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Gearbox Syncro Ring / Brake Band / Dog Teeth
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- Porsche 911 1965-1968 2.0L / 912 SWB (F)
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91130231608
Product Information
Genuine Porsche OE synchro brake band for 3rd, 4th and 5th gear on Porsche 911 models fitted with the 915 manual gearbox. This original Porsche gearbox synchroniser component is used inside the transmission to help control gear speed during gear changes, supporting smoother engagement and helping reduce gear clash or grinding.
3 per gearbox. *please note: these are 1/2 pieces so order 2 pcs to make one complete brake band
Fits:
Porsche 911 1974 - 1986 (915 Gearbox)
Diagram ref no 8.
The Genuine Porsche 91130231608 synchro brake band is an OE gearbox synchroniser component for 3rd, 4th and 5th gear in Porsche 911 models fitted with the 915 manual transmission. It helps control gear speed during shifting, supports smoother gear engagement and is commonly replaced during 915 gearbox rebuilds, synchro repairs or transmission restoration work.
This part fits inside the manual gearbox, within the synchroniser assembly for 3rd, 4th and 5th gears. It is not an external service item and requires gearbox disassembly for installation.
On the Porsche 915 gearbox diagram, this part is associated with the internal synchro / brake band assembly.
Functions
• Forms part of the gearbox synchroniser assembly
• Helps control and slow gear rotation during gear selection
• Supports smoother engagement of 3rd, 4th and 5th gears
• Helps reduce gear crunching, baulking or grinding during shifts
• Works with the synchro ring, dog teeth and slider components
• Helps restore correct synchroniser operation during gearbox rebuilds
• Maintains factory-correct Porsche transmission performance when fitted with matching OE gearbox components
Why Replace This Part?
The synchro brake band is a wear component inside the manual gearbox. Over time, repeated gear changes, high mileage, worn oil, aggressive shifting or previous gearbox wear can reduce its effectiveness. A worn brake band may no longer control gear speed correctly, which can lead to difficult shifting, gear crunching or poor synchroniser performance. Replacing the worn brake band with a Genuine Porsche OE synchro brake band helps restore correct synchroniser function and supports smooth, precise gear engagement in the 915 gearbox.
When to replace
• During a Porsche 915 gearbox rebuild or overhaul
• If 3rd, 4th or 5th gear engagement is difficult or notchy
• If the gearbox crunches or grinds during gear changes
• When replacing synchro rings, dog teeth or slider sleeves
• If inspection shows wear, glazing, cracking or damage
• When restoring the gearbox to original Porsche specification
• As part of preventative maintenance during transmission disassembly.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91130231608
The product you are viewing cross references to these numbers
Product Information
Synchro Brake Band 3rd / 4th / 5th gearGenuine Porsche OE synchro brake band for 3rd, 4th and 5th gear on Porsche 911 models fitted with the 915 manual gearbox. This original Porsche gearbox synchroniser component is used inside the transmission to help control gear speed during gear changes, supporting smoother engagement and helping reduce gear clash or grinding.
3 per gearbox. *please note: these are 1/2 pieces so order 2 pcs to make one complete brake band
Fits:
Porsche 911 1974 - 1986 (915 Gearbox)
Diagram ref no 8.
The Genuine Porsche 91130231608 synchro brake band is an OE gearbox synchroniser component for 3rd, 4th and 5th gear in Porsche 911 models fitted with the 915 manual transmission. It helps control gear speed during shifting, supports smoother gear engagement and is commonly replaced during 915 gearbox rebuilds, synchro repairs or transmission restoration work.
This part fits inside the manual gearbox, within the synchroniser assembly for 3rd, 4th and 5th gears. It is not an external service item and requires gearbox disassembly for installation.
On the Porsche 915 gearbox diagram, this part is associated with the internal synchro / brake band assembly.
Functions
• Forms part of the gearbox synchroniser assembly
• Helps control and slow gear rotation during gear selection
• Supports smoother engagement of 3rd, 4th and 5th gears
• Helps reduce gear crunching, baulking or grinding during shifts
• Works with the synchro ring, dog teeth and slider components
• Helps restore correct synchroniser operation during gearbox rebuilds
• Maintains factory-correct Porsche transmission performance when fitted with matching OE gearbox components
Why Replace This Part?
The synchro brake band is a wear component inside the manual gearbox. Over time, repeated gear changes, high mileage, worn oil, aggressive shifting or previous gearbox wear can reduce its effectiveness. A worn brake band may no longer control gear speed correctly, which can lead to difficult shifting, gear crunching or poor synchroniser performance. Replacing the worn brake band with a Genuine Porsche OE synchro brake band helps restore correct synchroniser function and supports smooth, precise gear engagement in the 915 gearbox.
