22 Axles 28 Spline Pair for 930 CV Joints

OVERVIEW

When you''re pushing the limits of a long-travel off-road suspension, your drivetrain is only as strong as its weakest link. For high-performance Volkswagen-based sand rails, desert racers, and heavy-duty woods buggies, the transition to 930 CV joints is a mandatory rite of passage. These EMPI 22-inch Chromoly axles are engineered specifically to bridge the gap between your transaxle and your trailing arms, providing the extreme articulation and torque capacity required for aggressive off-road maneuvers. Crafted from high-strength 4340 chromoly steel, these axles are designed to twist slightly under sudden shock loads, acting like a torsion bar to protect your expensive transaxle internals while maintaining the structural integrity needed to survive the harshest whoops and jumps.

Beyond their sheer strength, these axles feature a precision-machined 28-spline count that is the industry standard for 930 (Porsche style) CV joints. The 22-inch length is a critical dimension for builders running widened trailing arms or custom long-travel IRS (Independent Rear Suspension) setups where stock-length axles simply won''t reach. To ensure longevity and resistance to the elements, each axle is finished with a high-quality zinc plating. This coating prevents the corrosive pitting that can lead to stress fractures over time, ensuring that your investment stays trail-ready for seasons to come. Whether you''re building a fresh Baja Bug or upgrading a mid-engine sand car, these axles deliver the reliability that seasoned air-cooled veterans demand.

FITMENT

These axles are designed for custom high-performance applications and are not a direct "bolt-on" for stock-width Volkswagen vehicles. They are specifically intended for:

• Custom Sand Rails and Dune Buggies: Ideal for frames utilizing widened IRS trailing arms (typically +2 or +3 inch wider setups).
• Baja Beetles: Used in long-travel rear suspension conversions requiring 930 CV joints.
• Off-Road Race Cars: Suitable for Class 5-1600 or custom classes using 930 CV drivetrain components.
• Manx-Style Buggies: High-horsepower builds requiring a significant upgrade over the standard Type 1 or Type 2 CV joints.
• Compatible CV Joints: Exclusively for 28-spline 930 (108mm) CV joints.

SPECS

• Material: High-Strength 4340 Chromoly Steel.
• Overall Length: 22 Inches (End to End).
• Spline Count: 28 Spline (Standard 930).
• Spline Length: 2-1/2 Inches on both ends for maximum engagement.
• Finish: Corrosion-resistant Zinc Plating.
• Quantity: Sold as a matched pair (2 axles).
• Application: IRS (Independent Rear Suspension) only.
• Compatibility: Designed for use with 108mm 930-style CV joints.

PRO TIPS

1. Verify Your Axle Float

One of the most common mistakes in long-travel builds is not checking for "axle float" or "end play." When your suspension is at full droop or full compression, the distance between the drive flanges changes. You must ensure that the axle has at least 1/4 inch to 1/2 inch of lateral movement (float) at all points of the suspension travel. If the axle "bottoms out" inside the CV joints, it will act like a solid ram, shattering your transaxle''s differential or destroying the CV cages. Always cycle your suspension through its full range of motion without the springs/shocks installed to confirm the 22-inch length is correct for your specific arm and pivot geometry.

2. Proper CV Joint Preparation and Clocking

When installing these 28-spline axles, it''s vital to properly prep your 930 CV joints. Ensure you use a high-moly, high-temperature off-road grease specifically formulated for CV joints. When sliding the CV onto these chromoly splines, ensure the snap rings are fully seated in the grooves. Furthermore, many builders recommend "clocking" the CV jointsaligning the inner and outer races so the balls are in a specific orientationthough the most critical factor is ensuring the CV boots are not over-stretched or pinched at full droop. Use high-quality stainless steel boot ties to prevent grease spray, which can lead to premature joint failure.

3. Deburr and Inspect After Installation

Even though these axles come zinc-plated and ready for use, always inspect the splines for any shipping dings that might hinder the CV joint from sliding on smoothly. If you encounter resistance, don''t force the CV onto the axle with a hammer. Instead, use a fine triangular file to lightly deburr the spline lead-in. Additionally, after your first few hours of hard off-roading, pull the boots back and inspect the splines and snap rings. High-horsepower engines combined with heavy tires can put immense stress on the drivetrain; catching a loose snap ring or a torn boot early can save you from a catastrophic failure out in the middle of the dunes.