Cv Grease Ring, 108mm for 930 Porsche, Each

OVERVIEW

Maintaining your high-performance drivetrain just got a whole lot cleaner and more efficient with the EMPI 108mm CV Grease Ring. Designed specifically for the legendary 930 Porsche-style CV joints, these inline greasable plates are a game-changer for off-road enthusiasts, sand rail pilots, and heavy-duty Baja Bug builders. Traditionally, servicing a 108mm CV joint meant a messy teardown, involving the removal of the axle, peeling back boots, and dealing with stubborn grease that seems to get everywhere. With this precision-machined aluminum grease ring, you can pump fresh lubricant directly into the heart of the joint through an integrated Zerk fitting, ensuring your bearings stay cool and lubricated without ever turning a wrench on your CV bolts once installed.

At Appletree Automotive, we know that 930 CV joints are the gold standard for long-travel suspension setups because they handle extreme angles and high torque loads that would snap a standard Beetle joint. However, those high angles generate significant internal heat, which breaks down grease faster than a standard street car. By installing these grease rings, you are adding a vital layer of protection to your investment. The aluminum construction provides a lightweight yet durable spacer that resists corrosion and stands up to the harsh environments of the dunes or the desert. Whether you are running a high-horsepower Type 4 engine or a water-cooled conversion, these rings ensure that maintenance is no longer a chore you avoid, but a quick pre-ride check that extends the life of your drivetrain for years to come.

FITMENT

This 108mm CV Grease Ring is designed for universal application on vehicles utilizing the Porsche 930 (Type 4) style CV joint. Common fitments include:

• Sand Rails & Dune Buggies: Custom builds using 930 CV joints for long-travel suspension.
• Baja Bugs: VW Beetles converted to 930 CV drivetrains for off-road racing.
• Porsche 911 / 930 Turbo: Original equipment replacements for high-performance street and track use.
• VW Vanagon: Upgraded Syncro and 2WD models utilizing 108mm CV conversions.
• VW Type 2 Bus: Late-model Bay Window buses with 108mm CV upgrades.
• Custom Off-Road Chassis: Any 108mm, 6-bolt flange drivetrain system.

SPECS

• Product Brand: EMPI
• Part Number: AC525140-930
• CV Joint Type: Porsche 930 / 108mm
• Material: High-Grade Machined Aluminum
• Outside Diameter: 108mm (Approx. 4.25 inches)
• Bolt Pattern: Standard 6-Bolt 930 Pattern
• Fitting Type: Integrated Zerk Grease Fitting
• Thickness: Precision spaced for inline installation
• Quantity: Sold Individually (Each)
• Compatibility: Requires longer CV bolts (Sold Separately)

PRO TIPS

Pro Tip 1: Account for the Added Thickness. Because this grease ring sits between the CV joint and the drive flange, it increases the overall thickness of your CV assembly. It is absolutely critical that you upgrade to extra-long CV bolts to ensure proper thread engagement into the flange. Failing to use longer bolts can lead to stripped threads or the bolts backing out under load, which can cause catastrophic drivetrain failure. Always check for at least 12-14mm of thread engagement into the flange.

Pro Tip 2: Use High-Quality Moly Grease. Not all grease is created equal, especially for 930 CVs that operate at high angles. When using the Zerk fitting on these rings, we highly recommend using a high-content Molybdenum Disulfide (Moly) grease. This type of lubricant is designed to withstand the extreme pressure and friction found in off-road CV joints. Regular chassis grease will thin out under heat and won''t provide the "plating" action needed to protect the races and cages during hard acceleration.

Pro Tip 3: Clocking and Clearance. When installing the grease ring, pay close attention to the orientation (clocking) of the Zerk fitting. Ensure that the fitting is positioned where it is easily accessible with a grease gun hose, but also make sure it has clear path of travel throughout the entire range of your suspension. Check for clearance against the trailing arms, frame horns, or shock mounts at full compression and full droop to prevent the fitting from being sheared off during a hard landing.