This rear brake disk is CNC-machined from 7075-T6 aluminium as a direct-fit replacement for LOSI 1/4 PROMOTO-MX motorcycles. The component is produced for maintenance and light tuning, delivering consistent contact geometry and improved wear characteristics compared with common stamped alternatives.
Installation follows standard procedure: remove the wheel, replace the original rotor and retain the factory fasteners. The disks are supplied as a matched pair to suit the stock rear brake assembly on the listed PROMOTO-MX models. Verify rotor alignment and runout with basic RC tools before final assembly.
LOS262010