Fabspeed Exhaust

Fabspeed Maxflo Exhaust System ( 1in - 1out )

Improved sports car sound; deep and throaty while maintaining street appropriate volume

Features:
• Fits: all Porsche 964 C2, C4, RS America, Euro RS and Speedster vehicles 1989-1994
• Increased throttle response throughout the RPM range with less restrictive mufflers
• Available in either a single or dual outlet configuration
• NOTE: Requires slight modification to the factory rear bumper for proper fitment of the second outlet
• Constructed from high-quality 14-16ga CNC mandrel-bent T304L stainless steel for optimum flow and maximum durability
• Direct bolt-on replacement for the restrictive facotry muffler
• Includes Oval Style Tip(s)
• 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.

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FSPOR964MAXS

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Fabspeed Deluxe Oval Style Right-Side Tip For Stock 964 2ndary Muffler.
The Fabspeed Porsche 964 Carrera Deluxe Oval Style Right-Side Exhaust Tip is a premium stainless-steel replacement and styling upgrade for the factory right-side exhaust outlet.

Fits:

• Porsche 964 (911) C2 1989-94
• Porsche 964 (911) C4 1989-94

Featuring a large 4.5-inch oval outlet, mirror-polished finish and lined-tip construction, it gives the rear of the Porsche 964 a cleaner, sportier and more substantial appearance while retaining an OEM-style fit.

Manufactured from mandrel-bent T304L stainless steel, the tip is designed as a direct bolt-on replacement for the original right-side outlet fitted to the stock 964 secondary rear muffler. It can also be used with a compatible 964 secondary CUP muffler bypass pipe.

What This Product Does:
The exhaust tip forms the visible final outlet of the exhaust system.

Exhaust gases that have passed through the engine, catalytic converter and muffler are discharged to atmosphere through this outlet.

Although an exhaust tip generally has little influence on engine performance by itself, it performs several practical and cosmetic functions.

The Fabspeed Deluxe Oval Tip is designed to:

• Replace the factory right-side exhaust outlet
• Provide a clean and correctly positioned exhaust exit
• Upgrade the rear appearance of the Porsche 964
• Provide a larger, sportier 4.5-inch oval outlet
• Replace a damaged, corroded or deteriorated original tip
• Complement performance exhaust modifications
• Provide durable stainless-steel construction
• Maintain an OEM-style mounting arrangement

4.5 Inch Oval Design:

• The enlarged oval outlet gives the rear of the Porsche 964 a more purposeful appearance while remaining sympathetic to the classic body design.
• Its shape fills the exhaust opening more prominently than the standard outlet and provides a subtle performance-inspired visual upgrade rather than radically altering the character of the vehicle.

Mirror Polished Stainless Steel Finish:
The exhaust tip features a mirror-polished stainless-steel finish.

This creates a high-quality appearance at one of the most visible parts of the exhaust system and complements both standard and modified Porsche 964 vehicles.

Regular cleaning can help remove:

• Exhaust soot
• Carbon deposits
• Road dirt
• Water spotting
• Tar
• Road contamination

Because the component is positioned directly at the exhaust outlet, some discolouration and carbon accumulation are normal during use.

Why Upgrading Matters:
This product does not need to be fitted only when the original tip has failed.

It can also be installed purely as an appearance upgrade.

Reasons for upgrading include:

• Larger 4.5-inch oval outlet
• Sportier rear appearance
• Mirror-polished finish
• T304L stainless-steel construction
• Lined-tip design
• OEM-style precision fitment
• Direct bolt-on installation
• Compatibility with the factory secondary muffler
• Compatibility with suitable secondary CUP muffler bypass systems

It is particularly suited to owners who want to enhance the appearance of their Porsche 964 without making permanent modifications to the rear exhaust system.

Related reference numbers
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FSPOR964SROTP

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Fabspeed European Pre-Muffler Pipe.
The Fabspeed Porsche 964 Carrera European Pre-Muffler / Cat Bypass Pipe is a performance exhaust component designed to replace the factory catalytic converter with a freer-flowing exhaust section for competition and off-road applications.

Fits:

• Porsche 964 (911) C2 1989-94
• Porsche 964 (911) C4 1989-94 

Inspired by the European-style pre-muffler configuration, the pipe reduces the restriction associated with the original catalytic converter while incorporating an internal resonator to help shape the exhaust note.

Manufactured from T304L stainless steel, this lightweight exhaust upgrade is designed to improve exhaust flow, enhance throttle response and produce a stronger, more sporting air-cooled flat-six exhaust character.

