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Porsche > 992 (911) MK1 2019-2024 > 992.1 GT3 4.0L / 992 S/T 4.0L 2021-24 > Gearbox / Transmission >

Flywheel / Torque

Flywheel / Torque

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DISPLAYING 1 to 3 (of 3 products)
Dual-mass flywheel. Porsche 991 GT3 / 992 GT3 PDK - 99111402091, 9P1105264C
1
Dual-mass flywheel. Porsche 991 GT3 / 992 GT3 PDK
Special Order item
9P1105264C
Product Information
Product Information
Dual-mass flywheel. 

Fits:
Cars with PDK transmission (dual clutch) (PR:250)
Porsche 911 (991) 4.0 GT3 RS / R (368kw) 04/2015 - 12/2020
Porsche 911 (991) 4.0 GT3 (368kw) 05/2017 - 12/2020
Porsche 911 (991) 4.0 GT3 RS (383kw) 05/2018 - 12/2020
Porsche 911 (992) GT3 (375kw)  05/2021 - 05/2024
Porsche 911 (992) GT3 RS (386kw) 09/2022 - 05/2024

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Related, superseded, cross reference or alternative numbers for comparison.

9P1105264C
99111402091
9P1105264C

The product you are viewing cross references to these numbers
Dual-mass flywheel. Porsche 991 GT3 / 992 GT3 PDK *SACHS - 99111402091, 9P1105264C, 2295 601 051 - 2295 601 051
1
Dual-mass flywheel. Porsche 991 GT3 / 992 GT3 PDK *SACHS
9P1105264C/1
Product Information
Product Information
Dual-mass flywheel. 

Fits:
Cars with PDK transmission (dual clutch) (PR:250)
Porsche 911 (991) 4.0 GT3 RS / R (368kw) 04/2015 - 12/2020
Porsche 911 (991) 4.0 GT3 (368kw) 05/2017 - 12/2020
Porsche 911 (991) 4.0 GT3 RS (383kw) 05/2018 - 12/2020
Porsche 911 (992) GT3 (375kw)  05/2021 - 05/2024
Porsche 911 (992) GT3 RS (386kw) 09/2022 - 05/2024

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Related, superseded, cross reference or alternative numbers for comparison.

9P1105264C
99111402091
9P1105264C
2295 601 051

The product you are viewing cross references to these numbers
Lightweight Single Mass Flywheel Billet Steel. Porsche 991 / 992 GT3 / GT3 RS - 99111402090, 99111402091, 9P1105262B, 9P1105262D, 9P1105262F, 9P1105264C - 9M9P1105264
2
Lightweight Single Mass Flywheel Billet Steel. Porsche 991 / 992 GT3 / GT3 RS
9M9P1105264
Product Information
Product Information

Ninemeister 9m Single Mass Lightweight Flywheel 

Transform the response of your Porsche GT3 drivetrain with the Ninemeister 9m Single Mass Lightweight Flywheel, developed for Porsche 991 and 992 GT3 and GT3 RS models equipped with PDK transmission.

Fits:

  • Porsche 991.1 GT3 3.8L (475 Bhp) 2014-16
  • Porsche 991.1 GT3 RS 4.0L (500 Bhp) 2015-16
  • Porsche 991.2 GT3 4.0L (500 Bhp) / GT3 RS 4.0L (520 Bhp) 2017-19
  • Porsche 992.1 GT3 4.0L 2021-24
  • Porsche 992.1 GT3 RS 4.0L 2022-24

CNC machined from high-carbon forged billet steel, the 9m flywheel provides an impressive 45% weight reduction compared with the original component. By substantially reducing rotating mass and engine inertia, the engine can change speed more freely, producing sharper throttle response and quicker acceleration.

Designed as a direct replacement, this is a highly effective performance upgrade for GT3 and GT3 RS owners looking for a more immediate and responsive drivetrain without fundamentally changing the engine itself.

What Does a Flywheel Do?

The flywheel is connected to the engine crankshaft and forms an important link between the engine and transmission. Its rotating mass helps manage the transfer of engine torque while maintaining momentum as engine speed changes.

A conventional heavier flywheel stores more rotational energy, which can help smooth drivetrain operation. However, the engine must also accelerate and decelerate this additional mass every time the RPM changes.

Reducing flywheel weight means the engine has less rotating mass to accelerate, allowing it to respond more quickly to throttle inputs.

Why Upgrade to a Lightweight Single Mass Flywheel?

The key advantage of the Ninemeister 9m flywheel is its 45% reduction in weight.

Reducing rotating mass has a particularly noticeable effect because the flywheel is continuously accelerated and decelerated with the engine. With less inertia to overcome, the engine can gain and lose RPM more rapidly.

The result is a drivetrain that feels more immediate and responsive, particularly during rapid acceleration and performance driving.

Benefits include:

  • 45% weight reduction
  • Reduced rotating mass
  • Lower engine inertia
  • Quicker engine response
  • Improved throttle response
  • Faster acceleration
  • More immediate engine character
  • Reduced drivetrain power losses
  • More engine power available at the wheels

The upgrade does not create additional engine horsepower in the same way as an engine modification. Instead, reducing the energy required to accelerate the flywheel can reduce rotational losses during acceleration, allowing more of the engine's available performance to reach the wheels.

