This aluminum rear brake disc fits Team Losi Promoto-MX scale motorcycle models and is designated JR-LMX07-BK. It is supplied as a direct replacement component for model use only and is not intended for full-size vehicles.
The disc replaces a worn or damaged rear rotor and provides a stable mounting surface for brake pads. Fitment uses the Promoto-MX mounting pattern, so confirm your kit matches the Promoto-MX specification before ordering.
Installation is a typical model-level procedure. Remove the wheel and old rotor, transfer any spacers or mounting hardware required by your setup, install the replacement disc, then check pad clearance and alignment. Carry out a short low-speed bench check on the model to verify smooth brake engagement before normal operation.
Maintenance tips: include the disc in your brake inspection routine, look for signs of wear or distortion after heavy use, and ensure all fasteners remain tight. The black finish adds protection and should be cleaned gently to avoid surface damage.
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