When to replace
• During a Porsche 915 gearbox rebuild or overhaul
• If 3rd, 4th or 5th gear engagement is difficult or notchy
• If the gearbox crunches or grinds during gear changes
• When replacing synchro rings, dog teeth or slider sleeves
• If inspection shows wear, glazing, cracking or damage
• When restoring the gearbox to original Porsche specification
• As part of preventative maintenance during transmission disassembly.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91130231608
91130231608
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
Price: £14.88
In Stock - 3- 5 Days Dispatch
Shop Securely
12 Month Warranty
Worldwide Delivery
91130231608/1
Product Information
This OE Match synchro brake band is a replacement transmission synchroniser component used on Porsche 911 models fitted with the 915 gearbox. It is designed for the 3rd, 4th, and 5th gear synchroniser assembly and matches the original-style fit and function.
3 per gearbox. *please note: these are 1/2 pieces so order 2 pcs to make one complete brake band
Fits:
Porsche 911 1974 - 1986 (915 Gearbox)
Diagram ref no 8.
This brake band fits inside the 915 manual gearbox, within the synchroniser assembly for 3rd, 4th, and 5th gear. It is an internal transmission component and is accessed during gearbox disassembly or synchroniser service.
The synchro brake band works as part of the gearbox synchroniser system. During gear changes, it helps control and equalise the speed of the gear and synchroniser hub before engagement. This allows the gear to engage more smoothly and helps reduce grinding, baulking, or difficult shifting.
Functions
• Supports smooth gear engagement in the 915 gearbox
• Helps synchronise gear speed during shifting
• Reduces gear clash, grinding, and shift resistance
• Works with the synchro ring, anchor block, energiser block, and operating sleeve
• Helps restore correct shift quality in worn gearbox assemblies
• Provides an OE Match replacement for the original brake band
• Suitable for gearbox rebuilds and synchroniser repairs
Why Replace This Part?
The synchro brake band is subject to wear every time the gearbox is shifted. Over time, it can become worn, distorted, cracked, or weakened, which may lead to poor synchroniser performance. A worn brake band can contribute to grinding gears, difficult engagement, or a notchy shift feel, especially in higher gears. Replacing it during gearbox service helps restore smoother gear changes and supports long-term transmission reliability.
When to Replace:
• The gearbox is grinding when selecting 3rd, 4th, or 5th gear
• Gear changes feel notchy, stiff, or difficult
• The transmission baulks or resists engagement
• The 915 gearbox is being rebuilt or inspected
• The synchroniser ring or operating sleeve is being replaced
• The brake band is worn, cracked, bent, or damaged
• There is excessive wear in the synchroniser assembly
• As preventative replacement during a full gearbox overhaul
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91130231608
The product you are viewing cross references to these numbers
Product Information
Synchro Brake Band 3rd / 4th / 5th gearThis OE Match synchro brake band is a replacement transmission synchroniser component used on Porsche 911 models fitted with the 915 gearbox. It is designed for the 3rd, 4th, and 5th gear synchroniser assembly and matches the original-style fit and function.
3 per gearbox. *please note: these are 1/2 pieces so order 2 pcs to make one complete brake band
Fits:
Porsche 911 1974 - 1986 (915 Gearbox)
Diagram ref no 8.
This brake band fits inside the 915 manual gearbox, within the synchroniser assembly for 3rd, 4th, and 5th gear. It is an internal transmission component and is accessed during gearbox disassembly or synchroniser service.
The synchro brake band works as part of the gearbox synchroniser system. During gear changes, it helps control and equalise the speed of the gear and synchroniser hub before engagement. This allows the gear to engage more smoothly and helps reduce grinding, baulking, or difficult shifting.
Functions
• Supports smooth gear engagement in the 915 gearbox
• Helps synchronise gear speed during shifting
• Reduces gear clash, grinding, and shift resistance
• Works with the synchro ring, anchor block, energiser block, and operating sleeve
• Helps restore correct shift quality in worn gearbox assemblies
• Provides an OE Match replacement for the original brake band
• Suitable for gearbox rebuilds and synchroniser repairs
Why Replace This Part?
