LOSI Promoto-MX Rear Brake Disc Upgrade JR-LMX07-RD by Jazrider  [JR-LMX07-RD]

Rear brake disc for Promoto-MX

This RC-scale rear brake disc is made for Team Losi Promoto-MX motorcycle models and is supplied as part number JR-LMX07-RD. The component is machined from aluminum and finished in red, designed as a direct replacement or an upgrade for the Promoto-MX rear braking assembly.

As an RC dirt bike accessory, the disc is intended to deliver consistent brake feel and straightforward maintenance compatibility; it does not alter drivetrain or motor output. The item is provided as a single rear brake disc sized for hub installation on compatible Promoto-MX chassis.

Installation notes: the part replaces the existing rear disc and fits within the Promoto-MX rear hub geometry, allowing modelers to fine tune rear braking response and mitigate heat during extended runs. This is a model-only replacement and carries no full-scale implications.