long Tube Competition Headers - allowing them to read all cylinders while maximizing the performance of the collector. This design will replace our existing SMBP's allowing you to upgrade to our Long Tube Race Header design at any time in the future.
FEATURES:
• Fits all Porsche 991.2 GT3 / GT3 RS vehicles (2017+)
• Highest quality Helical valves
• Includes O2 bungs for factory like functionality when paired with Fabspeed Long Tube Competition Race Headers
• Saves 34 lbs from the rear of the vehicle
• Replicates aggressive CUP car sound for the street
14-16ga T304 Stainless Steel construction
• Simple bolt-on installation
• 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.
FSPOR9912GT3SMB
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
Direct replacement for the restrictive OEM headers, offering improved power and throttle response throughout the RPM range.
Why We Choose HJS Catalytic Converters:
HJS German imported catalytic converters are made from some of the highest grade material you can find in a catalytic converter. This yields high performance gains and longevity so it wont deteriorate over time like lower grade catalytic converters. These catalytic converters flow up to 93-95% of a straight pipe in most applications. The benefit is that you get the "straight pipe sound" while still being able to provide enough emissions scrubbing to prevent a check engine light.
FEATURES:
• Fits all Porsche 991.2 GT3 / GT3 RS vehicles 2017+
• Includes German-imported HJS 200-Cell Tri-Metallic Sportcats
• Saves 2 lbs from the rear of the vehicle
• CNC mandrel-bent 1pc primary header tubes
• High-velocity motorsports-style merge collector
• Constructed from T304 Stainless Steel
• All Fabspeed performance products are backed by the Fabspeed Lifetime Limited Warranty
DISCLAIMER: 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
INSTALLATION NOTE: To ensure proper header seal, after initial heat cycle, tighten all exhaust bolts to the OEM torque specs.
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.
FSPOR9912GT3SHDR
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 / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Carrera 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Targa 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Targa 4S / GTS 3.0L (420/450 Bhp) 2016-19
Unmatched versatility with the performance to match; the ultimate Center Muffler exhaust solution for the 991.2 Carrera TT with PSE. Full polished T304L stainless steel, beautifully welded together and finished off with premium tips in your choice of finish to fit the rear bumper of the 991.2 Carrera like a finely tailored suit.
SOUND:
We're proud to offer a premium exhaust solution for the Porsche 991.2 Carrera TT with PSE. Our Valvetronic Exhaust offers two distinct tones depending on valve position: mild and very aggressive throaty sportscar sound. Thanks to our unique design, you can now tear up the back roads while enjoying the high performance sound of a free-flowing exhaust without sacrificing the ability to to push a button and enter your neighborhood after a midnight joyride without being too loud and disturbing the neighbors. The Fabspeed Motorsport 991.2 PSE rear valvetronic X pipe system will put an ear-to-ear smile on an Porsche owners.
FEATURES:
• Fits all Porsche 991.2 Carrera 3.0L Flat-Six Twin Turbo cars 2017-2019 ONLY for cars with PSE• Guaranteed to be ABSOLUTELY the Worlds Very Finest systems for all Porsche 991.2 PSE cars
• Includes Deluxe Dual Style Tips in your choice of Finish. Choose - Carbon Fiber, Polished, Satin Black, Single Wall Brushed.
• Worlds finest tips for your car. Saves 10 lbs/ -4.5 kg) less than the bulky boxy OEM Porsche factory center muffler section.
• Precision hand TIG welded with the highest quality USA materials by skilled craftsman.
• Utilizing the worlds best Helical United Kingdom vacuum actuated exhaust Valves. The exact same imported valves used by Porsche, Ferrari, McLaren, Lamborghini, and Aston Martin.100% Cat back emissions legal performance in all 50 states and worldwide.
• No affect on emissions or warranty as its a "CAT-BACK system". Bolts onto OEM Porsche catalytic converters. Simple direct bolt-on replacement system. You can reuse Porsche factory tips or go with Fabspeed tip options.
• Dramatically enhanced sports car sound while still using the full Porsche PSE function.
• Designed, Engineered, and Dyno proven system using lost wax investment casting, Helical UK England imported super premium vacuum valves, and USA materials.
• Backed by our Lifetime Warranty.
• Get the very best designed and engineered system for your car from Fabspeed.
NOTE: Only compatible with PSE equipped vehicles, Not base exhaust models.
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.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
FSPOR9912PSEVLV
The product you are viewing cross references to these numbers
Fabspeed Exhaust Systems - Precision Performance & Sound Upgrades
Fabspeed Exhaust Systems are premium performance exhaust upgrades engineered to deliver increased power, improved exhaust flow, and a distinctive motorsport-inspired sound. Designed and manufactured with precision engineering and performance testing at their core, Fabspeed exhausts are built to enhance the driving experience of Porsche road and track vehicles alike.
Available from Design911, Porsche Fabspeed exhaust components are crafted using high-quality stainless steel and optimised designs to reduce backpressure, improve throttle response, and unleash a more engaging exhaust tone while maintaining durability and reliability.
What Do Fabspeed Exhaust Systems Do?
Fabspeed exhausts optimise exhaust gas flow and acoustic performance.
Core Functions:
- Reduce exhaust restriction and backpressure.
- Improve throttle response and power delivery.
- Enhance exhaust sound and character.
- Improve engine efficiency and breathing.
- Upgrade exhaust aesthetics and build quality.
A high-flow exhaust system plays a key role in unlocking engine performance.
Why Do Standard Exhaust Systems Fail or Limit Performance?
Factory exhaust systems are designed to prioritise emissions
compliance, cost efficiency, and sound suppression. Over time, they can suffer
from:
- Restrictive internal baffling reducing performance.
- Corrosion from moisture and repeated heat cycles.
- Excessive weight limiting efficiency.
- Muted exhaust sound lacking engagement.
- Reduced compatibility with performance tuning upgrades.
As engines are pushed harder, standard exhausts can become a performance bottleneck.
Why Upgrade to a Fabspeed Exhaust?
Fabspeed exhaust systems are designed for drivers seeking performance-focused enhancements.
Upgrade Benefits:
- Improved exhaust flow for increased performance.
- Sportier, more aggressive exhaust sound.
- Lightweight, durable stainless steel construction.
- Precision-engineered components for perfect fitment.
- Ideal for performance road cars and track applications.
Upgrading to Fabspeed delivers noticeable gains in sound, response, and driving excitement.
Highlights
- Porsche Fabspeed performance exhaust systems
- Improved exhaust flow and throttle response
- Sporty, motorsport-inspired exhaust sound
- High-quality stainless steel construction
- Designed for performance and enthusiast driving
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Standard Silencers / Mufflers
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Sport Silencers / Mufflers
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Switchable Silencers / Mufflers
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All Silencers / Mufflers
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Catalyst / Bypass
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Manifold / Headers
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Exhaust Tail Pipes
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Heat Exchangers
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Exhaust Package
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Exhaust Gaskets
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Exhaust Nuts / Bolts / Studs
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Brackets / Clamps / Straps
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Exhaust Fitting Kits
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Sport Exhaust Vacuum Parts
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Lambda Sensors / Probes
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Lambda Sensor Extensions
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Gas Temperature Sensors
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Remus Exhaust
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Akrapovic Exhaust
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BBi Autosport Exhaust
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Tubi Exhaust
