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Original Porsche Part Genuine Porsche part 92830422105

Code: 92830422105

Genuine Porsche part

Original Porsche Part

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• This part is brand new and unused.
• Please verify that it is 100% suitable for your specific vehicle before purchase to ensure compatibility.

Before purchasing thoroughly check part to confirm compatibility.

Related products

Syncro ring. Porsche 911 1987-89 G50 (5 speed gearbox)

92830421105/1

Product Information

Synchro Ring – G50 5-Speed Gearbox

Restore the precise gear changes your Porsche was engineered to deliver with this OE Match Synchro Ring for the Porsche 911 G50 5-speed manual gearbox (1987-1989). Manufactured to replicate the original factory specification, this is precision engineered to provide smooth, accurate synchronisation between gears, helping eliminate gear clash and restore crisp shifting performance.

Fits:

Porsche 911 1987-1989 3.2L G50
Porsche 911 1989 3.3L Turbo G50

Diagram Ref no 7

Designed for use during gearbox rebuilds or transmission repairs, this OE Match synchroniser ring is manufactured from high-quality materials to ensure consistent friction characteristics, long service life and reliable operation. Whether you're restoring a road car or rebuilding a performance transmission, this component helps return your G50 gearbox to factory-level performance.

What Does a Synchro Ring Do?

The synchro ring (synchroniser ring) is one of the most important wear components inside a manual gearbox.

Its primary functions include:
Synchronising the rotational speed of the selected gear and gearbox shaft before engagement.

Allowing smooth gear changes without grinding.
Reducing wear on the gear teeth, hubs and selector sleeves.
Improving shift quality and driver confidence.
Helping protect expensive gearbox components from premature wear.
Delivering the precise gear engagement expected from the Porsche G50 transmission.

Without a correctly functioning synchro ring, gears cannot engage smoothly, resulting in poor shift quality and increased gearbox wear.

Why Do Synchro Rings Wear Out?

Synchroniser rings are designed as sacrificial wear components and naturally deteriorate over time.

Common causes of wear include:

High mileage.
Frequent gear changes during normal driving.
Aggressive or high-performance driving.
Poor shifting technique.
Contaminated or degraded gearbox oil.
Excessive transmission temperatures.
Wear to associated synchroniser hubs and selector sleeves.

As the friction material wears, the synchroniser becomes less effective at matching gear speeds, making gear engagement progressively more difficult.

When Should the Synchro Ring Be Replaced?

Replacement is recommended when:

Gear changes become difficult or notchy.
Gears grind or crunch during selection.
The gearbox is stripped for overhaul.
The synchroniser ring shows visible wear or damage.
Replacing selector hubs, sleeves or bearings.
Restoring a high-mileage G50 gearbox.
Building a performance or competition transmission.

As gearbox disassembly is required, it is considered best practice to replace all worn synchroniser components during a rebuild.

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

92830421105

313096270322

313 09 627 03 22

92830421105

The product you are viewing cross references to these numbers

Syncro ring. Porsche 928 1985-95

92830421105/1::1

Product Information

Synchro Ring – 3rd / 4th / 5th & Reverse Gear

Restore the smooth, precise gear changes your Porsche was engineered to deliver with this OE Match Synchro Ring for the Porsche 928 5-speed manual gearbox. Manufactured to the original factory specification, this helps to restore crisp gear engagement while reducing wear on the transmission's synchronising components.

Fits:

Porsche 928S2 4.7L 1984-86
Porsche 928S4 5.0L 1987-92
Porsche 928GT 5.0L 1989-91
Porsche 928GTS 5.4L 1992-95

Diagram Ref no 7

Precision manufactured from high-quality materials, this synchroniser ring delivers consistent friction characteristics for reliable synchronisation between the selected gear and gearbox shaft. Whether you're carrying out a complete gearbox rebuild or replacing worn synchroniser components, this OE Match synchro ring provides factory-style fit, performance and durability.

What Does the Synchro Ring Do?

The synchro ring is a vital component within the manual gearbox synchroniser assembly.

Its primary functions include:

Synchronising the speed of the selected gear and gearbox shaft before engagement.
Allowing smooth gear changes without grinding or gear clash.
Reducing wear on gears, selector sleeves and synchroniser hubs.
Providing smooth, positive gear engagement.
Protecting expensive internal gearbox components.
Maintaining the refined shifting characteristics of the Porsche 928 transmission.

A correctly functioning synchro ring ensures each gear engages smoothly with minimal effort.

Why Do Synchro Rings Wear Out?

Synchroniser rings are designed as service wear components and naturally deteriorate through use.

Common causes of wear include:

High mileage.
Repeated gear changes during everyday driving.
Aggressive shifting or performance driving.
Worn or contaminated gearbox oil.
Excessive gearbox temperatures.
General fatigue of the synchroniser friction surfaces.
Wear to associated hubs and selector sleeves.

As the friction surface wears, the synchroniser becomes less effective at matching gear speeds, resulting in increasingly difficult or noisy gear changes.

When Should the Synchro Ring Be Replaced?

Replacement is recommended when:

Gear selection becomes difficult.
Grinding or crunching occurs during gear changes.
The gearbox is being rebuilt.
Inspection reveals worn or damaged synchroniser rings.
Replacing synchroniser hubs, selector sleeves or bearings.
Restoring a high-mileage transmission.
Building a performance or competition gearbox.

