LOSI Promoto-MX Rear Wheel Hub Hex Upgrade - JR-LMX03-BK by Jazrider  [JR-LMX03-BK]

Machined Aluminum Rear Hex for Promoto-MX

This RC-scale rear wheel hub hex is produced as a direct replacement hop-up for the Team Losi Promoto-MX Motorcycle platform. The machined aluminum body tightens the wheel-to-axle interface to help reduce play and keep wheel alignment consistent during ordinary RC dirt riding.

Installation is simple: the part locates to the Promoto-MX rear hex interface and secures with the model's existing fastener points. When fitting, confirm wheel centring and axle engagement before final torque to prevent binding and maintain low runout.

From a setup perspective this hub hex is a low-complexity upgrade that reduces mechanical slop at the rear wheel, making alignment and rear-end predictability easier to achieve on the track.