The synchro brake band is subject to wear every time the gearbox is shifted. Over time, it can become worn, distorted, cracked, or weakened, which may lead to poor synchroniser performance. A worn brake band can contribute to grinding gears, difficult engagement, or a notchy shift feel, especially in higher gears. Replacing it during gearbox service helps restore smoother gear changes and supports long-term transmission reliability.
When to Replace:
• The gearbox is grinding when selecting 3rd, 4th, or 5th gear
• Gear changes feel notchy, stiff, or difficult
• The transmission baulks or resists engagement
• The 915 gearbox is being rebuilt or inspected
• The synchroniser ring or operating sleeve is being replaced
• The brake band is worn, cracked, bent, or damaged
• There is excessive wear in the synchroniser assembly
• As preventative replacement during a full gearbox overhaul
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91130231608
91130231608
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
Price: £9.66
In Stock - 24 Hour Dispatch
Shop Securely
12 Month Warranty
Worldwide Delivery
92830421010/1
Product Information
This OE Match synchroniser ring is a direct-fit replacement for the 1st/2nd gear synchro teeth in Porsche G50 (or G-series) manual transmissions. It is built to the correct dimensions, materials, and tolerances for reliable gear engagement and longevity.
Fits:
Porsche 911 / 964 / 965 (1987 - 1994) - G50 - 1st - 2nd Gear
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92830421010
The product you are viewing cross references to these numbers
Product Information
G50 Transmission synchroniser ring for 1st – 2nd gear.This OE Match synchroniser ring is a direct-fit replacement for the 1st/2nd gear synchro teeth in Porsche G50 (or G-series) manual transmissions. It is built to the correct dimensions, materials, and tolerances for reliable gear engagement and longevity.
Fits:
Porsche 911 / 964 / 965 (1987 - 1994) - G50 - 1st - 2nd Gear
Related reference numbers
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92830421010
92830421010
31309626
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Vehicle Group
Vehicle Group
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
Price: £99.00
In Stock - 24 Hour Dispatch
Shop Securely
12 Month Warranty
Worldwide Delivery
95030403131
Product Information
5-Speed Manual Transmission ONLY!
Pressure Springs, Balls And Thrust Piece Included.
Fits:
Porsche 911 1987>>1989
Porsche 959 1987>>1988
Porsche 964 Carrera 2/4 1989>>1994
Diagram Ref No 33 (Diagram Ref No 11, 34 And 35 Included)
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95030403131
The product you are viewing cross references to these numbers
Product Information
Synchro Hub With Locking Collar, Manual Transmission 5-Speed, Gears 1/2.5-Speed Manual Transmission ONLY!
Pressure Springs, Balls And Thrust Piece Included.
Fits:
Porsche 911 1987>>1989
Porsche 959 1987>>1988
Porsche 964 Carrera 2/4 1989>>1994
Diagram Ref No 33 (Diagram Ref No 11, 34 And 35 Included)
Related reference numbers
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95030403131
95030403131
95030403103
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Vehicle Group
Vehicle Group
- Porsche 911 1987-1989 3.2L G50
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
Price: £974.33
Orderable - 22 to 28 Days
Shop Securely
12 Month Warranty
Worldwide Delivery
91530230113/1
Product Information
The OE Match 1st Gear Synchro Ring is a high-quality replacement transmission component designed to facilitate smooth and precise engagement of first gear in Porsche manual gearboxes. Manufactured to OE specifications for fit, accuracy and durability, this synchroniser ring forms a critical part of the gearbox synchronisation system, helping to match gear and shaft speeds before engagement occurs.
Fits:
Diagram Ref No 39
Working alongside the synchroniser hub, dog teeth and selector sleeve, the synchro ring reduces speed differences between rotating gearbox components, allowing gears to engage smoothly without excessive noise, grinding or wear. Precision engineering ensures reliable operation and helps maintain the shift quality expected from a Porsche transmission.
What This Product Does:
Symptoms Of Wear Or Failure:
Why Replacement Matters:
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91530230113
The product you are viewing cross references to these numbers
Product Information
Synchro Ring 1st Gear. The OE Match 1st Gear Synchro Ring is a high-quality replacement transmission component designed to facilitate smooth and precise engagement of first gear in Porsche manual gearboxes. Manufactured to OE specifications for fit, accuracy and durability, this synchroniser ring forms a critical part of the gearbox synchronisation system, helping to match gear and shaft speeds before engagement occurs.
Fits:
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
Diagram Ref No 39
Working alongside the synchroniser hub, dog teeth and selector sleeve, the synchro ring reduces speed differences between rotating gearbox components, allowing gears to engage smoothly without excessive noise, grinding or wear. Precision engineering ensures reliable operation and helps maintain the shift quality expected from a Porsche transmission.
