Switchable Silencers / Mufflers

DesignTek front Muffler X-Pipe exhaust with valvetronic switch Porsche 991.1

Fits:
Porsche 991 Carrera 3.4L
Porsche 991 Carrera S 3.8L

This front Muffler X-Pipe exhaust is also interchangeable with the stock parts. The design deletes the front mufflers for a sports and race sound. You can keep all original exhaust fittings as the OEM fitting the same, like the factory centre muffler with its 3rd chamber, this floats behind the exhaust tip for a full stock look.

High-Performance Rear Exhaust with sound switch:
● Push the sound-button between:
Switch closed: Deep Sports Turbo Sound
Switch opened: Perfect Racing Sports Turbo Sound

Please note the remote controlers do not come with batteries. You will have to source them at your own cost. The type is CR2025

For Wiring Diagram please CLICK HERE

Click 'Zoom in' for large parts diagram.
3606009921 replace No 7.

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Related, superseded, cross reference or alternative numbers for comparison.

3606009921

The product you are viewing cross references to these numbers

DesignTek front X-Pipe exhaust with valvetronic switch Porsche 991 S 3.8L

Fits:
Porsche 991 Carrera 3.8L S

This front X-Pipe exhaust is also interchangeable with the stock parts. The design deletes the front mufflers for a sports and race sound. You can keep all original exhaust fittings as the OEM fitting the same, like the factory centre muffler with its 3rd chamber, this floats behind the exhaust tip for a full stock look.

High-Performance Rear Exhaust with sound switch:
● Push the sound-button between:
Switch closed: Deep Sports Turbo Sound
Switch opened: Perfect Racing Sports Turbo Sound

Please note the remote controllers do not come with batteries. You will have to source them at your own cost. The type is CR2025

For Wiring Diagram please CLICK HERE

3606009911 replaces No 7.

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Related, superseded, cross reference or alternative numbers for comparison.

3606009911

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Exhaust Muffler / Sport Switchable Race Exhaust System in Titanium DesignTek. With Cat bypass pipes.

High quality titanium exhaust system for the Porsche 991.1. Manifold back exhaust that includes Catalytic converter bypass and tailpipes.

The silencers in this exhaust are linked to one another, creating a greater balance between the two silencers which improves flow, performance and provides a sports sound. It is a performance exhaust with a louder note and boasts significant power gains over OE system. This is race / offroad use only.

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

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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

The product you are viewing cross references to these numbers

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

The product you are viewing cross references to these numbers

Milltek Sport Exhaust Rear Silencer For Porsche Sports Exhaust (PSE)

Fits:

Porsche 991.1 3.8ltr Carrera 2S 2011>>2015
Porsche 991.1 3.8ltr Carrera 4S 2011>>2015

Pipe Diameter: 2.76" (70.00mm)

Parts Assembly:
MSPO279: Rear Silencer for Porsche Sports Exhaust (PSE)

MSPO280: LH Valved Outlet Pipe
MSPO281: RH Valved Outlet Pipe

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

SSXPO181

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Sports exhaust kit Porsche 991.1 Carrera S 2012-2015

The kit includes the two side mufflers and the central silencer
Carrera S exhaust is different from Carrera because it has the bypass valves

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 FINISH - POLISHED
Mirror finishes are highly reflective and created by polishing the stainless steel. The polishing process enhances appearance and consistency, making cleaning easier. A special rolling procedure is used. It is essential to remove deep scratches as any surface defects will be very noticeable on the finished product. it improves corrosion resistance. The polishing eradicates crevices where corrosive particles can lodge themselves.

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

Sports exhaust side silencer straight pipe (with valves) Porsche 991GT3 and GT3 RS
Bypass pipes for side mufflers.

Fits
Porsche 911 GT3 and GT3 RS (991.1 and 991.2 2014-2019)

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

Material: Stainless Steel 304
Replacement for Genuine muffler 991.111.048.81



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

3606609145

The product you are viewing cross references to these numbers

Sports exhaust side silencer straight pipe with valves.
Replaces rear side silencers with straight pipes

Fits:
Porsche 911 GT3 and GT3 RS (997 Gen 1 and Gen 2)
Porsche 911 GT3 and GT3 RS (991.1 and 991.2 upto 2019)

This product can be mounted on every GT3, GTR RS, GT3 RS 4.0 versions, both on 997 Gen 1, Gen 2 and on 991.1 and 991.2 up to 2019

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 - STRAIGHT PIPE
The straight pipe version guarantees a direct path from the engine, removing all factors which may affect the acoustic tuning

SYSTEM FINISH - POLISHED
Mirror finishes are highly reflective and created by polishing the stainless steel. The polishing process enhances appearance and consistency, making cleaning easier. A special rolling procedure is used. It is essential to remove deep scratches as any surface defects will be very noticeable on the finished product. it improves corrosion resistance. The polishing eradicates crevices where corrosive particles can lodge themselves

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 in mm of the main pipe of the exhaust system

Sports exhaust silencer Porsche 991.1 Carrera S with bypass valves 2012-2015

Fits
Porsche 991.1 Carrera S 2012-2015
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

Stainless steel sports exhaust - valved.

Fits:
Porsche 991.1 Carrera 2 / Carrera 4 - 2012 to 2016
Porsche 991.1 Carrera 2S / Carrera 4S - 2012 to 2016

Product Description
Unleash the raw sound of your Porsche 991.1 with the Ultimate Performance Valved Exhaust by Rennline. This exhaust lets you keep your relationship healthy between you and you neighbours due to the dynamic valve technology built into our exhaust system. At the click of a button, you can keep your 991.1 quiet enough to appease anyone in your neighbourhood or open it up and let the loud pipes sing.

You have come to expect a certain level of quality and ease of installation when it comes to Rennline products. This part does not fall short in that category, made from 304 Stainless Steel and Tig Welded to perfection. It is truly a work of art. This exhaust is a direct bolt in replacement and is easily reversable back to stock and features an easy-to-follow install instructions.

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

EX27

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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

The product you are viewing cross references to these numbers

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

The product you are viewing cross references to these numbers