HOBBYWING HWI38020312 XERUN AXE 540L R2 Brushless System Crawler AXE 540L-2100KV-R2 Motor Combo. All items we sell are brand new in factory sealed packaging! XERUN AXE 540L R2 Brushless System for Rock Crawler w/ AXE 540L-2100KV-R2 Motor, Combo. XERUN AXE R2 FOC ESC Specification. Input Voltage: 2-3S LiPo, 6-9S NiMh. BEC Output: 6V/7.4V Switchable, Continuous […]