This 7075-T6 aluminum 20T servo arm set is an RC-scale replacement designed for Promoto-MX bikes built for LOSI. The parts mount at the servo output and interface directly with the brake linkage to let you dial in brake response and servo geometry without changing electronics.
The pair matches standard dual-link brake setups on Promoto-MX machines. Fitment is specific to the LOSI models listed below, so verify compatibility before fitting. Installation generally involves removing the stock arm, indexing the spline, and securing the replacement with the original fasteners.
LOS261013,LOS262009
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