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

Aluminum rear wheel hex for Promoto-MX

This RC-scale rear wheel hub hex is made as a replacement hop-up for the Team Losi Promoto-MX Motorcycle platform. The machined aluminum construction focuses on a firmer wheel-to-axle interface to help minimise play and keep wheel alignment consistent under normal RC dirt riding conditions.

Installation is straightforward: the part fits the Promoto-MX rear hex interface and secures using the model's existing fastener points. When fitting, verify wheel centring and axle engagement before final tightening to maintain consistent runout and avoid binding.

In tuning terms this hub hex serves as a low-complexity upgrade to reduce mechanical slop at the rear wheel, making wheel alignment adjustments and rear-end behaviour easier to predict during setup work on the dirt track.