Because this component removes the catalytic converter, it is intended for competition and off-road use only where legally permitted.

What This Product Does:
The standard catalytic converter processes exhaust gases to reduce harmful emissions before they leave the vehicle.

For competition applications, the Fabspeed European Pre-Muffler replaces this catalytic converter with a much freer-flowing exhaust path.

Removing the catalyst restriction allows exhaust gases to pass through the system more easily.

The pre-muffler is designed to:

• Reduce exhaust restriction
• Improve exhaust-gas flow
• Improve engine breathing
• Enhance throttle response
• Support improved performance
• Reduce exhaust-system weight
• Produce a stronger exhaust note
• Provide a European-style pre-muffler configuration

European Pre-Muffler Design:

• Rather than using a simple straight catalyst-delete pipe, Fabspeed incorporates an internal resonator into the system.
• This provides a freer-flowing exhaust path while helping control and shape the sound produced by the air-cooled flat-six engine.
• The result is intended to provide a more sporting exhaust character without simply functioning as an unrestricted straight pipe.

Why Upgrading Matters:
The Fabspeed European Pre-Muffler is primarily a performance modification, rather than a routine replacement for a failed catalytic converter.

For a suitable competition or off-road Porsche 964, reasons for upgrading can include:

• Reduced exhaust restriction
• Improved exhaust flow
• Improved throttle response
• Reduced exhaust-system weight
• More pronounced flat-six sound
• European-style pre-muffler configuration
• T304L stainless-steel construction
• Direct bolt-on installation

It can also complement other performance exhaust modifications fitted to the vehicle.

Related reference numbers
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FSPOR964CB

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Fabspeed Primary Muffler Bypass Pipe.
The Fabspeed Porsche 964 Carrera Primary Muffler Bypass Pipe is a performance exhaust upgrade designed to replace the heavy and restrictive factory centre primary muffler with a lightweight, free-flowing Carrera Cup-style straight pipe.

Fits:

• Porsche 964 (911) C2 1989-94
• Porsche 964 (911) C4 1989-94

Inspired by the exhaust arrangement used on Porsche 964 Carrera Cup competition cars, the bypass pipe reduces exhaust restriction, removes substantial weight from the rear of the vehicle and produces a stronger, more aggressive air-cooled flat-six exhaust note.

Unlike a catalytic-converter bypass pipe, this component is installed after the catalytic converter and does not remove the vehicle's catalyst.

What This Product Does:
The standard Porsche 964 exhaust system uses a primary centre muffler to reduce exhaust noise before gases continue towards the secondary rear muffler.

While effective for noise reduction and refinement, the factory primary muffler adds weight and creates additional restriction in the exhaust path.

The Fabspeed Primary Muffler Bypass Pipe replaces this silencer with a freer-flowing straight pipe.

This is designed to:

• Reduce exhaust restriction
• Improve exhaust-gas flow
• Improve throttle response
• Support increased horsepower
• Reduce rear vehicle weight
• Increase exhaust volume
• Enhance the air-cooled flat-six sound
• Create a Carrera Cup-inspired exhaust configuration

Carrera Cup Style Design:

• The bypass pipe is designed as a replica of the type of primary muffler bypass arrangement used in the Porsche Motorsport 964 Carrera Cup racing programme.
• Rather than forcing exhaust gases through the internal chambers of a conventional silencer, the straight-pipe configuration provides a more direct exhaust route.
• This creates a more performance-oriented exhaust system while retaining the vehicle's catalytic converter and secondary rear muffler when used in the standard configuration.

Performance Benefits:
Fabspeed reports approximately:

Crank Horsepower: +12 HP
Wheel Horsepower: +10 WHP
Weight Reduction: Approx. 25 lb

Fabspeed also reports improved throttle response.

These figures are manufacturer-reported results from specific testing and should not be considered guaranteed output for every Porsche 964.

Actual performance can vary depending on:

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

Why Upgrading Matters:
The Fabspeed Primary Muffler Bypass Pipe is primarily a performance, sound and weight-saving upgrade.

The original centre muffler does not need to have failed before the bypass pipe can be installed.

Reasons for upgrading include:

• Approx. 25 lb rear weight reduction
• Reduced exhaust restriction
• Improved exhaust flow
• Improved throttle response
• Increased horsepower potential
• More aggressive flat-six sound
• Carrera Cup-inspired configuration
• T304L stainless-steel construction
• Straightforward bolt-on installation

It provides a useful option for owners who want a noticeably sportier exhaust without deleting the catalytic converter.

