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All Silencers / Mufflers
Race cup pipe 2 part designed to replace the pre-silencer silencer box. The Cup pipe allows fast air flow and weight saving which together produces more BHP. Made from High grade T304 stainless steel.
The race pipe also changes the sound to a deeper sound, this design of race pipe was originally first fitted to the 964RS.
Made by DesignTek
Fits:
Porsche 964 C2 / C4 1990-94
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
3606006404
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
Made by DesignTek
Fits:
Porsche 964 C2 / C4 1990-94
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
3606009401
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
Fits:
Porsche 964 C2/C4 3.6 12/88-06/94
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
1620606200
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
With TÜV/EEC approval
Fits:
Porsche 964 C2/C4 3.6L 12/88-06/94
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
1620612500
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 914 (1970-1976)
Race cup pipe 2 part designed to replace the pre-silencer silencer box. The Cup pipe allows fast air flow and weight saving which together produces more BHP. Made from High grade T304 stainless steel.
The race pipe also changes the sound to a deeper sound, this design of race pipe was originally first fitted to the 964RS.
Fits:
Porsche 964 C2 / C4 1990-94
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
3606006403
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
Fits:
Porsche 911 Carrera 2 (1990 - 1994)
Porsche 911 Carrera 4 (1989 - 1994)
Porsche 911 RS 3.6L (1992 - 1992)
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96411104504
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
Made of stainless steel, tail pipes of polished stainless steel
Fits:
Porsche 964 C2/C4 3.6 12/88-06/94
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
1620614900
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
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
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
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
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
The Fabspeed Porsche 964 Carrera Secondary Muffler Bypass Pipe is a performance exhaust upgrade designed to improve exhaust flow, reduce rear-end weight and deliver a more aggressive air-cooled flat-six exhaust note on Porsche 911 Carrera (964) models manufactured between 1989 and 1994.
Fits:
- Porsche 964 (911) C2 1989-94
- Porsche 964 (911) C4 1989-94
- Porsche 964 (911) RS 3.6L 1991-94
- Porsche 964 (911) RS 3.8L 1991-94
Developed as a replacement for the original right-hand secondary muffler, this straight-through exhaust pipe eliminates the bulky factory silencer and provides a more direct route for exhaust gases to exit the vehicle.
The Porsche 964 Carrera is powered by an air-cooled flat-six engine renowned for its distinctive mechanical character and engaging driving experience. However, its original exhaust system was designed to balance engine performance with noise reduction and everyday refinement.
The factory secondary muffler plays an important role in reducing exhaust sound before the gases exit through the rear tailpipe. While effective at controlling noise, its internal silencing arrangement also adds weight and may contribute to exhaust flow restriction.
Fabspeed developed this bypass pipe as a lightweight alternative inspired by the exhaust arrangements used on Porsche Motorsport's 964 Carrera Cup racing cars.
Manufactured from high-quality T304L stainless steel, the pipe features a full 3-inch (76 mm) diameter, CNC mandrel-bent construction and precisely TIG-welded joints.
The straight-through configuration reduces the restriction associated with the factory secondary muffler, allowing the engine's exhaust note to become more prominent.
Replacing the heavy original right-hand muffler also removes weight from the rear corner of the vehicle, potentially benefiting weight distribution and reducing the mass carried behind the rear axle.
Fabspeed advertises a weight saving of approximately 25 lbs (11.4 kg), although its product specifications also contain a different weight figure. The precise saving should therefore be confirmed for the vehicle and component configuration.
The bypass pipe is designed to work with compatible Porsche 964-style original equipment rear exhaust arrangements and retains the existing catalytic converter where fitted.
What This Product Does:
The Fabspeed Secondary Muffler Bypass Pipe replaces the original right-hand rear silencer with a straight-through stainless steel exhaust section.
Its primary functions include:
- Bypasses the Factory Secondary Muffler: Eliminates the original right-hand rear silencer from the exhaust path.
- Improves Exhaust Flow: Provides a less restrictive route for exhaust gases through the rear exhaust section.
- Enhances Exhaust Sound: Produces a louder, sportier air-cooled flat-six exhaust note.
- Reduces Rear-End Weight: Removes the mass of the factory secondary muffler from the right-hand rear corner.
- Supports Engine Response: Reduced exhaust restriction may improve throttle response under suitable operating conditions.
