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All Silencers / Mufflers

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DISPLAYING 1 to 13 (of 13 products)
S-PO991TSO-HT
Product Information
Product Information
Akrapovic Slip-On Line Titanium Exhaust System

Fits:
Porsche 991 (911) Turbo/Turbo S 2014>>

The Akrapovič Slip-On Line for the Porsche 911 Turbo / Turbo S is the first stage in the exhaust tuning process and gives this already outstanding car a further step in performance. Made from a high-grade titanium alloy and finished with exquisitely handcrafted carbon fibre and titanium tailpipes, the Slip-On Line reduces weight to aid with handling. Akrapovič's sound engineers have also created a deep and unique sound to make the Porsche 911 Turbo / Turbo S stand out even more. The Slip-On Line can also be used in conjunction with the optional Akrapovič link pipes—with or without cats—which can be added to the system to take the performance to another level. The Slip-On Line is superbly finished with a coating to give greater durability, without altering the look or performance of the system.

TECHNICAL DATA
** measured with: Porsche 911 Turbo/Turbo S (991) 2014

Maximum power:
- kW : plus 5.8 at 3300 rpm
- HP (m) : plus 7.9 at 3300 rpm
- HP (i) : plus 7.8 at 3300 rpm

Maximum torque:
- Nm : plus 14.8 at 2600 rpm
- lb-ft : plus 10.9 at 2600 rpm

Weight:
- minus 6.4 kg / 14.1 lb

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Related, superseded, cross reference or alternative numbers for comparison.

S-PO991TSO-HT
99111173170
99111173171

The product you are viewing cross references to these numbers
3601173170
Product Information
Product Information
A Voucher for £100 available when you buy this product. For more information CLICK HERE

DesignTek Titanium sports exhaust system.

Fits:
Porsche 991.1 Turbo
Porsche 991.2 Turbo

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Related, superseded, cross reference or alternative numbers for comparison.

3601173170
99111173170
99111173171
99111173140

The product you are viewing cross references to these numbers
FSPOR991TSSRX
Product Information
Product Information
Fabspeed Exhaust Supersport RACE X-Pipe Exhaust System (incl. Catbypass).

High performance free-flowing X-pipe with sport catalytic converters and tips replaces the heavy and restrictive factory rear mufflers and catalytic converters for improved power and fantastic sound; includes Cat Bypass and Deluxe Quad-Style Tips.

FEATURES:
• Fits all 991 Turbo / Turbo S vehicles (2013+)
• NOTE: Fabspeed's Supersport X-Pipe RACE application includes cat bypass pipes with O2 bungs in the factory position, and is recommended for Off-Road Track Use Only
• Dramatic improvement in sports car sound and power throughout the RPM range
• Includes Deluxe Quad Style Tips in your choice of finish; also available with polished GT2 Style Tips
• Constructed from high-quality 14-16ga C.N.C. mandrel-bent T304L stainless steel for optimum flow and maximum durability
• Simple 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.

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

FSPOR991TSSRX
99111173170
99111173171

The product you are viewing cross references to these numbers
FSPOR991TSSSX
Product Information
Product Information
Fabspeed Exhaust Supersport STREET X-Pipe Exhaust System (Includes Sport Cats)

High performance free-flowing X-pipe with sport catalytic converters and tips replaces the heavy and restrictive factory rear mufflers and catalytic converters for improved power and fantastic sound; includes 200-cell HJS Sport Cats and Deluxe Quad-Style Tips.

FEATURES:
• Fits all 991 Turbo / Turbo S vehicles (2013+)
• NOTE: Fabspeed's Supersport X-Pipe STREET application includes high performance 200-cell HJS Sport Catalytic Converters for improved flow and exhaust sound
• Dramatic improvement in sports car sound and power throughout the RPM range
• Includes Deluxe Quad Style Tips in Polished Chrome finish; also available with polished GT2 Style Tips
• Constructed from high-quality 14-16ga C.N.C. mandrel-bent T304L stainless steel for optimum flow and maximum durability
• Simple bolt-on installation; no cutting or welding required
• All Fabspeed performance products are backed by the Fabspeed Lifetime Limited Warranty

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 Californi

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.

