Fabspeed Exhaust

Fabspeed's Muffler Bypass Pipes for the Porsche 996 GT3 replace the heavy and restrictive factory muffler assembly saving 50 lbs from the rear of the car.

Lighten the rear of the vehicle while adding aggressive Supercup-style sound by replacing the heavy factory mufflers with straight-through tubes.

FEATURES:

• Fits all Porsche 996 GT3 vehicles (1999-2005)
• Increases horsepower and torque by 11 whp and 7 ft-lbs for improved throttle response
• Saves 50lbs 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; no cutting or welding required
• 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.

Fabspeed Center Outlet Conversion Tips.
The Fabspeed Porsche 996/997.1 Carrera GT3 Center Outlet Conversion Tips are a specialist exhaust conversion designed to give compatible Porsche 911 Carrera models the distinctive centre-exit exhaust appearance associated with the GT3.

Fits:

• Porsche 996 GT3 MKI 1999-02
• Porsche 996 GT3 MKII 2003>>
• Porsche 997 MK1 GT3 / GT3 RS 2007-09  

Designed for vehicles fitted with a GT3-style rear bumper featuring a centre exhaust opening, the conversion uses extended exhaust outlets to redirect the tailpipes from the Carrera's conventional exhaust location towards the centre of the rear bumper.

The system retains the original side-mounted muffler layout while changing the location of the visible exhaust outlets, providing a motorsport-inspired appearance without requiring the exhaust mufflers themselves to be relocated.

Manufactured from 14–16 gauge T304 stainless steel, the conversion tips are designed for straightforward bolt-on installation without cutting or welding.

What This Product Does:

• The Fabspeed conversion tips change the location at which the Carrera's exhaust outlets appear at the rear of the vehicle.
• A standard Carrera uses exhaust outlets positioned towards the outer sections of the rear bumper.
• When a GT3-style bumper with a centre exhaust opening is installed, the standard exhaust outlet position no longer corresponds with the bumper design.
• The Fabspeed conversion system solves this by extending the exhaust outlets towards the centre of the vehicle.
• This allows the exhaust gases to exit through the central opening in the GT3-style rear bumper while retaining the side-mounted muffler arrangement.

GT3-Inspired Centre Exhaust Apperance:
The main purpose of this product is to provide the distinctive centre-exit exhaust configuration associated with Porsche's motorsport-inspired GT3 models.

The conversion provides:

• GT3-inspired centre exhaust styling
• Correct outlet positioning for a GT3-style rear bumper
• A cleaner rear-bumper conversion
• Motorsport-inspired appearance
• Retention of the Carrera side-muffler layout
• A purpose-designed alternative to custom exhaust fabrication

This is primarily an exhaust routing and styling conversion, rather than a conventional performance component intended to create substantial horsepower gains by itself.

Why Install A Centre Outlet Conversion:
This product is primarily intended for owners converting a Carrera to a GT3-style rear bumper and exhaust appearance.

Reasons for installing the system include:

• GT3-inspired styling
• Centre-exit exhaust conversion
• Correct exhaust positioning for a GT3-style bumper
• Avoiding custom exhaust fabrication
• Retaining the existing side-muffler layout
• Choice of exhaust-tip finishes
• Straightforward bolt-on installation

It provides a purpose-designed solution for completing the rear appearance of a GT3-style Carrera conversion.

Fabspeed Competition Muffler Outlets W / Adjustable Turndowns.

The Fabspeed Porsche 996 GT3 Competition Muffler Outlets with Adjustable Turndowns are a specialist exhaust upgrade designed to help Porsche 911 GT3 owners manage exhaust noise at track days, racing events and motorsport venues with strict decibel limits.

Fits:

• Porsche 996 GT3 MKI 1999-02
• Porsche 996 GT3 MKII 2003>>  

Developed for Porsche 996 GT3 models manufactured between 1999 and 2005, these competition exhaust outlets replace the factory exhaust tips with adjustable stainless steel turndowns that allow the direction of exhaust discharge to be changed.

The Porsche 996 GT3 features a naturally aspirated 3.6-litre flat-six engine renowned for its high-revving character and distinctive motorsport-inspired exhaust note.

While this sound is an important part of the GT3 driving experience, high-performance exhaust systems can produce noise levels that exceed the limits imposed by certain racing circuits and track-day organisers.