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FSPOR964PMB

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Fabspeed RSR Header Muffler Kit, WITH Heat Exchange And Sports Cats.
The Fabspeed Porsche 964 Carrera RSR Header Muffler Kit is a comprehensive performance exhaust system designed to transform the exhaust flow, sound and character of the air-cooled Porsche 964.

Fits:

• Porsche 964 (911) C2 1989-94
• Porsche 964 (911) C4 1989-94

Inspired by Porsche RSR motorsport exhaust architecture, the system replaces key restrictive factory exhaust components with equal-length RSR-style headers, high-velocity 3-into-1 merge collectors and a dual-outlet performance muffler system.

The result is a freer-flowing exhaust path designed to improve engine breathing, increase horsepower and torque potential, reduce weight and deliver a significantly louder and more aggressive air-cooled flat-six exhaust note.

What This Product Does:
The exhaust system has the important job of carrying combustion gases away from the engine while controlling exhaust flow, noise and, depending on the configuration, emissions.

On a performance engine, the design of the headers, collectors and mufflers can significantly influence how efficiently exhaust gases leave the cylinders.

The Fabspeed RSR Header Muffler Kit replaces several major factory exhaust components with a performance-oriented system designed to:

• Improve exhaust-gas flow
• Reduce exhaust restriction
• Improve exhaust scavenging
• Improve engine breathing
• Increase horsepower and torque potential
• Improve throttle response
• Reduce exhaust-system weight
• Produce a louder, more aggressive exhaust note
• Create an RSR-inspired appearance and character

Performance Benefits:
Fabspeed reports substantial performance improvements from the RSR Header Muffler Kit.

The manufacturer's current published figures vary between sections of its product listing, with performance gains quoted in the region of approximately:

Horsepower: +24 to +29 HP
Torque: +21 to +24 ft-lb
Weight Reduction: Up to approximately 38 lb depending on configuration

These figures are manufacturer-reported and should not be interpreted as guaranteed results for every Porsche 964.

Actual results will vary depending on:

• Engine condition
• Vehicle specification
• Exhaust configuration
• Sport Cat or non-Sport Cat configuration
• Intake modifications
• Engine calibration
• Fuel quality
• Ambient conditions
• Testing equipment and procedure

Why Upgrading Matters:
This system is primarily a performance upgrade, rather than a routine replacement component.

The factory exhaust does not need to have failed before the kit can be installed.

Reasons for upgrading include:

• Equal-length RSR-style headers
• High-velocity 3-into-1 merge collectors
• Improved exhaust flow
• Improved exhaust scavenging
• Increased horsepower and torque potential
• Improved throttle response
• Significant weight reduction
• Loud and aggressive flat-six sound
• RSR-inspired appearance
• T304L stainless-steel construction
• Optional heat-exchange configuration
• Optional Sport CatsChoice of exhaust outlets

It is particularly suited to enthusiast, performance and RSR-inspired Porsche 964 builds where increased sound, reduced weight and improved exhaust efficiency are priorities.

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

FSPOR964RSRWH

The product you are viewing cross references to these numbers

Fabspeed RSR Header Muffler Kit, WITHOUT Heat Exchange WITH Sports Cats.
The Fabspeed Porsche 964 Carrera RSR Header Muffler Kit is a comprehensive performance exhaust system designed to transform the exhaust flow, sound and character of the air-cooled Porsche 964.

Fits:

• Porsche 964 (911) C2 1989-94
• Porsche 964 (911) C4 1989-94

Inspired by Porsche RSR motorsport exhaust architecture, the system replaces key restrictive factory exhaust components with equal-length RSR-style headers, high-velocity 3-into-1 merge collectors and a dual-outlet performance muffler system.

The result is a freer-flowing exhaust path designed to improve engine breathing, increase horsepower and torque potential, reduce weight and deliver a significantly louder and more aggressive air-cooled flat-six exhaust note.

What This Product Does:
The exhaust system has the important job of carrying combustion gases away from the engine while controlling exhaust flow, noise and, depending on the configuration, emissions.

On a performance engine, the design of the headers, collectors and mufflers can significantly influence how efficiently exhaust gases leave the cylinders.

The Fabspeed RSR Header Muffler Kit replaces several major factory exhaust components with a performance-oriented system designed to:

• Improve exhaust-gas flow
• Reduce exhaust restriction
• Improve exhaust scavenging
• Improve engine breathing
• Increase horsepower and torque potential
• Improve throttle response
• Reduce exhaust-system weight
• Produce a louder, more aggressive exhaust note
• Create an RSR-inspired appearance and character

Performance Benefits:
Fabspeed reports substantial performance improvements from the RSR Header Muffler Kit.

