This 7075-T6 aluminum rear brake disk is an RC-scale replacement made for LOSI 1/4 PROMOTO-MX motorcycles. Machined for a direct fit to the specified PROMOTO-MX rear assembly, the disk is intended for routine maintenance and light tuning where reliable braking feedback and long wear life are priorities.
Fitting normally requires wheel removal and swapping the stock rotor with this unit using the existing fasteners. The disks are supplied as a pair to match standard rear brake setups and fit the stock mounting points on the listed PROMOTO-MX models. Use basic RC hand tools and confirm alignment and clearance before final tightening.
LOS262010
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