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Switchable Silencers / Mufflers
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
Fits:
Porsche 997-1 Carrera 3.6L 2005-08*
Porsche 997-1 Carrera 4 3.6L 2006-08*
Porsche 997-1 Targa 3.6L 2007-08*
Porsche 997-1 Carrera S 3.8L 2005-08
Porsche 997-1 Carrera 4S 3.8L 2006-08
Porsche 997-1 Targa 4S 3.8L 2007-08
*Please note: If your vehicle is a non-S 3.6L model, replacement Carrera S (3.8L-style) tailpipes will also be required, as the original tailpipes are not compatible with this system. Vehicles originally equipped with Porsche Sports Exhaust (PR XLF) will also require replacement tailpipes, as the factory PSE tailpipes are incompatible. Compatible tailpipes can be found on our website, and selected options may also be suggested when adding this kit to your basket.
Important Information
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Related, superseded, cross reference or alternative numbers for comparison.
EXHAUSTKIT997-1
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
Fits:
Porsche 997 3.8L C2S /C4S 08/2004-07/2008
Porsche 997 3.6L C2 /C4 08/2004-07/2008 *** please also use tail pipe 99711197901S
Output flange 2.25" / 58mm
Please note: This valvetronic exhaust does not come with fitting kit. If your car doesn't have sport switchable system already fitted you can buy fitting kit with remote controls CLICK HERE
Listen to the set with OPEN Valves
Listen to the set with CLOSED Valves
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99722097330SSOUND
The product you are viewing cross references to these numbers
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
The Porsche sound is a legendary mix of power, presence and athletic potential. Now you can make even more of your car with this stainless steel sports exhaust system. Sound output varies as throttle inputs change, from a standard note during normal road driving to a more aggressive tone under high-performance use. A soundproofing switch enables you to reduce noise output to standard levels when required. Includes stainless steel tailpipes with hard-chrome finish.
This product requires a extra switch which is not included in the kit you have two choices
1. 99761312900FHM Cars WITHOUT "PASM" electronic damper control
2. 99761313100FHM Cars WITH "PASM" electronic damper control
Fits:
Porsche 997 MK1 C2 / C4 / C2S / C4S 2005>>
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99704420103
The product you are viewing cross references to these numbers
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
Fits:
Porsche 997 C2, C4, C2S, C4S
*if you buy this exhaust for non S model or model with the Porsche Sports Exhaust, you will need to purchase new S-type tailpipes (Output flange 2.25" / 58mm) . If you have a factory Porsche PSE (Porsche sport exhaust) this system can replace the original exhaust boxes, you will be able to use the original switches in your car
It is recommended to run the exhaust mostly in the open valve mode (loud) as closed valve mode might be too restrictive for engine gas flow for longer periods of time and result in loss of engine power.
DesignTek Valvetronic sports exhaust system gives smooth 15Bhp/17 ft-lbs of torque to the wheels with the valves opened, Made from high quality 14-16 gauge T304 stainless steel, hydro-formed muffler cases, radiuses stressed relieved with 2000 degree ceramic fiber and stainless steel wool packed free flow mufflers.
This unique exhaust configures a dual-tone setup controlled by a key fob which you can switch on the fly. Direct replacement for the factory mufflers and will work with the stock catalytic converters or any aftermarket sport cats designed to fit with OEM exhaust systems
Superb sports car sound, throaty and deep with the valves opened, but docile with the valves closed. You can reuse your factory OEM Porsche tips or you can opt for DesignTek tail pipes.
Please note the remote controlers do not come with batteries. You will have to source them at your own cost. The type is CR2025
Installation instructions for Valvetronic Mufflers CLICK HERE
For Wiring Diagram please CLICK HERE
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
3606009716
The product you are viewing cross references to these numbers
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
Ninemeister 9m Valved Sports Exhaust Rear Silencers – Stainless Steel
Transform the sound and driving experience of
your Porsche 911 Carrera 997.1 with the Ninemeister 9m Valved Sports Exhaust
Rear Silencers.