- Maintains the Original Catalytic Converter: Replaces a downstream muffler rather than the factory emissions-control catalyst.
- Preserves Compatible Factory Connections: Uses the corresponding original Porsche mounting and sealing arrangement.
- Accommodates Original Exhaust Tips: Allows the factory right-hand tailpipe outlet to be retained.
- Supports Motorsport-Inspired Builds: Recreates the general concept of a Porsche Carrera Cup-style rear muffler bypass.
- Provides Durable Stainless Steel Construction: T304L stainless steel helps resist corrosion and prolonged exhaust heat exposure.
- Maintains Smooth Pipe Geometry: CNC mandrel bending helps preserve internal pipe diameter through bends.
- Allows Reversible Modification: The factory secondary muffler can be refitted if the original components and mounting hardware remain available.
Symptoms Of Wear Or Failure:
The Fabspeed Secondary Muffler Bypass Pipe is primarily a performance upgrade rather than a component that requires replacement at a fixed service interval.
However, a damaged or deteriorating factory secondary muffler may need repair or replacement.
Typical symptoms:
- Ticking, hissing or blowing noises.
- Unusual increases in exhaust volume.
- Black soot deposits around pipe connections.
- Exhaust odours around the rear of the vehicle.
- Noise that becomes more noticeable under acceleration.
- Heavy corrosion on the muffler housing.
- Rust around welded seams.
- Perforations or holes.
- Flaking or weakened metal.
- Damaged exhaust connection surfaces.
Why Replacement / Upgrading Matters:
The Fabspeed Secondary Muffler Bypass Pipe offers a practical performance upgrade for Porsche 964 Carrera owners seeking reduced exhaust weight, less restrictive gas flow and a stronger flat-six soundtrack.
- Reduced Rear Weight: Replaces the heavy factory secondary muffler with lighter stainless steel pipework.
- More Aggressive Exhaust Sound: Enhances the character of the air-cooled Porsche engine.
- Improved Exhaust Flow: Removes the internal restrictions of the right-hand secondary silencer.
- Potentially Better Throttle Response: Reduced exhaust restriction may support quicker engine response.
- Motorsport-Inspired Design: Based on the secondary muffler bypass concept used on Porsche 964 Carrera Cup cars.
- 3-Inch Exhaust Diameter: Provides a direct-flow exhaust passage.
- T304L Stainless Steel: Offers corrosion resistance and high-temperature durability.
- CNC Mandrel-Bent Construction: Maintains consistent internal pipe dimensions.
- TIG-Welded Connections: Provides durable welded joints.
- Compatible with Factory Hardware: Reuses original Porsche clamps and sealing rings.
- Factory Tailpipe Compatibility: Allows the original right-hand exhaust tip to be retained.
- Optional Fabspeed Outlet Tip: Can be paired with a compatible 4.5-inch oval tip.
- Retains Catalytic Converter: Does not remove the factory catalyst when installed on the specified exhaust system.
- Reversible Installation: Allows refitting of the original secondary muffler.
- Fabspeed Lifetime Warranty: Covered by the manufacturer's stated warranty conditions.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
FSPOR964SMB
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
Fits: all Porsche 964 C2, C4, RS America, Euro RS and Speedster vehicles 1989-1994
964 RSR style headers equal length 1 piece C.N.C. mandrel bent primary tubes 26.5" with F1 NASCAR style high velocity merge collectors. MAXFLO headers also come with a dual inlet dual outlet muffler system. NOT available single outlet. System also comes with RSR muffler bypass pipes/ race straight pipe outlets so you can run open headers.
This system saves 43.1lbs/19.5kg from the rear of the vehicle with the heat option and saves 47.5lbs/21.6kg with the headers without heat.
This is with out a doubt the best high performance street, race, and DE exhaust systems that covers all bases for any 911, 964, and 993 cars.
100% T304 stainless steel that is ULTRA strong and Maxflo for maximum power and throttle response. Included are all brackets, hardware and everything for complete installation on any 911, 964 or 993 street and or race car.
** This system does not provide the same amount of heat as the factory heat exchangers, even though it is the "with heat" version.
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.
