Spektrum Firma 2 in 1 Brushless Crawler Motor/ESC: 2300Kv (SPMXSEM1040B). The Ultimate Compact Crawler Solution. The Spektrum Firma Sensored 2-in-1 System is specifically engineered to be used with 10th scale Crawlers and Scalers. Featuring advanced Field-orientated Control (FOC) and professional drag brake performance and torque control, all while being fully waterproof. The compact 2-in-1 design […]