Fits:
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
Designed specifically for Porsche 997.1 this premium performance exhaust system delivers a deeper, richer and more aggressive sports car soundtrack while retaining the flexibility of quieter operation when required.
The electronically controlled exhaust valves allow the driver to switch between a refined exhaust tone and a more pronounced sports exhaust sound at the push of a button.
Manufactured from high-quality 304-grade stainless steel and precision welded for strength and durability, the system is designed as a direct replacement for the original rear silencers, requiring no cutting or welding.
Supplied complete with twin exhaust tailpipes, available in silver or black finish, and an exhaust valve control module, this is an ideal upgrade for Porsche owners seeking improved sound, throttle response and everyday driving enjoyment.
What Do the Ninemeister 9m Valved Sports Silencers Do?
The Ninemeister 9m sports exhaust system replaces the original rear silencers with performance-designed stainless steel units featuring electronically operated exhaust valves.
The valves allow the exhaust sound to be adjusted between quieter and louder settings, giving the driver greater control over the character of the engine.
With the valves in the quieter setting, the exhaust maintains a more restrained tone suitable for everyday driving.
When the valves are opened, the system produces a deeper and more aggressive flat-six soundtrack, enhancing the driving experience during acceleration and spirited driving.
Why Upgrade to Ninemeister 9m Sports Exhaust Silencers?
The original Porsche 997.1 Carrera exhaust system is designed to balance performance, comfort and refinement.
For owners wanting a more distinctive exhaust sound, the Ninemeister 9m system offers greater flexibility without sacrificing everyday usability.
Benefits include:
- Deeper and more engaging Porsche flat-six exhaust note
- Driver-selectable quiet and sports exhaust settings
- Noticeable improvement in exhaust sound and throttle response
- Electronically operated exhaust valves
- Premium 304-grade stainless steel construction
- Precision-welded design for strength and durability
- Direct replacement for the original rear silencers
- No cutting or welding required
- Choice of silver or black twin tailpipes
- Supplied with exhaust valve control module
- Manufacturer's lifetime guarantee
Electronically
Controlled Exhaust Valves
One of the main advantages of the Ninemeister 9m system is the ability to adjust the exhaust sound at the push of a button.
The supplied valve control module operates the exhaust valves, allowing the driver to select a quieter setting or a more pronounced sports exhaust tone.
This makes the system suitable for owners who want a more aggressive exhaust sound during enthusiastic driving without permanently committing to a louder exhaust configuration.
Why Choose 304-Grade Stainless Steel?
The Ninemeister 9m rear silencers are manufactured from premium 304-grade stainless steel, offering excellent resistance to corrosion, heat and everyday environmental exposure.
Unlike conventional mild-steel exhaust components, stainless steel provides improved protection against moisture, road salt and long-term deterioration.
Precision-welded construction further enhances the strength and durability of the exhaust system.
The silencers are supplied with a manufacturer's lifetime guarantee, subject to the applicable warranty terms and conditions.
Improved Exhaust Sound & Throttle Response
The Ninemeister 9m system is designed to deliver a noticeable improvement in the exhaust character of the Porsche 997.1 Carrera.
Its sports silencer design allows the naturally aspirated flat-six engine to produce a deeper, richer and more distinctive sound, particularly under acceleration.
The manufacturer also reports improved throttle response, contributing to a more engaging driving experience.
Specific power or torque gains are not stated and should not be assumed.
When Should the Sports Exhaust Be Fitted?
The Ninemeister 9m Valved Sports Exhaust is primarily a performance and sound upgrade rather than a routine service replacement.
It is ideal for owners who want to:
- Enhance the original Porsche flat-six exhaust sound
- Add selectable quiet and sports exhaust settings
- Replace ageing or corroded original silencers
- Upgrade to a durable stainless steel exhaust system
- Improve the appearance of the rear exhaust tailpipes
- Enjoy a more engaging driving experience
- Retain everyday usability with adjustable exhaust volume
Check the vehicle's model year and exhaust configuration before ordering.