Many motorsport venues use static or drive-by sound monitoring to ensure that vehicles remain within permitted noise levels. Cars exceeding these limits may be refused access to the circuit or required to stop participating.

Fabspeed developed the Competition Muffler Outlets to provide a practical method of redirecting exhaust noise without requiring the driver to replace the complete exhaust system.

The adjustable turndown design allows the exhaust outlets to be rotated, directing gases and sound downwards or towards another suitable angle rather than straight out of the rear of the vehicle.

This change in direction can alter the way exhaust sound reaches external measurement equipment, potentially reducing measured noise at particular monitoring positions.

Manufactured from T304L stainless steel, the competition outlets are designed to withstand the high temperatures and operating conditions associated with performance exhaust systems.

The product uses a bolt-on installation arrangement, with the required clamps and mounting hardware supplied.

No cutting or welding is required when fitting the outlets to the corresponding Porsche 996 GT3 exhaust arrangement.

Unlike a complete replacement silencer, these outlets do not introduce a new muffler or significant additional sound-absorbing material.

Their primary purpose is to redirect exhaust sound, rather than to substantially reduce the total acoustic energy produced by the engine.

They are particularly useful for Porsche owners who want to retain their existing exhaust system while gaining additional flexibility for track events.

What This Product Does:
The Fabspeed Competition Muffler Outlets replace the original rear exhaust tips with adjustable outlets designed to change the direction of exhaust gas discharge.

Their primary functions include:

• Redirect Exhaust Sound: Change the angle at which exhaust noise leaves the rear of the vehicle.
• Support Track Noise Management: Help reduce sound exposure at particular external measurement positions.
• Provide Adjustable Exhaust Direction: Allow the turndown outlets to be rotated to an appropriate position.
• Direct Exhaust Towards the Ground: Enable downward-facing exhaust discharge where suitable.
• Offer Alternative Outlet Angles: Allow the driver or technician to adjust the orientation according to the intended application.
• Support Motorsport Use: Provide additional flexibility for vehicles attending noise-controlled circuits.
• Replace Factory Exhaust Tips: Fit in place of the original exhaust outlet components.
• Maintain Existing Exhaust Hardware: Work with the corresponding exhaust mounting arrangement without requiring a complete exhaust replacement.
• Provide Durable Stainless Steel Construction: Resist corrosion and withstand normal high-temperature exhaust operation.
• Allow Convenient Adjustment: Use accessible clamping connections to enable outlet repositioning.
• Maintain Application-Specific Fitment: Designed for Porsche 996 GT3 models.
• Avoid Permanent Exhaust Modification: Bolt-on installation requires no cutting or welding.

Symptoms Of Wear Or Failure:
The Fabspeed Competition Muffler Outlets are primarily a motorsport accessory and exhaust upgrade rather than a component that requires replacement at a fixed service interval.

However, the factory exhaust tips or existing outlet hardware may become damaged through age, vibration, corrosion, accidental impact or repeated track use.

Common signs that the existing exhaust outlet arrangement requires attention include:

• Exhaust outlets moving when inspected.
• Metallic rattling from the rear of the vehicle.
• Unevenly positioned exhaust tips.
• Loose mounting clamps.
• Exhaust tips contacting surrounding components.
• Heavy rust around mounting connections.
• Corroded clamps or fasteners.
• Surface deterioration.
• Weak or damaged welds.
• Difficulty removing or adjusting the outlets.
• Visible cracks.
• Deformed or bent outlets.
• Exhaust blowing noises.
• Black soot around damaged connections.
• Unusual vibration from the tailpipe area.

Why Replacement Matters:
Installing Fabspeed Competition Muffler Outlets provides additional control over exhaust discharge direction, making them particularly valuable for Porsche 996 GT3 owners who regularly attend motorsport events.

• Improved Track Noise Management: Adjustable outlet angles may help reduce measured exhaust noise at certain monitoring positions.
• Greater Exhaust Direction Control: Allows the exhaust discharge to be aimed downwards or in another appropriate direction.
• Potentially Wider Track-Day Usability: May help vehicles approach the permitted noise level for certain venues.
• Maintains the Existing Exhaust System: Avoids replacing the entire exhaust solely to change outlet direction.
• Quick Adjustment: Rotatable outlets can be repositioned using their clamp connections.
• High-Quality Stainless Steel: Manufactured from corrosion-resistant T304L stainless steel.
• Motorsport-Focused Design: Developed with noise-controlled performance driving in mind.
• Direct Bolt-On Installation: No permanent cutting or welding required.
• Included Mounting Hardware: Supplied with the required clamps and installation components.
• Maintains Porsche GT3 Character: Retains the existing exhaust system's general sound characteristics while changing their direction.
• Useful for Track-Focused Vehicles: Provides additional flexibility for vehicles used at different circuits.
• Cost-Effective Exhaust Adaptation: Offers an alternative to fitting a different complete exhaust system where outlet redirection is appropriate.
• Fabspeed Motorsport Engineering: Produced by a specialist in performance exhaust systems.
• Lifetime Warranty: Covered by the manufacturer's stated warranty terms.

