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Porsche > 911 & 912 (1965-1989) > 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F) > Gearbox / Transmission >

Flywheel / Torque

Flywheel / Torque

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DISPLAYING 1 to 8 (of 8 products)
Clutch & Flywheel kit. Porsche 911 SC 1972-86 915 Clutch Plate, Pressure Plate & Release Bearing - 91511691100, 1878005583, 3000506001, 3082087031, 3151012031, 4200080060
2
Clutch & Flywheel kit. Porsche 911 SC 1972-86 915 Clutch Plate, Pressure Plate & Release Bearing
CLUTCHKIT915.2
Product Information
Product Information
Clutch & Flywheel kit. Porsche 911 SC 1972-86 915 Clutch Plate, Pressure Plate & Release Bearing
Clutch plate, Pressure Plate and Release bearing.

sachs Clutch kit

Fits:
Porsche 911 2.4L / 2.7L / 3.0L / 3.2L 1972-86 (915)




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Related, superseded, cross reference or alternative numbers for comparison.

CLUTCHKIT915.2
91511691100
1878005583
3000506001
3082087031
3151012031
4200080060

The product you are viewing cross references to these numbers
Clutch support. Porsche 911 72-73 Sportomatic - 92511602001
3
Clutch support. Porsche 911 72-73 Sportomatic
Special Order item
92511602001
Product Information
Product Information
Free wheel lock.

porsche

Fits:
Porsche 911 T-E/E/S /Carrera 2.7 1972-73 Sportomatic (TYP 925)
Porsche 911 1974-83 Sportomatic (TYP 925)

Click 'Zoom in' for large parts diagram.
Diagram ref no 16

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Related, superseded, cross reference or alternative numbers for comparison.

92511602001
92511602001

The product you are viewing cross references to these numbers
Flywheel for clutch, 225 mm. Porsche 911 1970-77 - 91110220112, 91110220111, 9111022011 - FW003
2
Flywheel for clutch, 225 mm. Porsche 911 1970-77
91110220112/1
Product Information
Product Information
Flywheel For Clutch, 225 mm.
The OE Match Flywheel for Clutch, 225 mm is a precision-engineered replacement drivetrain component designed to transfer engine power efficiently to the clutch assembly and transmission. Manufactured to OE specifications for fit, balance and durability, this flywheel provides the correct friction surface for clutch operation while helping to smooth engine power delivery and reduce drivetrain vibration.  

Fits:
  • Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
  • Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
  • Porsche 911 1978-1983 3.0L / SC  

Machined from high-quality materials to ensure strength and long service life, the flywheel acts as a rotating mass attached to the crankshaft, storing kinetic energy and providing a stable platform for clutch engagement. Its 225 mm clutch contact surface is designed to maintain factory performance characteristics and reliable operation.  

What This Product Does:
  • Transfers engine torque to the clutch and transmission.
  • Provides the friction surface for clutch engagement.
  • Stores rotational energy to smooth engine operation.
  • Helps maintain stable engine idle characteristics.
  • Reduces drivetrain vibration and harshness.
  • Supports smooth gear changes and clutch performance.
  • Contributes to efficient power delivery and drivability.

Symptoms Of Wear Or Failure:
  • Clutch shudder or judder during take-off.
  • Excessive vibration through the drivetrain.
  • Difficulty achieving smooth clutch engagement.
  • Hot spots or scoring on the flywheel surface.
  • Premature clutch wear.
  • Burning clutch odours during operation.
  • Rattling or knocking noises from the bellhousing area.
  • Warped clutch friction surface.
  • Uneven clutch pedal feel or engagement characteristics.
  • Reduced overall driving refinement.

