Yukon Gear & Axle YDAT100-529SPL Dropout Assembly Toyota T100 8.4" Rear Steel Spool 30 Spline 5.29 Ratio

The Yukon Gear & Axle YDAT100-529SPL is a complete, fully assembled dropout assembly (third member) for the Toyota T100 8.4" rear differential. Built by expert Yukon technicians, this unit arrives fully shimmed and backlashed to factory specification — delivering a true bolt-in installation with no guesswork required.

This SPL variant is upgraded with a Yukon steel spool featuring a 1.785" journal, replacing the open or limited-slip carrier for maximum power transfer and drivetrain rigidity. With a 5.29 gear ratio and 30-spline configuration, it is engineered for high-demand off-road and performance applications where reliability and consistent traction are critical.

Key Features:

• Gear Ratio: 5.29
• Spline Count: 30 spline
• Upgraded internals: Yukon steel spool with 1.785" journal
• Differential housing: Toyota T100 8.4" rear differential
• Includes yoke — everything needed for a complete install
• Fully shimmed and backlashed to spec at the factory
• Complete dropout (third member) assembly — ready to drop in

Simply install the third member into your differential housing, bolt on the diff cover, add fluid, and you're ready to go. The Yukon YDAT100-529SPL eliminates the time and precision required for a bench build, making it an ideal solution for both professional installers and experienced DIY builders.