CNC Machined Forged Billet Steel Construction

The Ninemeister 9m flywheel is CNC machined from high-carbon forged billet steel, combining reduced weight with the strength required for a high-performance drivetrain application.

Precision CNC machining ensures accurate dimensions and consistent manufacture, while the forged steel construction makes this flywheel particularly well suited to the high engine speeds and performance demands associated with Porsche GT3 and GT3 RS models.

Porsche 991 / 992 GT3 & GT3 RS Lightweight Flywheel Upgrades

Lightweight drivetrain components are an effective way of improving engine response without relying solely on increasing engine output. On high-revving Porsche GT models, reducing rotating mass allows the engine to react more quickly to changes in throttle position.

A lightweight flywheel is therefore particularly suited to Porsche 991 GT3, 991 GT3 RS, 992 GT3 and 992 GT3 RS models used for enthusiastic road driving, track days and other performance-focused applications.

Unlike modifications designed purely to increase peak horsepower, reducing flywheel mass changes how quickly the engine can respond. This can make the drivetrain feel more eager and immediate, complementing the naturally responsive character of Porsche's GT3 engine.

Why Choose the Ninemeister 9m Lightweight Flywheel?

Ninemeister's 9m lightweight flywheel combines a substantial 45% reduction in weight with CNC-machined high-carbon forged billet steel construction.

For GT3 and GT3 RS owners seeking sharper throttle response, reduced inertia and quicker acceleration, it provides a direct-replacement solution designed to improve drivetrain responsiveness while retaining a high-strength steel flywheel construction.



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

9M9P1105264
99111402090
99111402091
9P1105262B
9P1105262D
9P1105262F
9P1105264C

The product you are viewing cross references to these numbers
DISPLAYING 1 to 3 (of 3 products)
About Flywheel / Torque

Porsche Flywheels & Torque Converters | Smooth Power Transfer & Engine Balance

Flywheels and torque converters are vital components in your Porsche’s drivetrain, ensuring smooth power transfer from the engine to the transmission. The flywheel provides rotational balance and stores kinetic energy for manual gear changes, while the torque converter in automatic models performs a similar role — transferring engine torque hydraulically for seamless acceleration.

At Design911, we supply precision-engineered flywheels and torque converters designed to meet or exceed original performance specifications. Each component is manufactured from high-grade materials, ensuring strength, balance, and reliability under all driving conditions. Whether you’re restoring a classic 911 or maintaining a modern PDK-equipped Porsche, our range provides the quality and performance your drivetrain demands.

What Do Flywheels & Torque Converters Do?

Both components play critical roles in the performance and drivability of your Porsche, acting as torque-transfer systems between the engine and gearbox.

Flywheels (Manual Transmissions):
Store rotational energy to maintain engine smoothness. Provide a friction surface for clutch engagement. Aid in gear transitions by balancing engine speed and torque.

Torque Converters (Automatic Transmissions):
Transfer torque through fluid dynamics between engine and gearbox. Enable smooth gear shifting without clutch operation. Multiply torque for efficient acceleration and smoother driving.

Together, they ensure seamless operation, smooth starts, and optimal power delivery from engine to transmission.

Why Do Flywheels & Torque Converters Fail or Wear Out?

Over time, both flywheels and torque converters experience wear due to high rotational forces, friction, and heat cycles.

Common Causes of Failure Include:

  • Heat damage or warping from clutch slippage (flywheels).
  • Cracked or worn ring gear teeth affecting starter engagement.
  • Fluid contamination or internal seal leaks (torque converters).
  • Bearing wear leading to vibration or imbalance.
  • Excessive torque or misalignment from modified engines.

Symptoms of failure may include clutch chatter, transmission shudder, vibration during acceleration, or slipping during gear changes. Ignoring these signs can lead to further drivetrain damage.

Why Replace your Flywheel or Torque Converter?

Replacing worn flywheels or torque converters restores smooth torque delivery, reduces vibration, and ensures reliable clutch or transmission performance. Upgraded lightweight flywheels improve throttle response, while performance torque converters enhance acceleration and drivability.

Key Benefits:

  • Restores smooth engine-to-transmission power delivery.
  • Eliminates vibration, slippage, and engagement issues.
  • Improves clutch or automatic transmission performance.
  • Balances rotational mass for smoother idling and shifting.
  • Available in lightweight or performance designs for tuned Porsches.
  • Ideal for clutch replacement, transmission rebuilds, or performance upgrades.

It’s strongly recommended to replace the flywheel or torque converter during any major clutch or gearbox service for long-term reliability and balanced performance.

Highlights

  • Premium Porsche flywheels and torque converters.
  • Precision-balanced for smooth, vibration-free operation.
  • Manufactured from high-strength, heat-treated materials.
  • Available for manual, automatic, and PDK Porsche models.
  • Enhances drivability, acceleration, and transmission longevity.
  • Essential for gearbox rebuilds, clutch services, and performance tuning.

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