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Gearbox Syncro Ring / Brake Band / Dog Teeth
Price is for one syncro ring.
Fits:
For cars with 5-Speed Manual Transmission
Porsche 911 Carrera G50 1987-89
Porsche 964 Carrera 2 G50 1989-94
Porsche 964 Carrera 4 G64 1989-94
Porsche 964 Turbo 3.3L G50 1991-92
Porsche 964 Turbo 3.6L G50 1993-94
Diagram Ref no 32
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95030431102
The product you are viewing cross references to these numbers
- Porsche 911 1987-1989 3.2L G50
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 924 2.0L 1976-79
- Porsche 924 2.0L 1980-85
- Porsche 924 Turbo 2.0L 1979-81
- Porsche 924 Turbo 2.0L 1982-84
- Porsche 924 Carrera GT 2.0L 1981
- Porsche 924 Carrera GTS 2.0L 1982
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
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12 Month Warranty
Worldwide Delivery
Express Delivery
Fits:
Porsche 924S 1986-88 Manual Transmission
Porsche 944 1986-88 Manual Transmission: 5Y 5S 5Z 7V 5P 5R UY 9U AGP AGR AOR
Porsche 944 1988-91 Manual Transmission: ASG ASH AOR AOS AOT ASV ASW
Click 'Zoom in' to see the diagram.
Diagram Ref no 8
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PCG311247
The product you are viewing cross references to these numbers
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
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12 Month Warranty
Worldwide Delivery
Express Delivery
High-quality OE Match Syncro Ring designed to replace the original 3rd/4th gear synchronizer ring in manual gearboxes used on Porsche 924S (1986–1988) and Porsche 944 (1986–1991). It enables smooth gear matching between 3rd and 4th gears during shifting, helping eliminate gear clash and improve shift quality.
Sold individually, Needs 2 per gearbox.
Fits:
Porsche 924S 1986 - 1988 Manual Transmission
Porsche 944 1986 - 1988 Manual Transmission: 5Y 5S 5Z 7V 5P 5R UY 9U AGP AGR AOR
Porsche 944 1988 - 1991 Manual Transmission: ASG ASH AOR AOS AOT ASV ASW
Diagram Ref no 8
This OE Match ring is ideal for transmission rebuilds, synchro refresh jobs, or when shifting issues are evident in the affected gears. It installs directly in place of the original ring within the transmission’s 3rd/4th synchronizer hub assembly.
The syncro ring helps match the speed of the gear to the speed of the shaft before engagement, allowing shifts into 3rd and 4th gear to occur smoothly and quietly. It bridges the difference between gears, reducing wear on dog teeth, gears, and engagement components.
Function
• Provides friction interface for speed matching between 3rd and 4th gears
• Reduces gear clash and harsh engagement
• Restores smooth shifting performance
Synchro rings wear naturally as part of normal transmission use. When they degrade, you may experience gear crunching, difficult or noisy shifts, gear hop, or faster wear on other transmission parts. Replacing them with an OE Match synchro ring restores correct shift feel, prolongs gearbox life, and helps maintain the performance and drivability expected from Porsche’s enthusiast-oriented engines.
When to replace:
• Grinding or crunching when selecting 3rd or 4th gear
• Delayed or hesitant engagement of those gears
• Transmission noise during gear changes
• During a full gearbox rebuild or synchro refresh
• Routine clutch or transmission service with high mileage
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PCG311247
The product you are viewing cross references to these numbers
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
Shop Securely
12 Month Warranty
Worldwide Delivery
Express Delivery
Fits:
Porsche 924 1980-85 Manual Transmission: VQ VR UV MD ME MF MB MX
Porsche 924S 1986-88 Manual Transmission
Porsche 944 1982-85 Manual Transmission
Porsche 944 1986-88 Manual Transmission: 5Y 5S 5Z 7V 5P 5R UY 9U AGP AGR AOR
Porsche 944 1988-91 Manual Transmission: ASG ASH AOR AOS AOT ASV ASW
Click 'Zoom in' to see the diagram.