What This Product Does:
- Synchronises rotational speeds before first gear engagement.
- Helps ensure smooth and precise gear changes.
- Reduces gear clash and grinding during shifting.
- Works with the synchroniser assembly and dog teeth.
- Improves transmission shift quality and drivability.
- Minimises wear on gearbox engagement components.
- Supports reliable operation of the manual transmission.
Symptoms Of Wear Or Failure:
- Difficulty selecting first gear.
- Gear grinding or crunching during engagement.
- Increased resistance when shifting into first gear.
- Notchy or inconsistent gear changes.
- Requirement to force the gear lever into position.
- Excessive gearbox noise during shifting.
- Premature wear of dog teeth and related synchroniser components.
- Poor shift quality, particularly when the gearbox is cold.
Why Replacement Matters:
- Synchroniser rings are subjected to constant friction and wear every time a gear is selected. Over time, the friction surfaces can wear down, reducing their ability to equalise rotational speeds effectively before gear engagement. This can lead to difficult gear selection, increased transmission noise and accelerated wear of surrounding gearbox components.
- A worn synchro ring can place additional strain on dog teeth, selector sleeves and synchroniser hubs, potentially leading to more extensive and expensive gearbox repairs if left unresolved. Poor synchronisation can also diminish driving enjoyment and compromise the smooth operation of the transmission.
- Replacing a worn first gear synchro ring restores proper synchronisation, improves shift quality and helps protect the transmission from further internal wear. An OE Match replacement provides factory-style fitment, precision manufacturing and long-term durability, ensuring smooth and reliable gearbox performance for your Porsche.
Related reference numbers
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91530230113
15455
91530230106
91530230113
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
Price: £90.00
Due In 5 Days
Shop Securely
12 Month Warranty
Worldwide Delivery
93030230100
Product Information
Fits:
Porsche 911 Turbo 1975-88 4 speed
Click 'Zoom in' to see the diagram.
Diagram Ref no 41.
Related reference numbers
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93030230100
The product you are viewing cross references to these numbers
Product Information
Synchro ring 1st/2nd gear Fits:
Porsche 911 Turbo 1975-88 4 speed
Click 'Zoom in' to see the diagram.
Diagram Ref no 41.
Related reference numbers
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93030230100
93030230100
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
Price: £172.45
Orderable - 14 to 28 Days
Shop Securely
12 Month Warranty
Worldwide Delivery
91530230114
Product Information
Fits:
Porsche 911 1974-86 (915 Gearbox)
Click "Zoom in" to see the diagram.
Diagram Ref no 39.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91530230114
The product you are viewing cross references to these numbers
Product Information
Synchro Ring 2nd Gear.Fits:
Porsche 911 1974-86 (915 Gearbox)
Click "Zoom in" to see the diagram.
Diagram Ref no 39.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91530230114
91530230104
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
Price: £141.87
In Stock - 24 Hour Dispatch
Shop Securely
12 Month Warranty
Worldwide Delivery
91530230114/1
Product Information
This synchroniser ring that fits into the 915 gearbox of a Porsche 911. Its role is to match the rotational speed of a gear to the shaft before the dog teeth engage, enabling grind-free shifting, especially into 2nd gear.
Fits:
Porsche 911 2nd Gear Only 1974 - 1986 (915 Trans.)
Porsche 912E 1st-2nd Gears 1972 - 1976
Diagram Ref no 39.
• Function: The synchroniser ring helps match the speed of the transmission shaft and gear before engagement, enabling smooth shifting without gear clash.
• Position: Located inside the 915 manual gearbox, specifically associated with 1st/2nd gear synchronising assembly (diagram ref no 39)
• Benefit: Restores precise gear changes, reduces shifting effort, prevents gearbox noise or damage
Over time, the synchroniser ring’s friction surfaces wear, reducing its ability to align gear speeds. This can lead to gear grinding, difficulty selecting 2nd gear, or “pop-out” under load.
When to replaces:
• During a gearbox overhaul or rebuild of a 915 transmission.
• If you experience gear grinding, hard 2nd gear shifts, or gear pop-out.
• When you’re replacing other major gearbox components - installing a new synchro ring ensures correct engagement and long transmission life.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91530230114
The product you are viewing cross references to these numbers
Product Information
Synchro ring 2nd gear, for 915 Gearbox.This synchroniser ring that fits into the 915 gearbox of a Porsche 911. Its role is to match the rotational speed of a gear to the shaft before the dog teeth engage, enabling grind-free shifting, especially into 2nd gear.