Because gearbox disassembly is required, replacing all worn synchroniser components during a rebuild is considered best practice.

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

92830421105

313 09 627 03 22

313096270322

92830421105

The product you are viewing cross references to these numbers

Syncro ring. Porsche 964 1989-94

92830421105/1::2

Product Information

Synchro Ring – 3rd / 4th / 5th & Reverse Gear
Sold each - 4 required per car

Restore the smooth, precise gear changes your Porsche was designed to deliver with this OE Match Synchro Ring for the Porsche 964 manual gearbox. Manufactured to the original factory specification, this helps provide accurate synchronisation and helping restore crisp, positive gear engagement.

Fits:

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

Diagram Ref no 7

Each Porsche 964 manual gearbox uses four of these synchroniser rings, one for 3rd gear, 4th gear, 5th gear and reverse gear. Whether you're carrying out a complete transmission overhaul or replacing worn synchroniser components, this OE Match synchro ring offers factory-style fit, performance and durability.

What Does the Synchro Ring Do?

The synchro ring is a critical wear component within the manual transmission synchroniser assembly.

Its primary functions include:

Synchronising the rotational speed of the selected gear and gearbox shaft before engagement.
Allowing smooth, quiet gear changes without gear clash.
Reducing wear on gear teeth, selector sleeves and synchroniser hubs.
Improving shift quality and gear engagement.
Protecting expensive internal gearbox components from premature wear.
Maintaining the refined shifting performance expected from the Porsche 964 manual transmission.

A correctly functioning synchroniser ring is essential for smooth, accurate and reliable gear changes.

Why Do Synchro Rings Wear Out?

Synchroniser rings are designed to wear gradually during normal operation.

Common causes of wear include:

High mileage.
Frequent gear changes.
Aggressive driving or rapid shifting.
Worn or contaminated gearbox oil.
Excessive gearbox temperatures.
Wear to associated synchroniser hubs and selector sleeves.
General fatigue of the friction surface over time.

As the friction material wears, the synchroniser becomes less effective at matching gear speeds, leading to more difficult gear selection and increased gearbox wear.

When Should the Synchro Ring Be Replaced?

Replacement is recommended when:

Gear changes become stiff or notchy.
Grinding or crunching occurs when selecting gears.
The gearbox is stripped for overhaul.
The synchroniser ring shows visible wear or damage.
Replacing synchroniser hubs, selector sleeves or bearings.
Rebuilding a high-mileage transmission.
Preparing a gearbox for fast road or performance use.

Because gearbox disassembly is required, replacing all worn synchroniser rings during a rebuild is considered best practice.

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

92830421105

313096270322

313 09 627 03 22

92830421105

The product you are viewing cross references to these numbers

Syncro ring, manual transmission. Porsche 993 / 996 / 997

92830421123/1

Product Information

Syncro ring, manual transmission
Synchroniser ring is a replacement designed for Porsche manual gearbox applications, ensuring smooth and reliable gear changes. Installed within the transmission’s synchromesh hub assembly, this ring facilitates the engagement of gears by matching rotational speeds before meshing, thereby eliminating grinding and excessive wear. Built to match Porsche’s original specification.
Sold each

Fits:
Porsche 911 (993) (1995-1998) (3rd-6th gear and reverse gear)

Porsche 911 (996) GT2 (2002-2005) (3rd-6th gear)
Porsche 911 (996) GT3 (2000-2005) (3rd-4th gear)
Porsche 911 (996) Turbo / S (2001-2005) (3rd-4th gear)

Porsche 911 (997) GT3 (2010-2011) (6th gear)
Porsche 911 (997) GT3 RS (2011) (6th gear)
Porsche 911 (997) GT3 RS 4.0 (2011) (6th gear)

• Position: Inside manual transmission, synchromesh ring for one of the gear sets (often 3rd/4th gear or 5th/6th depending on the gearbox).

• Function: Enables gear engagement by synchronising shaft speeds, preventing gear-grinding, facilitating smooth shifts and protecting gear teeth and synchroniser hubs.

• Applications: Ideal when the transmission is open for rebuild, when synchroniser wear is apparent (hard or noisy shifts, grinding) or when restoring a Porsche manual gearbox to high performance.

The synchroniser ring is key to proper manual gearbox operation. Over time, wear, heat and load cause the sliding surfaces to glaze or the ring teeth to degrade, leading to symptoms such as gear clash, difficult shifts, poor gear engagement or even damage to gear teeth and hubs. Replacing the synchroniser ring ensures:
• Smooth, reliable gear engagement
• Reduced gear-grinding and longer synchroniser life
• Protection for the gearbox internals from further wear
• Enhanced driving experience and drivetrain reliability

When to replace:
• The gearbox exhibits grinding when changing into a specific gear or range (often 3rd/4th or 5th/6th)
• Hard gear changes, slipping, or noise from the transmission under load
• Internal inspection shows wear or scoring on the old synchroniser ring surfaces
• You’re rebuilding the gearbox or performing a major service where opening the transmission is already necessary.

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

92830421123

92830421123

31309628

313 09 628 03 22

The product you are viewing cross references to these numbers

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Original Porsche Part Genuine Porsche part 92830422105