FSPOR991TSSSX
99111173170
99111173171

The product you are viewing cross references to these numbers
3606009121
Product Information
Product Information
A Voucher for £100 available when you buy this product. For more information CLICK HERE

DesignTek Exhaust VALVETRONIC system with Cat-bypass and Tail pipes. Stainless steel.




Fits:
Porsche 991.1 Turbo

For Wiring Diagram please CLICK HERE

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.

3606009121
3606009121
55-PS124V
98711310133
987113101AX
98711310233
987113102AX

The product you are viewing cross references to these numbers
FSPOR991TSSRXVQ
Product Information
Product Information
Fabspeed RACE Valved Supersport X-Pipe Exhaust System.

The Fabspeed Porsche 991 Turbo / Turbo S Valved Supersport X-Pipe Exhaust System is a high-performance exhaust upgrade designed to deliver enhanced exhaust sound, improved gas flow and driver-controlled exhaust volume for the Porsche 911 Turbo and Turbo S (991.1), manufactured between 2013 and 2016.

Fits:

  • Porsche 991.1 Turbo 3.8L (520 Bhp) 2014-16
  • Porsche 991.1 Turbo S 3.8L (560 Bhp) 2014-16  


The standard Porsche 991 Turbo exhaust system is engineered to balance performance, emissions and noise regulations. Although effective for everyday driving, its factory mufflers and catalytic converter arrangement can restrict exhaust sound and reduce the audible character of the turbocharged flat-six engine.

Fabspeed developed the Valved Supersport X-Pipe Exhaust System to provide a more engaging exhaust experience while retaining the flexibility of adjustable sound control.

At the heart of the system is a specially engineered 2.75-inch (70 mm) quad-resonated X-pipe, designed to balance exhaust flow and sound characteristics.

With the exhaust valves closed, gases are directed through the resonated X-pipe, producing a smoother, more controlled exhaust note suitable for lower-noise driving.

When the valves are opened, exhaust gases bypass the resonated X-pipe section, creating a more direct flow path and producing a substantially louder, more aggressive exhaust sound.

This dual-mode configuration allows the driver to enjoy two distinct exhaust characteristics from one system.

Manufactured from 14–16 gauge T304L stainless steel, the exhaust uses CNC mandrel-bent tubing to maintain consistent internal pipe diameter and smooth gas flow.

The system incorporates high-quality Helical vacuum-operated exhaust valves, engineered to withstand the high temperatures and demanding operating conditions associated with turbocharged performance engines.

Available with either high-flow sports catalytic converters or race-only catalytic converter bypass pipes, the system can be configured for different performance requirements and intended applications.

The exhaust is completed with Fabspeed's deluxe quad-style exhaust tips, available in a choice of finishes to complement the Porsche 991 Turbo's rear styling.

Designed as a bolt-on replacement, the system can be installed without cutting or welding, making it a substantial exhaust upgrade for enthusiasts seeking improved sound, performance potential and premium construction.

What This Product Does:
The Fabspeed Valved Supersport X-Pipe replaces the corresponding factory exhaust components with a freer-flowing performance exhaust arrangement.

Its main functions include:

  • Improves Exhaust Gas Flow: Uses a performance-oriented pipe layout to reduce unnecessary restrictions within the exhaust system.
  • Provides Driver-Controlled Exhaust Sound: Allows switching between two distinct sound characteristics.
  • Creates a Refined Closed-Valve Mode: Directs exhaust gases through the quad-resonated X-pipe for a smoother, more subdued exhaust note.
  • Delivers an Aggressive Open-Valve Mode: Bypasses the resonated section to produce a louder, more direct exhaust sound.
  • Enhances Turbocharged Flat-Six Character: Makes the distinctive exhaust note of the Porsche 3.8L twin-turbocharged engine more prominent.
  • Supports Performance Optimisation: Provides an exhaust configuration designed to improve flow and potentially enhance engine response.
  • Reduces Exhaust System Weight: Fabspeed lists an approximate 5 lb weight reduction compared with the corresponding factory arrangement.
  • Uses High-Flow Stainless Steel Pipework: Mandrel-bent tubing helps maintain consistent exhaust flow through pipe bends.
  • Provides Durable Valve Operation: Uses Helical vacuum-actuated valves designed for high-temperature service.
  • Enhances Rear Styling: Includes deluxe quad-style exhaust tips.
  • Supports Different Vehicle Configurations: Offers valve-control options for vehicles with or without factory Porsche Sport Exhaust.
  • Maintains Bolt-On Installation: Designed to fit the corresponding Porsche 991 Turbo application without cutting or welding.

