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Porsche // 911 & 912 (1965-1989) // 911 1975-1977 3.0L Turbo (930)
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- Porsche 992.1 GT3 4.0L / 992 S/T 4.0L 2021-24
- Porsche 992.1 GT3 RS 4.0L 2022-24
- Porsche 992.2 GT3 / Touring / S/C 2025>>
Ninemeister Sports Exhaust X-Pipe Valved Silencer with OPF – Titanium
The Ninemeister 9M Titanium Valved X-Pipe Silencer is a
high-performance exhaust upgrade designed to enhance the sound and
responsiveness of Porsche 992 GT3 models fitted with an OPF (Otto Particulate
Filter).
Fits:
- Porsche 992.1 GT3 4.0L / 992 S/T 4.0L 2021-24
- Porsche 992.1 GT3 RS 4.0L 2022-24
- Porsche 992.2 GT3 / Touring / S/C 2025>>
Manufactured from lightweight TC4 titanium, it features a high-flow X-pipe design that produces a deeper, more pronounced exhaust note while retaining the original Porsche exhaust valve control.
This version is specifically intended for vehicles fitted with the factory OPF system. Confirm vehicle specification before ordering.
What Does It Do?
The Ninemeister X-pipe silencer replaces the original rear exhaust silencer, improving exhaust gas flow and enhancing the sound of the naturally aspirated 4.0L flat-six engine.
Its X-pipe configuration produces a deeper, more engaging exhaust note while retaining the factory-controlled exhaust valves.
Why Upgrade?
The original Porsche exhaust system is designed to meet strict noise and emissions requirements, which can restrict the character of the exhaust sound.
The Ninemeister system offers:
- Deeper, more pronounced exhaust note
- High-flow X-pipe design
- Improved throttle response
- Approximately 50% weight reduction compared with the original silencer
- Retention of factory exhaust valve operation
- Direct-fit installation without ECU remapping
- No check engine light expected when correctly fitted
Advantages of Titanium
- Titanium offers several benefits over conventional stainless steel exhaust construction:
- Reduced Weight – Approximately 50% lighter than the original silencer, helping reduce rear vehicle mass.
- High Strength – TC4 titanium provides excellent strength relative to its weight.
- Heat Resistance – Suitable for the high temperatures experienced by performance exhaust systems.
- Corrosion Resistance – Resists deterioration from moisture and road conditions.
- Distinctive Sound – Thin-wall titanium construction contributes to a sharper, more distinctive exhaust character.
- The reduced weight is particularly beneficial for performance-focused Porsche GT models.
Exhaust Valve Operation
The Ninemeister silencer retains the original Porsche exhaust valve control system.
This allows the exhaust characteristics to change according to the vehicle's factory valve settings, providing a more engaging sound when the valves are open.
Tailpipe Options
Available with optional 4-inch slash-cut tailpipes in:
- Silver finish
- Black finish
Tailpipes are optional and should be selected separately where required.
Installation Notes
The silencer is designed as a direct replacement for the original rear exhaust assembly.
No ECU remapping is required according to Ninemeister. Professional installation is recommended.
Confirm OPF compatibility and local road-use noise regulations before fitting.
Key Features
- Ninemeister 9M titanium sports exhaust
- High-flow X-pipe silencer design
- Lightweight TC4 titanium construction
- Approximately 50% lighter than the factory silencer
- Deeper, enhanced flat-six exhaust sound
- Retains original exhaust valve control
- Improved throttle response
- Direct-fit installation
- No ECU remapping required
- Optional polished or black 4-inch tailpipes
- Designed for OPF-equipped Porsche 992 GT models
Porsche 992 GT3 / GT3 RS / Touring / S/T Titanium Sports Exhaust Systems
A titanium sports exhaust is a popular performance upgrade for Porsche 992 GT models, offering reduced weight, improved exhaust sound and a more engaging driving experience.
The Ninemeister 9M9GT251052 valved X-pipe silencer combines lightweight TC4 titanium construction with a high-flow design, enhancing the sound of the Porsche 4.0L naturally aspirated flat-six while retaining factory exhaust valve functionality.
Designed for OPF-equipped Porsche 992 GT3, GT3 RS, GT3 Touring and S/T applications, this system provides an alternative to the standard rear silencer without requiring ECU remapping.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9M9GT251052
The product you are viewing cross references to these numbers
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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.