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FSPOR996GT3CMO

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Fabspeed Link Comp X-Pipe.
The Fabspeed Porsche 996 GT3 Cat Bypass X-Pipe is a high-performance competition exhaust component designed to replace the factory catalytic converters with a freer-flowing X-pipe arrangement.

Fits:

• Porsche 996 GT3 MKI 1999-02
• Porsche 996 GT3 MKII 2003>>  

Developed for track and competition-focused Porsche 996 GT3 applications, the system removes the restrictive catalytic-converter section and provides a more direct route for exhaust gases leaving the engine.

By reducing exhaust restriction and allowing gases from both cylinder banks to merge through the X-pipe, the system is designed to improve exhaust flow, sharpen throttle response, reduce weight and produce a considerably more aggressive GT3 exhaust note.

What This Product Does:
The original catalytic converters form part of the vehicle's emissions-control system.

While catalysts treat exhaust gases, their internal substrates also create resistance to exhaust flow.

The Fabspeed Cat Bypass X-Pipe removes this catalytic restriction and replaces it with freer-flowing exhaust pipework.

The system is designed to:

• Remove the restrictive factory catalytic converters
• Increase exhaust-gas flow
• Reduce exhaust backpressure
• Improve engine breathing
• Improve throttle response
• Increase horsepower and torque potential
• Reduce exhaust-system weight
• Increase exhaust volume
• Produce a more aggressive motorsport-inspired sound

Because the catalytic converters are removed, this is fundamentally different from a Sport Cat system.

X-Pipe Design:
An X-pipe connects the exhaust streams from the two cylinder banks.

Rather than keeping both exhaust paths completely separate, the crossover allows pressure pulses from each bank to interact.

A properly designed X-pipe can help:

• Balance exhaust pulses
• Improve gas-flow transitions
• Reduce turbulence
• Improve exhaust scavenging
• Support high-RPM performance
• Create a smoother, more exotic exhaust tone

This is particularly suited to the naturally aspirated, high-revving flat-six engine used in the 996 GT3.

Maximum Exhaust Flow:
Removing the catalytic substrates eliminates one of the major restrictions in the exhaust system.

This creates a substantially more open exhaust route.

Potential benefits include:

• Reduced exhaust backpressure
• Faster exhaust evacuation
• Improved engine breathing
• Sharper throttle response
• Stronger high-RPM performance
• Increased performance potential

Actual performance depends on the complete vehicle configuration.

Why Upgrading Matters:
The factory catalytic converters do not need to have failed for this component to be installed.

The Cat Bypass X-Pipe is primarily a competition performance upgrade.

Reasons for upgrading include:

• Maximum exhaust-gas flow
• Elimination of catalytic-converter restriction
• Reduced exhaust backpressure
• Improved throttle response potential
• Increased horsepower and torque potential
• Reduced exhaust-system weight
• More aggressive GT3 exhaust sound
• Improved high-RPM exhaust character
• X-pipe crossover design
• Track-focused configuration

It is particularly suited to vehicles where performance and exhaust flow take priority over road-use emissions requirements.

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

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

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

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FSPOR996GT3CBX

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Fabspeed Maxflo Performance Exhaust System.

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FSPOR996GT3MAX

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Fabspeed Sport Cat X-Pipe.
The Fabspeed Porsche 996 GT3 Sport Cat X-Pipe is a high-performance catalytic converter and X-pipe upgrade designed to improve exhaust flow, throttle response, power and exhaust sound while retaining catalytic exhaust treatment.

Fits:

• Porsche 996 GT3 MKI 1999-02
• Porsche 996 GT3 MKII 2003>>  

Replacing the original catalytic-converter section, the system combines 200-cell HJS high-flow Sport Catalytic Converters with a specially designed stainless-steel cast X-pipe featuring a knife-edged internal design. The result is a less restrictive exhaust path that allows gases from the naturally aspirated GT3 flat-six to flow more efficiently through the exhaust system.

