Liquid RC PO Box 3173 Nashua, New Hampshire 03061 United States of America. Spektrum XSEMC19 Firma Smart Sensored Motor/ESC 4500Kv Sensored Motor Combo. Brand new item, sealed in original retail packaging. Like every component in the Spektrum Smart ecosystem, Firma Smart ESCs combine “plug-and-play” simplicity with the ability to communicate with other Smart electronics together, […]