Microstub for 930 CV, 33 Spline, Sold Each

Elevate Your Off-Road Strength with the EMPI 930 Chromoly Microstub

When you''re pushing the limits of your off-road machine, the stock IRS setup simply won''t cut it. This EMPI Microstub for 930 CV joints is engineered to handle the massive torque and extreme angles associated with high-horsepower air-cooled engines and long-travel suspension systems. Crafted from high-strength forged chromoly and finished with precision CNC machining, these stub axles provide the ultimate link between your transaxle and your wheels. By utilizing the 930 CV jointoriginally designed for Porsche''s turbocharged powerhousesyou gain a significantly larger range of motion and much higher load capacity than standard Type 1 or Type 2 CVs. Whether you''re building a dedicated sand rail or a desert-shredding Baja Bug, these microstubs offer the peace of mind that comes from overbuilt, race-proven hardware that is designed to take a beating and keep you on the trail.

Performance isn''t just about raw strength; it''s about efficiency and geometry. The microstub design allows for a more compact and lightweight hub assembly compared to traditional stub axle and drive flange setups, which translates to reduced unsprung weight and significantly better suspension response over undulating terrain. These axles are designed with a 33-spline configuration and a robust 1.490-inch diameter, ensuring that every ounce of power from your engine is transferred to the dirt without the risk of shearing under load. The inclusion of the specialized washer for the 930 CV joint and the use of 3/8"-24 threads ensure a secure, professional-grade fitment that stands up to the intense vibrations and impacts of off-road racing. Sold individually, these stubs are the industry standard for custom trailing arms and high-clearance rear ends, making them a mandatory upgrade for any serious VW enthusiast looking to dominate the dunes or the dirt track with a bulletproof drivetrain.

High-Performance Vehicle Fitment

• Custom Sand Rails: Specifically designed for aftermarket trailing arms set up for microstub hubs.
• Dune Buggies: Ideal for high-horsepower builds utilizing 930 (108mm) CV joints.
• Baja Bugs: Essential for long-travel rear suspension conversions where stock axles are the weak link.
• Off-Road Race Cars: Compatible with various Class 1, Class 5, and Class 10 chassis using microstub technology.
• IRS Conversions: Perfect for upgrading heavy-duty street/strip Volkswagens to a 930 CV platform.

Technical Specifications and Dimensions

• Material: High-Strength Forged 4130 Chromoly Steel.
• Manufacturing Process: Full CNC Machining for exacting tolerances and balance.
• Spline Count: 33 Spline for maximum surface area and torque distribution.
• Axle Diameter: 1.490 Inches at the shaft.
• CV Compatibility: Fits 930 Style (108mm) CV Joints.
• Hardware Threading: 3/8"-24 Internal Threads.
• Included Components: Sold each; includes the necessary washer for 930 CV joint seating.
• Finish: Precision machined raw steel (requires lubrication/grease during assembly).

Specialist Pro Tips for Installation

Pro Tip 1: Critical Torque and Thread Security: When installing your 930 CV bolts into these microstubs, it is imperative to use a high-quality, high-strength thread-locking compound (such as Red Loctite). Because these units are subject to extreme vibration and heat cycles, bolts can back out if not properly secured. Always torque your 3/8"-24 bolts to the manufacturer''s specific rating in a star pattern to ensure even pressure across the CV face and the included washer. Don''t skip the re-torque after your first "shake-down" run to ensure everything has seated correctly.

Pro Tip 2: Spline Lubrication and Maintenance: Before sliding your 33-spline hub onto the microstub, thoroughly clean both sets of splines and apply a light coat of high-pressure anti-seize or synthetic grease. This prevents "fretting corrosion" and makes future disassembly for bearing or seal maintenance significantly easier. If you ever notice play between the spline and the hub, inspect the components immediately; a loose fitment will quickly wallow out the splines and lead to a catastrophic failure under high-torque launches.

Pro Tip 3: Optimize Your CV Angle: While the 930 CV joint is famous for its ability to handle steep angles (up to 25-28 degrees depending on the brand), running them at their absolute limit for extended periods will generate excessive heat and premature wear. When setting up your trailing arm stops, try to leave a small "safety margin" of 1-2 degrees. Additionally, always use a high-moly content CV grease specifically rated for off-road use to ensure the microstub and CV interface remains cool and lubricated during long desert runs.