HD Pro Aluminum Center Section with Lightweight Steel Spool, Standard Gear & Chromoly Yoke

The HD Pro Aluminum Center Section is engineered for maximum strength & durability, featuring a 206-T4 heat-treated aluminum case that delivers 12% higher yield & 32% higher tensile strength than standard 356-T6 aluminum. Designed for high-load, high-RPM applications, this unit includes:

HD Pro Case
3.062″ bore – 31 or 33 Spline
3.250″ bore – 35 or 40 Spline
• Manufactured from 206-T4 heat treated aluminum
• 12% higher yield & 32% higher tensile strength compared to 356-T6
• Large oil channel provides optimal lubrication to pinion bearings
• Heavily reinforced tail bearing area
• Chromoly studs encapsulated by Billet aluminum main caps
• Solid adjuster nuts
• Accepts over-sized tail bearing for heavy loads & high RPM

Paired with a lightweight steel spool, standard gear set & chromoly yoke, this center section is built for serious racing performance.

This HD Pro Aluminum Center Section is a heavy-duty upgrade for your rear end, built to handle big horsepower & high RPM. It’s designed for serious racing applications, whether you’re launching hard at the drag strip or pushing your car to the limits on the track.

The lightweight aluminum case helps reduce weight without sacrificing strength, while the reinforced internals ensure durability under extreme loads. If you need a strong, reliable differential setup that can take abuse & keep your power planted, this is the part for the job!