Installation Notes
The Ninemeister 9m Valved Sports Exhaust is designed as a direct bolt-on replacement for the factory rear silencers.
No cutting or welding is required when fitted to a compatible vehicle with the original exhaust mounting arrangement.
The supplied valve control module must be installed according to the manufacturer's instructions to ensure correct operation of the electronically controlled exhaust valves.
Professional installation is recommended. All exhaust connections, mounting points, electrical connections and clearances should be checked before the vehicle is returned to service.
Confirm local road-use noise regulations and any applicable vehicle approval requirements before installation.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9M99711161100
The product you are viewing cross references to these numbers
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
This is the switch required for the original Porsche sport exhaust system our part number code 99994420103
Fits:
For cars WITHOUT "PASM" electronic damper control
Porsche 997 MKI Carrera
Porsche 997 MKI Carrera S
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99761312900FMH
The product you are viewing cross references to these numbers
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
This is the switch required for the original Porsche sport exhaust system our part number code 99994420103
Fits:
Cars WITH "PASM" electronic damper control
Porsche 997 MKI Carrera
Porsche 997 MKI Carrera S
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99761313100FMH
The product you are viewing cross references to these numbers
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche Boxster 987 MKII 2.9L 2009-12
- Porsche Boxster S 987 MKII 3.4L 2009-12
- Porsche Boxster 981 2.7L 2012-16
- Porsche Boxster 981 S / GTS 3.4L 2012-16
- Porsche Boxster 718 2.0L Manual (300 Bhp) 2017>>
- Porsche Boxster 718 2.0L PDK (300 Bhp) 2017>>
- Porsche Boxster S 718 2.5L Manual (350 Bhp) 05/2017>>
- Porsche Boxster S 718 2.5L PDK (350 Bhp) 05/2017>>
- Porsche Boxster T 718 2.0L Manual (300 Bhp) 01/2019>>
- Porsche Boxster T 718 2.0L PDK (300 Bhp) 01/2019>>
- Porsche Boxster GTS 718 2.5L Manual (365 Bhp) 05/2017>>
- Porsche Boxster GTS 718 2.5L PDK (365 Bhp) 05/2017>>
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 TURBO 2000-05
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MK1 TURBO 2007-09
- Porsche 991.1 Carrera C2 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C2S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.1 Carrera C4 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C4S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.1 Turbo 3.8L (520 Bhp) 2014-16
- Porsche 991.1 Turbo S 3.8L (560 Bhp) 2014-16
- Porsche 991.2 Carrera 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 2S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Carrera 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Targa 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Targa 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Turbo Coupe 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Coupe 3.8L (580 Bhp) 2016-19
- Porsche 991.2 Turbo Cabriolet 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Cabriolet 3.8L (580 Bhp) 2016-19
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
- Porsche Cayman 2.9L 987C MKII 2009-12
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
- Porsche Cayman 2.7L 981 2013-16
- Porsche Cayman S / GTS 3.4L 981 2013-16
- Porsche Cayman 718 2.0L Manual (300 Bhp)
- Porsche Cayman 718 2.0L PDK (300 Bhp)
- Porsche Cayman S 718 2.5L Manual (350 Bhp)
- Porsche Cayman S 718 2.5L PDK (350 Bhp)
- Porsche Cayman T 718 2.0L Manual (300 Bhp)
- Porsche Cayman T 718 2.0L PDK (300 Bhp)
- Porsche Cayman GTS 718 2.5L Manual (365 Bhp)
- Porsche Cayman GTS 718 2.5L PDK (365 Bhp)
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
9m Universal Exhaust Vacuum Valve Controller
Take greater control of a vacuum-operated sports exhaust system with the 9m Universal Exhaust Vacuum Valve Controller.
Developed by Ninemeister to enhance the functionality of exhaust valve systems, the controller allows the exhaust valves to be operated remotely using the supplied key fobs. The kit uses a vacuum control module and is designed for straightforward installation without cutting or splicing into the vehicle's factory wiring or fuses.
What Does the Exhaust Valve Controller Do?
