This MX2020T 20T servo arm is a precision 7075-T6 aluminium replacement sized for Promoto-MX platforms produced for LOSI. It mounts at the servo output to provide a direct mechanical link to the brake linkage, enabling controlled adjustments to servo geometry and brake response while retaining existing electronics.
The item is supplied as a pair to fit standard dual-link brake arrangements used on Promoto-MX bikes. Compatibility is limited to the LOSI models listed in the compatible models box below. Installation requires removal of the original arm, correct indexing to the servo spline and secure fastening with the factory hardware.
LOS261013,LOS262009