Why Replacement Matters:

  • The flywheel is subjected to continuous engine torque, clutch friction and repeated heat cycles throughout its service life. Over time, the friction surface can become worn, heat-damaged, cracked or warped, affecting clutch performance and overall drivability.
  • A damaged flywheel can lead to clutch vibration, poor engagement characteristics and accelerated wear of the clutch disc and pressure plate. Installing a new clutch on a worn flywheel may result in reduced clutch lifespan and continued drivability issues. In severe cases, excessive wear or damage can compromise drivetrain reliability and increase repair costs.
  • Replacing a worn flywheel restores smooth clutch operation, improves gear engagement and helps maximise the performance and longevity of the clutch system. An OE Match replacement provides factory-style fitment, precise balancing and durable construction, ensuring dependable operation and preserving the driving experience expected from your Porsche.



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

91110220112
91110220112
91110220111
9111022011

The product you are viewing cross references to these numbers
Flywheel light weight, 225mm. Porsche 911 1970-77 - 91110220112, 91110220111 - FW003c
3
Flywheel light weight, 225mm. Porsche 911 1970-77
91110220112/2
Product Information
Product Information
Lightweight Clutch Flywheel, 225mm 3.9KG.
OE Match lightweight clutch flywheel engineered as a direct-fit replacement for the original factory flywheel on early Porsche 911 models equipped with a 225 mm clutch (typically 911/912 engines 1970–1977)

Fits:
Porsche 911 1970 - 1977

Diagram ref no 3

Lightweight flywheels are popular upgrades because they allow the engine to rev more freely and respond more quickly to throttle inputs - a benefit especially appreciated in spirited road use and track applications. The 225 mm diameter and bolt pattern ensure compatibility with standard 911 clutch kits, pressure plates, and housings designed for this generation.

Despite its reduced mass, this OE Match version maintains the structural integrity required for everyday driving and performance use, utilizing materials and manufacturing methods that align with Porsche engineering intent.

The lightweight clutch flywheel stores rotational energy and provides the mounting surface for the clutch pressure plate and friction disc. By reducing mass compared to heavier stock units, it lowers rotational inertia, which helps the engine accelerate more quickly and improves engine responsiveness.

Function:
When installed between the engine crankshaft and clutch assembly, this flywheel:
•  Reduces rotational mass compared to standard flywheels
•  Improves throttle response and engine rev-up behaviour
•  Supports consistent clutch engagement and release
•   Works with standard clutch disc and pressure plate assemblies .
he flywheel interface ensures proper alignment with the crank flange and provides the correct surface for the clutch friction disc to engage, which is critical for smooth power transfer and drivability.

Over time, original flywheels can become warped, worn, or damaged due to heat cycles, clutch slippage, or long-term use. A compromised flywheel can lead to uneven clutch engagement, noise, or vibration. Installing a new OE Match lightweight flywheel restores correct rotational dynamics and engagement surfaces, while the reduced mass enhances throttle responsiveness and engine feel.

When to replace:
•  Clutch disc replacement or driveability issues
•  Flywheel scoring, heat glazing, or warping
•  Upgrading for improved throttle response
•  Transmission service requiring flywheel removal
•  Preventive refresh on high-mile engines

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

91110220112
91110220112
91110220111

The product you are viewing cross references to these numbers
Flywheel spigot bearing. Porsche 911 Upto 1979 - 90110202501
3
Flywheel spigot bearing. Porsche 911 Upto 1979
Special Order item
90110202501
Product Information
Product Information
Flywheel spigot bearing.

porsche

Fits:
Porsche 911 (901 Gearbox)
Porsche 911 upto 1979 (915 Gearbox)

Click 'Zoom in' for large parts diagram.
Diagram ref no. 4

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

90110202501
90110202501

The product you are viewing cross references to these numbers
Flywheel spigot bearing. Porsche 911 Upto 1979 - 90110202501
3
Flywheel spigot bearing. Porsche 911 Upto 1979
90110202501/1
Product Information
Product Information
Flywheel Spigot Bearing.
The OE Match Flywheel Spigot Bearing also known as a pilot bearing, is a precision-engineered replacement drivetrain component designed to support and align the gearbox input shaft within the flywheel or crankshaft assembly. Manufactured to OE specifications for fit, performance and durability, this small but critical bearing helps ensure smooth clutch operation, accurate gearbox alignment and reliable transmission performance.  