Many sports exhaust systems use vacuum-operated valves to change the route exhaust gases take through the silencer. Opening or closing these valves alters the exhaust sound.
The 9m controller provides additional control over this system, allowing the driver to operate compatible vacuum exhaust valves using a dedicated remote key fob.
This is particularly useful for vehicles fitted with a valved sports exhaust where the owner wants convenient independent control of the exhaust valves.
Why Upgrade?
A dedicated exhaust valve controller gives the driver greater control over when the exhaust valves operate.
The 9m system is also designed to minimise installation complexity. Power is supplied through a cigarette lighter adaptor, so there is no requirement to cut or splice into the factory wiring or fuse system.
Kit Includes
- 9m vacuum control module
- Two remote-control key fobs
- Vacuum tubing
- Cigarette lighter power adaptor
- High-quality remotes with Ninemeister logo
- Components required for straightforward connection and installation
Key Features
- Universal vacuum exhaust valve controller
- Remote operation of compatible exhaust valves
- Supplied with two key fobs
- Simple power connection
- No cutting of factory wiring required
- No splicing into factory fuses
- Ideal for compatible valved sports exhaust systems
- Ninemeister branded remote controls
Universal Vacuum Exhaust Valve Controllers
A vacuum exhaust valve controller is an ideal addition to a compatible valved sports exhaust, giving the driver convenient remote control over exhaust valve operation.
Rather than relying solely on the vehicle's original exhaust valve strategy, the 9m controller provides a dedicated remote-control solution while avoiding permanent modifications to the factory wiring.
For Porsche owners searching for a remote exhaust valve controller, vacuum-operated sports exhaust controller or universal valved exhaust remote, the 9m kit provides a simple solution suitable for compatible vacuum-controlled exhaust systems.
Porsche Switchable Silencers & Mufflers - Dual-Mode Performance Exhaust Systems
Switchable Silencers / Mufflers offer Porsche owners the best of both worlds—refined, road-friendly exhaust sound when cruising, and an aggressive, performance-focused tone at the touch of a button. Using valve-controlled technology, these exhaust systems allow drivers to switch between quiet and sport modes, delivering enhanced sound, performance, and driving engagement on demand.
Available from Design911, Porsche switchable silencers include both genuine Porsche-engineered systems and high-quality aftermarket performance options, all designed to integrate seamlessly with your vehicle’s existing exhaust components and control systems.
What Do Switchable Silencers / Mufflers Do?
Switchable silencers use internal exhaust valves to control sound level and exhaust flow.
Core Functions:
- Allow selectable quiet and sport exhaust modes.
- Improve exhaust gas flow under performance driving.
- Enhance throttle response and engine efficiency.
- Maintain refined sound levels for everyday driving.
- Deliver a more engaging driving experience on demand.
These systems adapt your Porsche’s character to suit any driving situation.
Why Do Standard Exhaust Silencers Fail or Fall Short?
Factory exhaust systems are designed to meet noise
regulations and long-term durability requirements, which can limit performance
and sound. Common issues include:
- Internal corrosion from heat and condensation.
- Restrictive baffling reducing exhaust flow.
- Fixed sound levels with no adaptability.
- Valve or actuator wear in older switchable systems.
- Limited performance compatibility with tuned engines.
Over time, standard silencers may lose efficiency, sound quality, or reliability.
Why Upgrade to Switchable Silencers / Mufflers?
Upgrading to a switchable exhaust system enhances both performance and versatility.
Upgrade Benefits:
- Dual-mode exhaust sound at the press of a button.
- Improved exhaust flow for better performance.
- Sportier, more engaging exhaust note when desired.
- Maintains comfort and compliance in quiet mode.
- Ideal for road, touring, and spirited driving.
Whether OEM or aftermarket, switchable silencers offer flexibility without compromise.
Highlights
- Porsche switchable silencer and muffler upgrades
- Valve-controlled exhaust sound adjustment
- OEM Porsche and premium aftermarket options
- Improved performance, sound, and driving engagement
- Compatible with factory systems and controls