Symptoms Of Wear Or Failure:
The Fabspeed Valved Supersport X-Pipe is primarily a performance upgrade rather than a component that must be replaced at a fixed service interval.

However, deterioration of the original exhaust system or faults within an existing valved exhaust assembly may make replacement or repair necessary.

  • Hissing, ticking or blowing noises.
  • Increased exhaust volume from an unexpected location.
  • Soot deposits around exhaust joints.
  • Exhaust fumes around the rear of the vehicle.
  • Increased noise during acceleration.
  • Visible rust or deterioration.
  • Weak or damaged welds.
  • Cracked mounting points.
  • Perforated pipework.
  • Exhaust sections becoming loose or insecure.
  • Exhaust sound remaining unchanged when switching modes.
  • One exhaust valve operating while the other remains stationary.
  • A valve stuck open, causing consistently high exhaust volume.
  • A valve stuck closed, preventing the louder operating mode.
  • Unusual metallic rattling around the valve assemblies.
  • Irregular valve movement.

Why Replacement / Upgrading Matters:
Upgrading to the Fabspeed Valved Supersport X-Pipe can improve the driving experience by combining performance-oriented exhaust flow with adjustable sound control.
  • Two Exhaust Sounds in One System: Switches between a more refined resonated mode and a louder performance mode.
  • Enhanced Exhaust Character: Brings out the distinctive sound of the Porsche 991 Turbo's twin-turbocharged flat-six engine.
  • Improved Exhaust Flow: Uses larger performance-oriented pipework and an optimised flow path.
  • Potential Performance Gains: Designed to support improved power delivery and throttle response, depending on vehicle configuration.
  • High-Quality Construction: T304L stainless steel provides excellent resistance to corrosion and heat-related deterioration.
  • Premium Helical Exhaust Valves: Provides a durable valve arrangement engineered for demanding operating conditions.
  • CNC Mandrel-Bent Tubing: Maintains a consistent internal diameter through bends to support smooth gas flow.
  • Reduced Exhaust Weight: Offers a lighter configuration than the corresponding original exhaust arrangement.
  • Customisable Appearance: Deluxe quad-style tips provide a choice of finishes.
  • Adaptable Control: Can be configured for vehicles equipped with factory PSE or an additional Fabspeed valve controller.
  • Direct Bolt-On Design: Avoids the need for permanent cutting or welding during installation.
  • Premium Performance Engineering: Developed specifically for the Porsche 991 Turbo and Turbo S platform.



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

FSPOR991TSSRXVQ
99111133105
99111133106
99111133107
99111133504
99111133505
99111133506
99111133507

The product you are viewing cross references to these numbers
FSPOR991TSSXXVQ
Product Information
Product Information
Fabspeed STREET Valved Supersport X-Pipe Exhaust System.

The Fabspeed Porsche 991 Turbo / Turbo S Valved Supersport X-Pipe Exhaust System is a high-performance exhaust upgrade designed to deliver enhanced exhaust sound, improved gas flow and driver-controlled exhaust volume for the Porsche 911 Turbo and Turbo S (991.1), manufactured between 2013 and 2016.

Fits:

  • Porsche 991.1 Turbo 3.8L (520 Bhp) 2014-16
  • Porsche 991.1 Turbo S 3.8L (560 Bhp) 2014-16  


The standard Porsche 991 Turbo exhaust system is engineered to balance performance, emissions and noise regulations. Although effective for everyday driving, its factory mufflers and catalytic converter arrangement can restrict exhaust sound and reduce the audible character of the turbocharged flat-six engine.

