Crane Axle 40-Spline Aluminum Wheel Hubs (for Crane Spindle System)

• Application: GM 14-Bolt Full-Floating Rear Axle
• Spline Count: 40 Spline
• Material: 6061 Billet Aluminum
• Machining: Precision machined in the USA
• Bearing Races: Included / Pre-Installed
• Weight Savings: Lighter than factory steel hubs
• Finish: Machined aluminum
• Designed for: Rock bouncing, rock crawling, desert use, and high-horsepower off-road builds

• GM 14-Bolt Full-Float Axle
• ONLY Compatible with Crane Axle 40 Spline Rear Spindle Kit (CA01032)
• Works with standard 14-bolt brake and wheel components (unless otherwise modified)

Crane’s 40 Spline 14-Bolt Aluminum Wheel Hubs eliminate unnecessary unsprung and rotational weight while maintaining the strength needed for extreme off-road abuse. Aluminum hubs significantly reduce the rotating mass at each corner — meaning quicker acceleration, easier braking, and less stress on drivetrain components.

Combined with a 40-spline upgrade, this setup is one of the most reliable and competition-proven options for aggressive off-road builds.

To ensure proper fitment and performance, these hubs must be paired with the specific components listed below. Click the links to view the required matching parts for your build:

• The Required Spindles: Crane Axle 40 Spline Rear Spindle Kit (Pair) - CA01032
• Drive Components: Crane 14 Bolt 40 Spline Drive Flange Kit CA01052 
• Bearings & Seals: Crane Axle 40 Spline Spindle Wheel Bearing Set CA01030
• Braking: Crane Axle 14-Bolt Rotor & Caliper Bracket Kit - WA01033

Why Run the Crane System? By utilizing the complete Crane Axle hub and spindle ecosystem, you are eliminating the weak points found in adapted "junkyard" builds. This is a purpose-built racing solution designed to handle the torque of a modern big block or LS, giving you the confidence to go wide open.