Manufactured using mandrel-bent T304L stainless steel, the system is designed as a direct bolt-on performance upgrade requiring no cutting or welding.

Fabspeed reports gains of up to 15 wheel horsepower, together with approximately 14 lb-ft of torque and a 12 lb weight reduction compared with the factory components. Actual results depend on the individual vehicle and testing conditions.

What This Product Does:
The catalytic converters sit within the exhaust system and process exhaust gases before they leave the vehicle.

At the same time, their internal construction creates some resistance to exhaust flow.

A performance Sport Cat system aims to maintain catalytic treatment while reducing unnecessary restriction compared with the original catalytic-converter arrangement.

The Fabspeed Sport Cat X-Pipe is designed to:

• Improve exhaust-gas flow
• Reduce exhaust restriction
• Improve throttle response
• Increase horsepower and torque potential
• Reduce exhaust-system weight
• Produce a more defined GT3 exhaust note
• Provide a mild increase in exhaust volume
• Retain catalytic exhaust treatment
• Improve exhaust flow between the two cylinder banks

Manufacturer Report Performance:
Fabspeed reports curve gains of up to approximately:

Power: +15 WHP
Torque: +14 lb-ft
Weight Reduction: Approx. 12 lb

These are manufacturer-reported figures and should not be interpreted as guaranteed gains for every vehicle.

Actual performance can vary according to:

• Engine condition
• Existing exhaust configuration
• Headers
• Rear muffler system
• Intake modifications
• Engine calibration
• Fuel quality
• Ambient conditions
• Vehicle specification
• Dyno equipment and testing procedure

Why Upgrading Matters:
The factory catalytic converters do not need to have failed for this system to be installed.

The Fabspeed Sport Cat X-Pipe is primarily a performance upgrade designed for drivers seeking improved exhaust flow without moving to a completely catless exhaust section.

Reasons for upgrading include:

• 200-cell HJS Sport Catalytic Converters
• Reduced exhaust restriction
• Cast stainless-steel X-pipe
• Knife-edged X-pipe design
• Improved exhaust-gas flow
• Improved throttle response
• Manufacturer-reported gains up to +15 WHP
• Manufacturer-listed +14 lb-ft torque
• Approx. 12 lb weight reduction
• More defined GT3 exhaust sound
• Mild increase in exhaust volume
• T304L stainless-steel construction
• Mandrel-bent tubing
• Direct bolt-on installation
• No cutting or welding required

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FSPOR996GT3SCX

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Fabspeed Sport Headers.
The Fabspeed Porsche 996 GT3 Sport Headers are a high-performance replacement for the factory exhaust headers, designed to improve exhaust flow, optimise exhaust-gas scavenging and enhance the power and sound of the naturally aspirated GT3 flat-six.

Fits:

• Porsche 996 GT3 MKI 1999-02
• Porsche 996 GT3 MKII 2003>>  

Hand-crafted from mandrel-bent T304L stainless steel, the headers use one-piece CNC mandrel-bent primary tubes together with F1-style merge collectors to provide a smoother, freer-flowing route for exhaust gases leaving the cylinder heads.

Fabspeed reports improvements of approximately +20 HP and +18 lb-ft of torque, together with an approximate 5 lb weight reduction. The headers also provide a mild increase in exhaust volume while smoothing and enhancing the distinctive flat-six exhaust note.

What This Product Does:
Exhaust headers collect exhaust gases leaving each cylinder and direct them into the remainder of the exhaust system.

Their design has a significant influence on how efficiently the engine can evacuate spent combustion gases.

The Fabspeed Sport Headers are designed to:

• Increase exhaust-gas flow
• Reduce unnecessary exhaust restriction
• Improve exhaust scavenging
• Improve engine breathing
• Increase horsepower and torque potential
• Support performance throughout the RPM range
• Reduce exhaust-system weight
• Produce a mild increase in exhaust volume
• Enhance and smooth the GT3 flat-six exhaust note

Performance Benefits:
Fabspeed lists manufacturer-reported figures of approximately:

Power: +20 HP
Torque: +18 lb-ft
Weight Reduction: Approx. 5 lb

The manufacturer also states that the headers improve power and torque throughout the RPM range.