Fits:
Porsche 911 2nd Gear Only 1974 - 1986 (915 Trans.)
Porsche 912E 1st-2nd Gears 1972 - 1976
Diagram Ref no 39.
• Function: The synchroniser ring helps match the speed of the transmission shaft and gear before engagement, enabling smooth shifting without gear clash.
• Position: Located inside the 915 manual gearbox, specifically associated with 1st/2nd gear synchronising assembly (diagram ref no 39)
• Benefit: Restores precise gear changes, reduces shifting effort, prevents gearbox noise or damage
Over time, the synchroniser ring’s friction surfaces wear, reducing its ability to align gear speeds. This can lead to gear grinding, difficulty selecting 2nd gear, or “pop-out” under load.
When to replaces:
• During a gearbox overhaul or rebuild of a 915 transmission.
• If you experience gear grinding, hard 2nd gear shifts, or gear pop-out.
• When you’re replacing other major gearbox components - installing a new synchro ring ensures correct engagement and long transmission life.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91530230114
91530230104
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
Price: £77.36
In Stock - 24 Hour Dispatch
Shop Securely
12 Month Warranty
Worldwide Delivery
91130230113/1
Product Information
The OE Match Synchro Ring is a high-quality replacement transmission component designed for use in 3rd, 4th and 5th gear positions within Porsche manual gearboxes. Manufactured to OE specifications for fit, precision and durability, this synchroniser ring plays a critical role in ensuring smooth and accurate gear changes by matching gear and shaft speeds before engagement.
Fits:
Diagram Ref No 10
Working in conjunction with the synchroniser hub, selector sleeve and dog teeth, the synchro ring uses friction to equalise rotational speeds between transmission components, allowing gears to engage smoothly and reducing wear on the gearbox. Three synchro rings are typically required per gearbox, one for each applicable gear position.
What This Product Does:
Symptoms Of Wear Or Failure:
Why Replacement Matters:
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91130230113
The product you are viewing cross references to these numbers
Product Information
Synchro Ring 3rd / 4th / 5th Gear. (3 Per Gearbox)The OE Match Synchro Ring is a high-quality replacement transmission component designed for use in 3rd, 4th and 5th gear positions within Porsche manual gearboxes. Manufactured to OE specifications for fit, precision and durability, this synchroniser ring plays a critical role in ensuring smooth and accurate gear changes by matching gear and shaft speeds before engagement.
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
- Porsche 911 1984-1986 3.2L
- Porsche 914 (1970-1976)
Diagram Ref No 10
Working in conjunction with the synchroniser hub, selector sleeve and dog teeth, the synchro ring uses friction to equalise rotational speeds between transmission components, allowing gears to engage smoothly and reducing wear on the gearbox. Three synchro rings are typically required per gearbox, one for each applicable gear position.
What This Product Does:
- Synchronises gear and shaft speeds before engagement.
- Enables smooth selection of 3rd, 4th and 5th gears.
- Reduces gear clash and grinding during shifting.
- Works with the synchroniser assembly and dog teeth.
- Improves gearbox shift quality and drivability.
- Minimises wear on transmission engagement components.
- Supports reliable and efficient manual gearbox operation.
Symptoms Of Wear Or Failure:
- Difficulty engaging 3rd, 4th or 5th gear.
- Gear grinding or crunching during gear changes.
- Increased resistance when shifting.
- Notchy, inconsistent or rough gear engagement.
- Requirement to force the gear lever into gear.
- Excessive transmission noise during shifting.
- Poor shift quality, especially at higher engine speeds.
- Accelerated wear of dog teeth, selector sleeves and related components.
Why Replacement Matters:
- Synchroniser rings are wear items that experience friction every time a gear is selected. Over time, the friction surfaces wear down, reducing their ability to equalise gear speeds before engagement. This can result in difficult gear selection, noisy shifts and increased wear throughout the transmission.
- A worn synchro ring places additional stress on dog teeth, selector sleeves and synchroniser hubs, potentially leading to more extensive gearbox damage and expensive repairs if left unattended. Reduced synchronisation can also detract from driving enjoyment and compromise the smooth operation expected from a Porsche manual transmission.