Fabspeed developed the Valved Supersport X-Pipe Exhaust System to provide a more engaging exhaust experience while retaining the flexibility of adjustable sound control.

At the heart of the system is a specially engineered 2.75-inch (70 mm) quad-resonated X-pipe, designed to balance exhaust flow and sound characteristics.

With the exhaust valves closed, gases are directed through the resonated X-pipe, producing a smoother, more controlled exhaust note suitable for lower-noise driving.

When the valves are opened, exhaust gases bypass the resonated X-pipe section, creating a more direct flow path and producing a substantially louder, more aggressive exhaust sound.

This dual-mode configuration allows the driver to enjoy two distinct exhaust characteristics from one system.

Manufactured from 14–16 gauge T304L stainless steel, the exhaust uses CNC mandrel-bent tubing to maintain consistent internal pipe diameter and smooth gas flow.

The system incorporates high-quality Helical vacuum-operated exhaust valves, engineered to withstand the high temperatures and demanding operating conditions associated with turbocharged performance engines.

Available with either high-flow sports catalytic converters or race-only catalytic converter bypass pipes, the system can be configured for different performance requirements and intended applications.

The exhaust is completed with Fabspeed's deluxe quad-style exhaust tips, available in a choice of finishes to complement the Porsche 991 Turbo's rear styling.

Designed as a bolt-on replacement, the system can be installed without cutting or welding, making it a substantial exhaust upgrade for enthusiasts seeking improved sound, performance potential and premium construction.

What This Product Does:
The Fabspeed Valved Supersport X-Pipe replaces the corresponding factory exhaust components with a freer-flowing performance exhaust arrangement.

Its main functions include:

  • Improves Exhaust Gas Flow: Uses a performance-oriented pipe layout to reduce unnecessary restrictions within the exhaust system.
  • Provides Driver-Controlled Exhaust Sound: Allows switching between two distinct sound characteristics.
  • Creates a Refined Closed-Valve Mode: Directs exhaust gases through the quad-resonated X-pipe for a smoother, more subdued exhaust note.
  • Delivers an Aggressive Open-Valve Mode: Bypasses the resonated section to produce a louder, more direct exhaust sound.
  • Enhances Turbocharged Flat-Six Character: Makes the distinctive exhaust note of the Porsche 3.8L twin-turbocharged engine more prominent.
  • Supports Performance Optimisation: Provides an exhaust configuration designed to improve flow and potentially enhance engine response.
  • Reduces Exhaust System Weight: Fabspeed lists an approximate 5 lb weight reduction compared with the corresponding factory arrangement.
  • Uses High-Flow Stainless Steel Pipework: Mandrel-bent tubing helps maintain consistent exhaust flow through pipe bends.
  • Provides Durable Valve Operation: Uses Helical vacuum-actuated valves designed for high-temperature service.
  • Enhances Rear Styling: Includes deluxe quad-style exhaust tips.
  • Supports Different Vehicle Configurations: Offers valve-control options for vehicles with or without factory Porsche Sport Exhaust.
  • Maintains Bolt-On Installation: Designed to fit the corresponding Porsche 991 Turbo application without cutting or welding.

Symptoms Of Wear Or Failure:
The Fabspeed Valved Supersport X-Pipe is primarily a performance upgrade rather than a component that must be replaced at a fixed service interval.

However, deterioration of the original exhaust system or faults within an existing valved exhaust assembly may make replacement or repair necessary.

  • Hissing, ticking or blowing noises.
  • Increased exhaust volume from an unexpected location.
  • Soot deposits around exhaust joints.
  • Exhaust fumes around the rear of the vehicle.
  • Increased noise during acceleration.
  • Visible rust or deterioration.
  • Weak or damaged welds.
  • Cracked mounting points.
  • Perforated pipework.
  • Exhaust sections becoming loose or insecure.
  • Exhaust sound remaining unchanged when switching modes.
  • One exhaust valve operating while the other remains stationary.
  • A valve stuck open, causing consistently high exhaust volume.
  • A valve stuck closed, preventing the louder operating mode.
  • Unusual metallic rattling around the valve assemblies.
  • Irregular valve movement.

