This rear wheel hub hex is specified for Team Losi Promoto-MX motorcycle models and carries the model number JR-LMX03-RD. It replaces the OEM rear hex to create a firmer connection between wheel and axle, offering a slim, lightweight aluminium profile finished in red for a tuned appearance.
Installation is simple: remove the rear wheel assembly, change the existing hex for this unit and re-use the vehicle's original fastening hardware to secure the wheel. The component is intended as a service spare or hop-up part and does not modify the bike's basic drivetrain layout.
When used in tuning the hub helps reduce lateral play and keeps wheel alignment stable under load, aiding consistent handling adjustments while preserving easy maintenance access.
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