The Lumenier 30A BLHeli_S ESCs feature the powerful BusyBee2 (EFM8BB21F16) chip that runs at at 48MHz 2x the speed of prevoius BLHeli_S ESCs. This BB2 processor allows the ESC to perform with incredible precision (up to 500kv eRPM support), resulting in smooth and responsive power and taking full advantage of the BLHeli_S firmware. The ESCs are low profile and compact in size, saving weight and making builds easy. These ESCs are OPTO (no BEC) and come pre-soldered with motor, signal and power wi