- Replacing worn synchro rings restores proper synchronisation, improves gear change quality and helps protect other internal gearbox components from premature wear. An OE Match replacement provides factory-style fitment, precision manufacturing and long-term durability, ensuring dependable transmission performance and smooth gear engagement.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91130230113
13619
91130230106
91130230113
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- 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
- Porsche 911 1984-1986 3.2L
- Porsche 914 (1970-1976)
Price: £63.00
Stock Due - No Delivery Date
Shop Securely
12 Month Warranty
Worldwide Delivery
93030230300
Product Information
Fits:
Porsche 911 Turbo 1975-88 4 speed
Click "Zoom in" to see the diagram.
Diagram Ref no 12.
Related reference numbers
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93030230300
The product you are viewing cross references to these numbers
Product Information
Synchro ring 3rd/4th gear, for 4 speed gearbox. Fits:
Porsche 911 Turbo 1975-88 4 speed
Click "Zoom in" to see the diagram.
Diagram Ref no 12.
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93030230300
93030230300
16961
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
Price: £236.85
Orderable - 14 to 28 Days
Shop Securely
12 Month Warranty
Worldwide Delivery
92530230102
Product Information
Sold each.
Fits:
Porsche 911 1969-70 SPM
Porsche 911 1972-83 SPM
Porsche 914 (916-6:SPM) 1970-76
Click 'Zoom in' for large parts diagram.
Diagram ref no 10
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92530230102
The product you are viewing cross references to these numbers
Product Information
Synchronizer ring for 1st - 4th gear.Sold each.
Fits:
Porsche 911 1969-70 SPM
Porsche 911 1972-83 SPM
Porsche 914 (916-6:SPM) 1970-76
Click 'Zoom in' for large parts diagram.
Diagram ref no 10
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92530230102
92530230102
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- 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
- Porsche 914 (1970-1976)
Price: £99.15
Orderable - 14 to 28 Days
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12 Month Warranty
Worldwide Delivery
92830231801
Product Information
Fits:
Porsche 911 1974-86 (915 Gearbox)
Click 'Zoom in' to see the diagram.
Diagram ref no 39
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92830231801
The product you are viewing cross references to these numbers
Product Information
Syncro brake band 2nd gear.Fits:
Porsche 911 1974-86 (915 Gearbox)
Click 'Zoom in' to see the diagram.
Diagram ref no 39
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92830231801
92830231802
92830231801
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
Price: £58.57
Orderable - 14 to 28 Days
Shop Securely
12 Month Warranty
Worldwide Delivery
92830420910/1
Product Information
Fits:
Porsche 911 / 964 / 965 (87-94) - G50 - 3rd - 5th Gear
Manual transmission
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Related, superseded, cross reference or alternative numbers for comparison.
92830420910
The product you are viewing cross references to these numbers
Product Information
G50 Transmission syncroniser ring for 3rd - 5th gear.| Synchro Gear Teeth 911 1987-94 3rd-5th Gears |
Fits:
Porsche 911 / 964 / 965 (87-94) - G50 - 3rd - 5th Gear
Manual transmission
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Related, superseded, cross reference or alternative numbers for comparison.
92830420910
92830420910
31309625
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Vehicle Group
Vehicle Group
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
Price: £112.14
In Stock - 24 Hour Dispatch
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12 Month Warranty
Worldwide Delivery
93030230100/1
Product Information
Fits:
Porsche 911 Turbo 1975-88 4 speed
Diagram Ref no 41.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
93030230100
The product you are viewing cross references to these numbers
Product Information
Syncro ring 1st / 2nd gear.Fits:
Porsche 911 Turbo 1975-88 4 speed
Diagram Ref no 41.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
93030230100
16960
93030230100
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
Price: £98.00
Orderable - 25 to 42 Days
Shop Securely
12 Month Warranty
Worldwide Delivery
91530230113
Product Information
Fits:
Porsche 911 1974-86 (915 Gearbox)
Click 'Zoom in' to see the diagram.
Diagram Ref no 39.
Price is for each.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91530230113
The product you are viewing cross references to these numbers
Product Information
Syncro Ring 1st Gear.Fits:
Porsche 911 1974-86 (915 Gearbox)
Click 'Zoom in' to see the diagram.
Diagram Ref no 39.
Price is for each.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91530230113
91530230106
91530230113
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
Price: £141.63
In Stock - 24 Hour Dispatch
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12 Month Warranty
Worldwide Delivery
95030431102/1
Product Information
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
Product Information
Syncro ring 1st/2nd Gear. 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
17870
95030431102
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- 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
Price: £99.00
In Stock - 3- 5 Days Dispatch
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12 Month Warranty
Worldwide Delivery
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About Gearbox Syncro Ring / Brake Band / Dog Teeth
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.
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