FSPOR964RSRWH
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
Fits: all Porsche 964 C2, C4, RS America, Euro RS and Speedster vehicles 1989-1994
964 RSR style headers equal length 1 piece C.N.C. mandrel bent primary tubes 26.5" with F1 NASCAR style high velocity merge collectors. MAXFLO headers also come with a dual inlet dual outlet muffler system. NOT available single outlet. System also comes with RSR muffler bypass pipes/ race straight pipe outlets so you can run open headers.
This system saves 43.1lbs/19.5kg from the rear of the vehicle with the heat option and saves 47.5lbs/21.6kg with the headers without heat.
This is with out a doubt the best high performance street, race, and DE exhaust systems that covers all bases for any 911, 964, and 993 cars.
100% T304 stainless steel that is ULTRA strong and Maxflo for maximum power and throttle response. Included are all brackets, hardware and everything for complete installation on any 911, 964 or 993 street and or race car.
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.
FSPOR964RSRWOH
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
Specially produced for use with 964 twin outlet exhaust system.
Fits:
Porsche 964 1989-94 (not Turbo)
Material:
Made from Fibre Glass GRP
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96450516399
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
Fits:
Porsche 964 Carrera 2 (1990 - 1994)
Porsche 964 Carrera 4 (1989 - 1994)
Porsche 964 RS (1992 - 1992)
Porsche 964 Turbo (1991 - 1994)
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
Fits:
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
Please note: This is a special-order item manufactured to order. In some cases, please allow 10 – 14 days 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.
360600010
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
Fits:
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
Please note: This is a special-order item manufactured to order. In some cases, please allow 10 – 14 days 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.
360600010
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
Standard Exhaust Systems – Engineered for Performance, Sound & Longevity
A standard exhaust system is essential for your Porsche’s performance, efficiency, and sound. It controls the flow of exhaust gases from the engine, reduces emissions, manages noise levels, and ensures balanced back pressure for optimal power delivery.
At Design911, we supply standard exhaust systems built from high-grade stainless steel and corrosion-resistant materials. Designed to meet or exceed manufacturer performance standards, these systems deliver the perfect blend of durability, refinement, and performance — ideal for both daily driving and restoration projects.
Each exhaust system is developed to ensure precise fitment, excellent gas flow, and an authentic Porsche exhaust note that retains the car’s original character.
What Do Standard Exhaust Systems Do?
A standard exhaust system performs several vital roles that keep your Porsche running efficiently, cleanly, and safely.
Core Functions:
- Directs
exhaust gases safely away from the engine.
- Reduces
emissions through catalytic converters and silencers.
- Controls
back pressure for balanced performance and fuel efficiency.
- Minimises
engine noise while preserving Porsche’s signature tone.
- Aids temperature regulation and exhaust scavenging.
A properly maintained exhaust system ensures smooth performance, reduced fuel consumption, and compliance with emissions regulations.
Why Do Exhaust Systems Fail?
Exhaust systems are constantly exposed to heat, moisture, and corrosive gases — all of which take a toll over time.
Common Causes of Failure Include:
- Corrosion
and rust from road salt, condensation, and moisture.
- Cracked
welds or pipes due to vibration and thermal cycling.
- Internal
baffle damage causing rattling or loss of silencing effect.
- Blocked
or leaking joints leading to reduced performance and increased noise.
- Burnt-out catalytic converters or mufflers reducing efficiency.
Signs of exhaust failure include loud noises, rattling,
exhaust odours, or reduced engine performance — all clear indicators that
replacement is required.
Why Replace Standard Exhaust Components?
Replacing a worn or damaged exhaust system restores performance, comfort, and efficiency while maintaining your Porsche’s distinctive exhaust tone.
Key Benefits:
- Restores proper exhaust flow and back pressure.
- Improves fuel efficiency and power output.
- Reduces noise and vibration.
- Ensures emissions compliance and MOT readiness.
- Built from corrosion-resistant stainless steel for longevity.
- Direct-fit compatibility for classic and modern Porsche models.
Upgrading to a high-quality standard exhaust preserves the car’s original performance characteristics while ensuring long-lasting reliability.
Highlights:
- Precision-engineered exhaust systems for Porsche vehicles.
- Optimised gas flow for power, torque, and efficiency.
- Durable stainless-steel construction for corrosion resistance.
- Designed for authentic tone and perfect fitment.
- Suitable for classic restoration and modern maintenance.
- Reliable, quiet, and performance-balanced solutions.