Spektrum Firma 100A Brushless Smart ESC / 6500Kv Sensorless Motor Combo: No-Prep. The Spektrum Firma Sensored Smart ESC System is specifically sourced to be used with 10th scale Drag and Speed Run models running 2S LiPo power. Featuring advanced Smart connectivity that reports valuable telemetry data without any extra accessories. Motor and ESC Combo: Easy […]