All TopicsGUIDE TO BUY DRONEX-Racer Quadrant 25A 4~6S BLHeli_S ESC by admin on December 26, 2016 share 0The new X-Racer Quadrant ESC is powered by high performance EFM8BB21 MCU, and flashed with BLHeli_S program. It supports multishot/one shot42/oneshot125. With 25AMp constant RMS (30A max) and supports 4-6s. The four tiny X-Racer Quadrantread more