These figures should not be interpreted as guaranteed results for every vehicle.

Actual performance can vary according to:

• Engine condition
• Existing exhaust configuration
• Catalytic converter configuration
• Rear exhaust system
• Intake modifications
• Engine calibration
• Fuel quality
• Ambient temperature
• Vehicle specification
• Dyno equipment and testing procedure

Why Upgrading Matters:
The original headers do not need to be worn or damaged for these Sport Headers to be installed.

They are primarily a performance upgrade for drivers looking to improve exhaust flow and enhance the GT3's naturally aspirated character.

Reasons for upgrading include:

• Increased exhaust flow
• Optimised exhaust scavenging
• One-piece CNC mandrel-bent primary tubes
• F1-style merge collectors
• T304L stainless-steel construction
• Improved power and torque potential
• Manufacturer-reported +20 HP
• Manufacturer-reported +18 lb-ft
• Approx. 5 lb weight reduction
• Improved performance throughout the RPM range
• Mild increase in exhaust volume
• Enhanced flat-six exhaust note
• Bolt-on installation
• No cutting or welding required

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FSPOR996GT3SHDR

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Fabspeed Supercup Exhaust System.
The Fabspeed Porsche 996 GT3 Supercup Exhaust System is a lightweight, straight-through performance exhaust designed for drivers seeking maximum exhaust flow, reduced backpressure and an extremely aggressive motorsport-inspired sound from the naturally aspirated 996 GT3 flat-six.

Fits:

• Porsche 996 GT3 MKI 1999-02
• Porsche 996 GT3 MKII 2003>>  

Developed with track use in mind, the Supercup system replaces the more restrictive factory rear exhaust arrangement with freer-flowing 2.25-inch CNC mandrel-bent T304L stainless-steel tubing. The straight-through configuration dramatically reduces restriction while allowing the distinctive GT3 flat-six exhaust note to become considerably more pronounced.

Fabspeed reports gains of approximately +20 HP and +17 lb-ft of torque, together with an approximate 10 lb reduction in weight. Actual results will depend on the individual vehicle, exhaust configuration and operating conditions.

What This Product Does:
The exhaust system carries combustion gases away from the engine while influencing exhaust restriction, engine breathing, sound and overall performance.

The factory system must balance performance with road-car requirements for noise, refinement and comfort.

The Fabspeed Supercup system takes a much more performance-focused approach.

Its straight-through design is intended to:

• Dramatically reduce exhaust backpressure
• Improve exhaust-gas flow
• Improve engine breathing
• Increase horsepower and torque potential
• Reduce exhaust-system weight
• Produce a significantly louder exhaust note
• Emphasise the naturally aspirated flat-six sound
• Provide a more motorsport-oriented driving experience

Straight Through Supercup Design:

• The defining feature of this system is its straight-through exhaust configuration.
• Rather than prioritising maximum sound suppression, the Supercup system provides a freer route for exhaust gases leaving the engine.
• Reduced restriction can help exhaust gases leave the engine more efficiently, particularly at higher engine speeds where gas volume increases substantially.
• This makes the system particularly appropriate for performance and track-focused 996 GT3 applications.

Manufacturer Reported Performance:
Fabspeed lists performance figures of approximately:

Power: +20 HP
Torque: +17 lb-ft
Weight Reduction: Approx. 10 lb

These figures are manufacturer-reported and should not be considered guaranteed gains for every vehicle.

Actual performance can vary according to:

• Engine condition
• Existing exhaust configuration
• Catalytic converter configuration
• Intake modifications
• Engine calibration
• Fuel quality
• Ambient conditions
• Vehicle specification
• Testing equipment and procedure

Why Upgrading Matters:
The factory exhaust does not need to be worn or faulty for this system to be installed.

The Supercup is primarily a performance and motorsport-style upgrade.

Reasons for upgrading include:

• Dramatically reduced exhaust backpressure
• Improved exhaust flow
• Straight-through performance design
• Manufacturer-reported +20 HP
• Manufacturer-reported +17 lb-ft
• Approx. 10 lb weight reduction
• Extremely aggressive GT3 exhaust sound
• Enhanced high-RPM flat-six character
• 2.25-inch mandrel-bent tubing
• T304L stainless-steel construction
• Compatibility with several catalyst configurations
• Bolt-on installation
• No cutting or welding required

Related reference numbers
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FSPOR996GT3SCUP

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