LOSI PROMOTO-MX Rear Wheel Hub Hex by GPM MX007  [MX007]

Rear hub hex for PROMOTO-MX

This is an RC-scale rear wheel hub hex intended for the LOSI PROMOTO-MX platform, produced by GPM as part number MX007. It replaces the stock rear hub hex at the motorcycle rear wheel position and is machined from 7075-T6 aluminum for dimensional stability under load.

The design accepts larger inner bearings and includes bearing positioning support to keep bearing seats aligned during assembly. Included bearings match common RC sizes listed below, and the hex is intended to work with the Promoto-MX rear wheel assembly without modifying the wheel face or mainshaft, provided the rest of the drivetrain matches the listed compatible models.

For tuning and maintenance the hub hex offers a rigid mounting surface that can reduce play at the wheel-to-axle junction, helping you maintain alignment while changing bearings or experimenting with drivetrain tolerances. Check axle hex size and bearing fits during installation and use an appropriate hex driver to secure the hub.

Use this hub hex when servicing or upgrading the rear wheel of the specified PROMOTO-MX models; verify dimensional fit before final installation and follow standard RC wheel assembly practices.