Losi Promoto-MX Rear Wheel Hub Hex Aluminum - JR-LMX03-RD by Jazrider  [JR-LMX03-RD]

Promoto-MX rear wheel hex overview

This RC-scale rear wheel hub hex is made for use with Team Losi Promoto-MX motorcycle models and is offered as model JR-LMX03-RD. The unit replaces the factory rear wheel hex to re-establish a secure wheel-to-axle interface while keeping a compact, lightweight aluminum construction and a red finish that complements tuned bike styling.

Fitting is a straightforward, direct replacement: remove the rear wheel, swap out the stock hex for this piece, then secure using the vehicle's original fastening hardware. The part is intended as a plug-in spare or hop-up for Promoto-MX scale dirt bikes and does not alter drivetrain geometry.

For setup and tuning this hub hex helps minimise play at the wheel interface and holds wheel alignment under load, supporting predictable handling during off-road riding while remaining easy to service.