Traxxas Portal Drive Input Gear Rear RC Spare Part - 8259

The Traxxas TRX8259 Portal Drive Input Gear Rear is a genuine Traxxas replacement part designed for the rear portal drive units found across a wide range of TRX-4 scale trail trucks. The input gear sits at the heart of the portal drive assembly, transferring drive from the axle shaft into the portal unit itself. If you're seeing stripped teeth, unusual noise from the rear axles, or loss of drive to one or both rear wheels, this is the component most likely to be at fault. Running a genuine Traxxas part ensures correct fit and meshing tolerances within the portal housing.

Key Features

• Genuine Traxxas replacement input gear for rear portal drive assemblies
• Direct fit for multiple TRX-4 variants — no modification required
• Critical drivetrain component; transfers rotational force into the portal gear set
• Replaces worn, stripped, or damaged input gears to restore full rear drive function
• Compatible across a broad range of TRX-4 model numbers, making it a useful spare to have on hand

What's Included

• 1x Traxxas TRX8259 Portal Drive Input Gear Rear

What You Need

• Appropriate tools for portal drive disassembly (e.g. hex drivers, pin punch)
• Traxxas TRX-4 compatible with one of the listed part/model numbers to confirm fitment
• Replacement grease or thread-lock compound if servicing the full portal unit at the same time