LOSI Promoto-MX Front Wheel Hub Hex Upgrade - JR-LMX02-GR by Jazrider  [JR-LMX02-GR]

Promoto-MX Front Hub Hex Summary

This RC front wheel hub hex is designed for Team Losi Promoto-MX scale motorcycle models and is identified as JR-LMX02-GR. The component replaces the stock front hub hex, providing a metal mounting interface suited to repeated removal, fit adjustments, and routine workshop maintenance on scale dirt bikes.

The hub hex acts between the wheel assembly and the axle, locating the wheel with the existing wheel nut or hex screw. Manufactured from aluminium, it offers a firmer hub-to-wheel connection compared with molded plastic parts, helping to maintain alignment during setup and use without implying real vehicle application.

Installing the part is straightforward for model motorcycle hobbyists: remove the front wheel, swap the original hex for the aluminium unit, and secure with the original fastener. After installation check that the hex sits squarely against the wheel face and confirm wheel runout; use the correct hex driver and avoid over-torquing to protect threads.

As a service and replacement hop-up the hex provides a firmer mounting datum that can reduce play at the wheel interface and make suspension and steering adjustments more predictable when tuning the Promoto-MX chassis. It is supplied for scale dirt bike setups rather than as a primary performance upgrade.