20 1/4 Axles 33 Spline Pair Fits VW Type 1 & 2 CV Joints

OVERVIEW

When you''re pushing the limits of your off-road machine, whether it''s a heavy-duty sand rail or a rugged Baja Bug, the drivetrain is often the first place to show weakness. These EMPI 20-1/4 inch Chromoly axles are engineered specifically to handle the increased torque and extreme angles associated with long-travel suspension setups. Constructed from high-strength 4340 Chromoly steel and finished with a durable zinc plating to resist corrosion in harsh environments, these axles provide the reliability you need when you''re miles away from the nearest pavement. Specifically designed for use with Type 1 transmissions utilizing 3x3 trailing arms, these axles offer the perfect length to maintain proper CV joint geometry throughout the entire range of suspension travel, preventing the binding and premature wear that often plagues lesser components.

The 33-spline design is a industry standard for performance, offering a significant upgrade in surface area contact compared to stock configurations. These axles are versatile enough to accommodate both Type 1 (113) and Type 2 (002) CV joints, giving builders the flexibility to choose the joint strength that best matches their engine output. By utilizing a 2-1/2 inch spline length, these axles ensure maximum engagement within the CV hub, which is critical for preventing stripped splines under hard acceleration or when landing jumps. Sold as a matched pair, these axles are the backbone of a high-performance Independent Rear Suspension (IRS) system, providing the peace of mind that comes from knowing your power is being delivered through professional-grade hardware designed by the most trusted name in the air-cooled VW industry.

FITMENT

• VW Beetle (Type 1): Equipped with aftermarket 3x3 Trailing Arms and IRS Suspension.
• VW Baja Bug: Custom long-travel IRS configurations.
• Dune Buggies & Sand Rails: Specifically those using Type 1 or Type 2 CV joints with 20-1/4 inch spacing requirements.
• Woods Buggies: Ideal for high-articulation off-road environments.
• Custom Kits: Any off-road vehicle utilizing a VW-based transaxle and extended width suspension arms.

SPECS

• Part Number: 16-2210-0
• Overall Length: 20-1/4 Inches
• Material: High-Strength 4340 Chromoly Steel
• Finish: Corrosion-Resistant Zinc Plating
• Spline Count: 33 Splines
• Spline Length: 2-1/2 Inches per side
• CV Compatibility: Fits Type 1 (113) and Type 2 (002) CV Joints
• Quantity: Sold as a Pair (Two Axles)
• Weight: Approximately 9 lbs per pair

PRO TIPS

1. Verify Axle Float and End Play

One of the most common mistakes when installing extended axles like these 20-1/4 inch units is failing to check for ''axle float.'' Once the CV joints are installed and the suspension is fully assembled, you must move the axle back and forth between the joints. You should have approximately 1/8 inch to 1/4 inch of free play (float). If the axle is tight against the CV cages at any point in the suspension travelespecially at full droop or full compressionit will act like a solid ram and destroy your transaxle''s internal snap rings or the CV cages themselves. Always cycle your suspension without the springs or torsion bars to confirm the axle never bottoms out.

2. Use High-Performance CV Grease

Because off-road axles operate at much higher angles than stock street cars, the friction generated within the CV joint is significantly higher. Do not use standard chassis grease or cheap multi-purpose grease. We recommend a high-moly content, high-temperature CV grease specifically formulated for off-road racing. When packing your 33-spline joints, ensure the grease is forced into the cage and around the balls. Proper lubrication not only extends the life of the splines on these Chromoly axles but also prevents the CV joints from overheating and seizing during long sessions in the dunes or on the trail.

3. Check Spline Cleanliness and Snap Ring Seating

Before sliding your CV joints onto these zinc-plated axles, ensure the splines are completely free of any debris or shipping residue. Even a small burr or a bit of grit can make installation difficult and lead to galling. When installing the snap rings, verify that they are fully seated in the groove. A snap ring that isn''t perfectly seated can pop off under the stress of suspension cycling, allowing the CV joint to slide off the splines. It''s a good habit to use a small flat-head screwdriver to ''spin'' the snap ring in its groove after installation; if it spins freely, it''s locked in place.