VW IRS Axle Set - 33 Tooth Spline

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A specialized axle solution for high-performance Volkswagen IRS (Independent Rear Suspension) setups. Unlike standard axles, SKU 2015 features an extended spline design that removes the inboard shoulder. This allows the CV joint to "float" along the shaft, a critical feature for long-travel off-road buggies or lowered street cars, as it prevents the CV cage from bottoming out and shattering during extreme suspension articulation.

Performance & Fitment

Application: High-Performance IRS Rear Axle Set

Length: 15 5/8"

Spline: 33-Tooth (1.062" OD, 2 3/8" spline length)

• VW Type 1 (Beetle/Bug): High-performance street or off-road IRS builds.

• VW Type 2 (Bus/Transporter): Heavy-duty replacement for custom IRS conversions.

• VW Type 3: Compatible with IRS-equipped Notchback, Squareback, and Fastback models.

• Compatibility: Designed to work with standard 33-spline CV joints (typically Type 1 or Type 2 / 002 styles depending on the specific hub setup).

Premium Construction

• Material: Manufactured from solid high-strength alloy steel, built to handle the torque loads of high-horsepower air-cooled engines.

• Extended Spline Design: The 2 3/8" long spline without a shoulder is the standout feature. By allowing the CV to slide freely, it accommodates changes in track width as the suspension moves through its arc, eliminating cage breakage caused by axle bind.

• Heat Treatment: Through-hardened to achieve the perfect balance of surface hardness and core flexibility.

• Manufacturing: Centerless ground for a perfectly consistent diameter and a smooth surface that resists stress risers.

• Finish: Industrial-grade powder coating for long-term corrosion resistance.

⚠️ Technical Installation Notes

• CV Joint Float: When installing, ensure your CV boots are high-quality and flexible (such as silicone or heavy-duty rubber). Because the CV joint "floats" on these axles, the boot must be able to stretch and compress more than a standard setup.

• Snap Ring Usage: Ensure you use the correct snap rings to retain the CV joint on the shaft. Even though the joint floats, it must remain within the functional range of the splines.

• Grease: Use high-moly CV grease. The extended movement of the joint on the spline requires consistent lubrication to prevent wear on the axle's splines.

What’s Included

• Pair of VW IRS axles
• Spirol Lock circlips to secure the CV joint

Warranty

Backed by a 1-year warranty for peace of mind.