The manufacturer's current published figures vary between sections of its product listing, with performance gains quoted in the region of approximately:

Horsepower: +24 to +29 HP
Torque: +21 to +24 ft-lb
Weight Reduction: Up to approximately 38 lb depending on configuration

These figures are manufacturer-reported and should not be interpreted as guaranteed results for every Porsche 964.

Actual results will vary depending on:

• Engine condition
• Vehicle specification
• Exhaust configuration
• Sport Cat or non-Sport Cat configuration
• Intake modifications
• Engine calibration
• Fuel quality
• Ambient conditions
• Testing equipment and procedure

Why Upgrading Matters:
This system is primarily a performance upgrade, rather than a routine replacement component.

The factory exhaust does not need to have failed before the kit can be installed.

Reasons for upgrading include:

• Equal-length RSR-style headers
• High-velocity 3-into-1 merge collectors
• Improved exhaust flow
• Improved exhaust scavenging
• Increased horsepower and torque potential
• Improved throttle response
• Significant weight reduction
• Loud and aggressive flat-six sound
• RSR-inspired appearance
• T304L stainless-steel construction
• Optional heat-exchange configuration
• Optional Sport CatsChoice of exhaust outlets

It is particularly suited to enthusiast, performance and RSR-inspired Porsche 964 builds where increased sound, reduced weight and improved exhaust efficiency are priorities.

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

FSPOR964RSRWOH

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Fabspeed Sport Highflow Catalytic Converter.
The Fabspeed Porsche 964 Carrera Sport High-Flow Catalytic Converter is a performance replacement for an ageing, damaged, missing or restrictive factory catalytic converter.

Fits:

• Porsche 964 (911) C2 1989-94
• Porsche 964 (911) C4 1989-94 

Designed to maintain catalytic emissions treatment while providing a freer-flowing exhaust path, the system combines a modern high-flow catalyst with CNC mandrel-bent T304L stainless-steel construction.

Compared with simply removing the catalytic converter, this system provides a performance-oriented solution that retains a functioning catalyst while improving exhaust flow and enhancing the characteristic air-cooled Porsche flat-six exhaust note.

What This Product Does:
A catalytic converter forms part of the vehicle's exhaust and emissions-control system.

Exhaust gases produced during combustion contain pollutants that need to be converted into less harmful compounds before leaving the exhaust.

The catalytic converter performs this emissions-treatment process while allowing exhaust gases to continue towards the rear silencer.

The Fabspeed Sport High-Flow Catalytic Converter performs this fundamental function while using a less restrictive performance-oriented design.

It is designed to provide:

• Catalytic emissions treatment
• Improved exhaust-gas flow
• Reduced exhaust restriction
• Improved engine breathing
• Increased horsepower potential
• Increased torque potential
• Improved throttle response
• Reduced exhaust-system weight
• Enhanced air-cooled flat-six sound

High-Flow Catalyst Design:

• The internal catalyst structure provides a large surface area for the chemical reactions required to process exhaust pollutants.
• A performance catalyst is engineered to achieve this while reducing the restriction placed on exhaust gases.
• This is particularly useful on a performance vehicle, where excessive exhaust backpressure can restrict engine breathing as airflow requirements increase.
• The Fabspeed system therefore provides an alternative to both a restrictive ageing factory catalyst and a catalyst-delete pipe.

Performance Benefits:
Fabspeed reports dyno-tested gains of:

Crank Horsepower: +28 HP
Wheel Horsepower: +24 WHP
Torque: +16 ft-lb
Weight Reduction: Approx. 9 lb

Fabspeed states that the power improvement occurs throughout the RPM range rather than being concentrated solely at maximum engine speed.

These are manufacturer-reported figures from a specific test vehicle and should not be interpreted as guaranteed results for every Porsche 964.

Actual performance can vary according to:

• Engine condition
• Existing exhaust system
• Intake modifications
• ECU calibration
• Fuel quality
• Ambient conditions
• Vehicle specification
• Testing equipment and procedure

Why Upgrading Matters:
The Fabspeed Sport High-Flow Catalytic Converter can also be installed as a performance upgrade even when the original catalyst remains functional.

Potential benefits include:

• Reduced exhaust restriction
• Improved exhaust flow
• Increased horsepower potential
• Increased torque potential
• Improved throttle response
• Reduced exhaust-system weight
• More sporting exhaust sound
• Modern catalyst technology
• Retention of catalytic emissions treatment

This makes it an alternative for owners seeking improved exhaust performance without moving to a catalyst-delete configuration.

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

FSPOR964SC

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