Why Replacement / Upgrading Matters:
Upgrading to the Fabspeed Valved Supersport X-Pipe can improve the driving experience by combining performance-oriented exhaust flow with adjustable sound control.
  • Two Exhaust Sounds in One System: Switches between a more refined resonated mode and a louder performance mode.
  • Enhanced Exhaust Character: Brings out the distinctive sound of the Porsche 991 Turbo's twin-turbocharged flat-six engine.
  • Improved Exhaust Flow: Uses larger performance-oriented pipework and an optimised flow path.
  • Potential Performance Gains: Designed to support improved power delivery and throttle response, depending on vehicle configuration.
  • High-Quality Construction: T304L stainless steel provides excellent resistance to corrosion and heat-related deterioration.
  • Premium Helical Exhaust Valves: Provides a durable valve arrangement engineered for demanding operating conditions.
  • CNC Mandrel-Bent Tubing: Maintains a consistent internal diameter through bends to support smooth gas flow.
  • Reduced Exhaust Weight: Offers a lighter configuration than the corresponding original exhaust arrangement.
  • Customisable Appearance: Deluxe quad-style tips provide a choice of finishes.
  • Adaptable Control: Can be configured for vehicles equipped with factory PSE or an additional Fabspeed valve controller.
  • Direct Bolt-On Design: Avoids the need for permanent cutting or welding during installation.
  • Premium Performance Engineering: Developed specifically for the Porsche 991 Turbo and Turbo S platform.



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

FSPOR991TSSXXVQ
99111133105
99111133106
99111133107
99111133504
99111133505
99111133506
99111133507

The product you are viewing cross references to these numbers
TSPO991T13.001.A
Product Information
Product Information
Sports exhaust rear silencer Porsche 911 turbo and 911 turbo S (991.1 and 991.2) 2013-2019

Fits
Porsche 911 turbo 991.1
Porsche 911 turbo S 991.1
Porsche 911 turbo 991.2
Porsche 911 turbo S 991.2

RACETRACK USE ONLY
These components are designed and developed for racetrack use and to maximise the car's performance. They are not street legal and must be installed by professionals in the sector

INSTALLATION
This kit includes the central silencer without bypass valves and replaces the catalytic converters and the rear silencer. The kit is compatible with all 991.1 and 991.2 turbo and turbo S models
The component is perfectly interchangeable with the original components, following the instructions in the constructor's workshop manual

ECU REMAPPING
ENGINE LIGHT
Replacement or removal of components such as catalytic converters, GPFs and electric actuators may cause the engine warning light to come on. In this case, the installer must reprogram the software to eliminate the light

SOUND - TUBI SOUND
Tubi Sound is the standard sound of Tubi Style exhausts, louder and more powerful than the original sound. This sound represents our brand

MATERIAL
AISI 304 STAINLESS STEEL
A choice stainless steel ideal for aggressive environments where combustion emissions can cause serious chemical corrosion on other types of metal

MAIN PIPE DIMENSION - 65mm
This is the diameter of the main pipe of the exhaust system

CATALYTIC CONVERTER REMOVAL
Complete removal of the catalytic converter minimises exhaust back pressure and delivers optimum results in terms of performance and weight reduction

NO EXHAUST BYPASS VALVE
The exhaust system does not include a valve and always guarantees the most impressive sound. If the standard system includes one, control of the valve by both the engine ECU and by the driver via the specific control systems is no longer possible

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

TSPO991T13.001.A
99111102790
99111173170
99111173140

The product you are viewing cross references to these numbers
TSPO991T13.004.AK
Product Information
Product Information
Sports exhaust rear silencer Porsche 911 turbo and 911 turbo S with catalytic converters (991.1 and 991.2) 2013-2019

Fits
Porsche 911 turbo 991.1
Porsche 911 turbo S 991.1
Porsche 911 turbo 991.2
Porsche 911 turbo S 991.2