Fits:
  • Porsche 911 1965-1968 2.0L / 912 SWB (F)
  • Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
  • Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
  • Porsche 911 1978-1983 3.0L / SC  

Diagram Ref No 4

Constructed from high-quality bearing materials and engineered to withstand continuous rotational forces, vibration and temperature fluctuations, the spigot bearing reduces friction between the engine and transmission assemblies. Proper operation of this component is essential for smooth gear changes and long-term drivetrain reliability.  

What This Product Does:
  • Supports and centres the gearbox input shaft.
  • Maintains correct alignment between the engine and transmission.
  • Reduces friction between rotating drivetrain components.
  • Allows smooth rotation of the transmission input shaft.
  • Helps ensure smooth clutch engagement and disengagement.
  • Minimises wear on gearbox and clutch components.
  • Contributes to reliable drivetrain operation and longevity.

Symptoms Of Wear Or Failure:
  • Squealing, whining or grinding noises from the bellhousing area.
  • Noise that changes when the clutch pedal is operated.
  • Difficulty engaging gears, particularly first or reverse.
  • Transmission input shaft vibration.
  • Clutch drag or incomplete clutch disengagement.
  • Rough or inconsistent gear changes.
  • Excessive wear on the clutch disc or gearbox input shaft.
  • Increased drivetrain vibration.
  • Premature wear of associated transmission components.

Why Replacement Matters:

  • The flywheel spigot bearing operates continuously whenever the engine is running and plays a vital role in maintaining proper alignment between the engine and gearbox. Over time, bearing surfaces can wear, lubrication can deteriorate and contamination may affect bearing performance, leading to increased friction and misalignment.
  • A worn spigot bearing can cause difficult gear selection, clutch disengagement issues and accelerated wear of the gearbox input shaft and clutch components. If left unresolved, bearing failure may lead to costly transmission repairs and reduced drivetrain reliability.
  • Replacing a worn flywheel spigot bearing restores proper gearbox alignment, improves clutch and transmission operation and helps protect surrounding drivetrain components from premature wear. An OE Match replacement provides factory-style fitment, precision manufacturing and dependable long-term durability, ensuring smooth performance and reliable operation for your Porsche.



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

90110202501
90110202501

The product you are viewing cross references to these numbers
Lightweight steel flywheel 225mm 6 Bolt. Porsche 911 1970-77 - 106403-12, 91110220111, 91110220112
3
Lightweight steel flywheel 225mm 6 Bolt. Porsche 911 1970-77
106403-12
Product Information
Product Information
Lightweight Steel Flywheel.
225mm / 6 bolt / 7.4lbs

Fits:
Porsche 911 2.2L / 2.4L / 2.7L 1970-77

Porsche equivalent number: 91110220111

Features:
• Light-weight for improved performance and drastically reduced M.O.I. (Moment of Inertia)
• OEM clutches bolt on for easy installation
• High tolerance manufacturing to insure a perfect hassle free installation
• Designed for normal street use for every day performance enthusiasts
• Stepped dowel pins so they are held captive by the clutch cover
• Racing parts available for the professional
• Highest quality materials for the flywheel like treated steel and OEM quality starter ring gears
• CAD designed/ CNC machined in house for the ultimate in quality control
• One year limited warranty on production components

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

106403-12
106403-12
91110220111
91110220112

The product you are viewing cross references to these numbers
Sportomatic Gearbox Shaft Sealing Ring. Porsche 911 1965-83 / 914 - 99911318940
3
Sportomatic Gearbox Shaft Sealing Ring. Porsche 911 1965-83 / 914
Special Order item
99911318940
Product Information
Product Information
Sportomatic Gearbox Shaft Sealing Ring.
45 x 60 x 7

porsche

Fits:
Porsche 911 1965-83
Porsche 914 1970-76

Click 'Zoom in' for large parts diagram.
Diagram ref no 19

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

99911318940
99911318940

The product you are viewing cross references to these numbers
DISPLAYING 1 to 8 (of 8 products)
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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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