Diagram Ref no 41
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
014311295E
The product you are viewing cross references to these numbers
- Porsche 924 2.0L 1976-79
- Porsche 924 2.0L 1980-85
- Porsche 924 Turbo 2.0L 1979-81
- Porsche 924 Turbo 2.0L 1982-84
- Porsche 924 Carrera GT 2.0L 1981
- Porsche 924 Carrera GTS 2.0L 1982
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
Shop Securely
12 Month Warranty
Worldwide Delivery
Fits:
Porsche 924 1980-85 Manual Transmission: VQ VR UV MD ME MF MB MX
Porsche 924S 1986-88 Manual Transmission
Porsche 944 1982-85 Manual Transmission
Porsche 944 1986-88 Manual Transmission: 5Y 5S 5Z 7V 5P 5R UY 9U AGP AGR AOR
Porsche 944 1988-91 Manual Transmission: ASG ASH AOR AOS AOT ASV ASW
Diagram Ref no 41
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
014311295E
The product you are viewing cross references to these numbers
- Porsche 924 2.0L 1976-79
- Porsche 924 2.0L 1980-85
- Porsche 924 Turbo 2.0L 1979-81
- Porsche 924 Turbo 2.0L 1982-84
- Porsche 924 Carrera GT 2.0L 1981
- Porsche 924 Carrera GTS 2.0L 1982
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
Shop Securely
12 Month Warranty
Worldwide Delivery
Fits:
Porsche 924 (1976 - 1985)
Porsche 924 S (1986 - 1988)
Porsche 924 Turbo (1979 - 1982)
Porsche 944 (1982 - 1985)
Porsche 944/2 (1986 - 1988)
Porsche 944 Turbo (1985 - 1991)
Porsche 944 S (1987 - 1988)
Porsche 944 S2 (1989 - 1991)
Click 'Zoom in' for large pats diagram.
Diagram ref no 8
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PCG311295
The product you are viewing cross references to these numbers
- Porsche 924 2.0L 1976-79
- Porsche 924 2.0L 1980-85
- Porsche 924 Turbo 2.0L 1979-81
- Porsche 924 Turbo 2.0L 1982-84
- Porsche 924 Carrera GT 2.0L 1981
- Porsche 924 Carrera GTS 2.0L 1982
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
Shop Securely
12 Month Warranty
Worldwide Delivery
Porsche Gearbox Synchro Rings, Brake Bands & Dog Teeth | Precision Shifting Components for Smooth Gear Engagement
Synchro rings, brake bands, and dog teeth are essential components in your Porsche’s gearbox, designed to ensure smooth, precise, and quick gear changes. These parts allow gears to match speed before engagement, preventing grinding, wear, and missed shifts — maintaining the refined driving feel expected from every Porsche.
At Design911, we supply high-quality synchro rings, brake bands, and dog teeth engineered to meet or exceed original performance specifications. Manufactured from precision-cut steel alloys and hardened friction materials, these components are built for strength, durability, and seamless operation under both road and performance driving conditions.
Whether you’re rebuilding a classic Porsche transmission, maintaining a daily driver, or preparing a track-ready gearbox, our synchro and engagement components restore smooth shifting and reliability.
What Do Synchro Rings, Brake Bands & Dog Teeth Do?
These precision-engineered parts are responsible for synchronising gear speeds and ensuring positive engagement during shifting.
Core Functions:
- Synchro
Rings: Match rotational speeds between gears before engagement.
- Brake
Bands: Control the friction needed to synchronise gears efficiently.
- Dog Teeth: Engage the synchro hub with the selected gear to complete the shift.
Together, they allow seamless transitions between gears, reducing shock loads on the gearbox and ensuring crisp, responsive shifting across all driving conditions.
Why Do Synchro Rings, Brake Bands & Dog Teeth Fail or Wear Out?
These components are subject to extreme friction, pressure, and heat with every gear change. Over time, constant use and lubrication breakdown cause material fatigue and reduced performance.
Common Causes of Failure Include:
- Friction surface wear on synchro rings due to age or low-quality lubricant.
- Deformation or breakage of dog teeth from aggressive shifting.
- Worn brake bands leading to poor gear synchronisation.
- Contaminated gearbox oil reducing friction control.
- Heat stress from performance driving or clutch drag.
When these parts wear out, symptoms include gear crunching, resistance when shifting, missed gears, or grinding noises — clear signs it’s time for replacement.
Why Replace Your Porsche Gearbox Synchro Rings, Brake Bands & Dog Teeth?
Replacing worn synchroniser components restores precise gear changes, prevents gearbox damage, and extends transmission lifespan. Upgrading to performance or reinforced designs enhances engagement speed and consistency — ideal for high-performance or track-driven Porsches.
Key Benefits:
- Restores smooth, accurate gear changes.
- Eliminates gear crunching, grinding, and engagement delay.
- Prevents gearbox wear and protects internal components.
- Ensures reliable shifting under load or high-speed driving.
- Available for Porsche 911, Cayman, Boxster, and classic models.
- Suitable for gearbox rebuilds, restorations, or performance upgrades.
During gearbox servicing, it’s highly recommended to replace synchro rings, brake bands, and dog teeth as a complete set to ensure balanced wear and consistent operation.
Highlights
- Premium Porsche synchro rings, brake bands, and dog teeth.
- Designed for smooth, precise, and durable gear engagement.
- Heat-treated and precision-machined for longevity.
- Direct-fit replacements for all Porsche gearbox types.
- Ideal for manual transmission rebuilds and performance upgrades.
- Restores shifting quality and transmission reliability.
Monday-Friday: 8.30am - 5.30pm (GMT)
Saturday: Closed
Sunday: Closed