RACETRACK USE ONLY
These components are designed and developed for racetrack use and to maximise the car's performance. They are not street legal and must be installed by professionals in the sector

INSTALLATION
This kit includes the central silencer without bypass valves and replaces the catalytic converters and the rear silencer. The kit is compatible with all 991.1 and 991.2 turbo and turbo S models
The component is perfectly interchangeable with the original components, following the instructions in the constructor's workshop manual

SOUND - TUBI SOUND
Tubi Sound is the standard sound of Tubi Style exhausts, louder and more powerful than the original sound. This sound represents our brand

MATERIAL
AISI 304 STAINLESS STEEL
A choice stainless steel ideal for aggressive environments where combustion emissions can cause serious chemical corrosion on other types of metal

MAIN PIPE DIMENSION - 65mm
This is the diameter of the main pipe of the exhaust system

NO EXHAUST BYPASS VALVE
The exhaust system does not include a valve and always guarantees the most impressive sound. If the standard system includes one, control of the valve by both the engine ECU and by the driver via the specific control systems is no longer possible

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

TSPO991T13.004.AK
99111102790
99111173170
99111173140

The product you are viewing cross references to these numbers
TSPOCSIT13.800.A
Product Information
Product Information
Sports exhaust rear silencer Porsche 991 turbo and turbo S 2013-2019

Fits
991.1 and 991.2
Porsche 991 turbo
Porsche 991 turbo S


The muffler can be fitted on all 911 Turbo and Turbo S versions, both 991.1 and 991.2
The component is perfectly interchangeable with the original components, following the instructions in the constructor's workshop manual

RACETRACK USE ONLY
These components are designed and developed for racetrack use and to maximise the car's performance. They are not street legal and must be installed by professionals in the sector

SOUND - TUBI SOUND
Tubi Sound is the standard sound of Tubi Style exhausts, louder and more powerful than the original sound. This sound represents our brand

END TIPS DESIGN - OE
The muffler must be used in conjunction with the original exhaust end tips

END TIPS NUMBER AND POSITION - 2 + 2 AT THE SIDES
The tailpipes are located low down at the sides of the car. There are two tailpipes at each side

MATERIAL - AISI 304 STAINLESS STEEL
A choice stainless steel ideal for aggressive environments where combustion emissions can cause serious chemical corrosion on other types of metal
9996001111
Product Information
Product Information
Switch set for sound valves.

Fits:
All Porsche models with vacuum operated valvetronic exhaust systems

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

9996001111
98622094335SSOUND

The product you are viewing cross references to these numbers
3606009120
Product Information
Product Information
A Voucher for £100 available when you buy this product. For more information CLICK HERE

DesignTek Titanium exhaust system with titanium valve and titanium tail pipe.

Fits:
Porsche 991.1 Turbo

For Wiring Diagram please CLICK HERE

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

3606009120
3606009120
55-PS124-T
99111173170
99111173171

The product you are viewing cross references to these numbers
P991.20.4080
Product Information
Product Information
X-pipe race exhaust.

Fits:
Porsche 991 Turbo | Turbo S

X-PIPE Race Exhaust cat back system. Advantages of X-PIPE RACE. Considerable weight reduction! Extreme reduction of thermals by low exhaust back pressure! Incredible Turbosound. Performance enhancement and more torque.
No CEL (Check Engine Light) Horsepower and torque increased up without software upgrade Deep aggressive exhaust sound.
Reduced backpressure & Reduced temperature. Significant weight savings over the stock system.

Direct bolt on replacement with all hardware and clamps included. The exhaust fits the original tailpipe sets.

100% Made in Germany

This X-pipe race exhaust is delivered included mounting material.

Please note this item is not a stock product. It is a special order part and once ordered with us is not subject to cancellation or return unless proven not fit for purpose or defected.

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

P991.20.4080
P991.20.4080

The product you are viewing cross references to these numbers
DISPLAYING 1 to 13 (of 13 products)
Also found on these pages
About All Silencers / Mufflers

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.

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