Axle 31 Spl 30.5 Solid

The Allstar Performance Axle 31 Spline 30.5 Solid is a heavy-duty axle shaft engineered for high-performance rear-end applications requiring maximum strength and reliability. This 30.5-inch solid steel shaft features a 31-spline carrier connection and 24-spline drive flange configuration, making it compatible with a wide range of performance differentials and custom drivetrain setups used in drag racing, street racing, and off-road competition vehicles.

The solid construction delivers superior rigidity compared to hollow alternatives, critical for applications where torque loads exceed OEM specifications. At 10.25 pounds and measuring 37.5 inches in total length, the axle is dimensioned for vehicles requiring a 30.5-inch effective shaft span—a common specification in late-model muscle cars, street rods, and custom fabricated race platforms. The natural steel finish requires proper lubrication and corrosion management but allows for custom coating applications when rebuilt or restored. The 24-spline drive flange connects to compatible performance differentials, while the 31-spline carrier end mates with standard aftermarket and OEM carrier assemblies used across the industry.

This axle suits builders upgrading from weak factory shafts to handle significantly higher horsepower and torque outputs. It's particularly valuable in vehicles modified with large-displacement engines, superchargers, or turbochargers where factory rear-end components become a limiting factor. Verification of carrier and flange spline counts against your existing differential assembly is essential before ordering, as spline configuration determines fitment and load capacity.

Allstar Performance is recognized as a primary supplier of driveline components to the racing and performance aftermarket, with widespread availability of replacement shafts and technical support through established retailers and fabricators. Proper installation requires professional setup and bearing preload adjustment to ensure safe operation and longevity.