Hobbywing Xerun Axe Plus R3 & Axe 540l 2100Kv R2 Motor
AXE R2: 540 / 540L / 550. Features Xerun AXE Plus R3. Only compatible with Xerun AX "R2" and "R3" motor series. Technical Specifications Xerun AXE Plus R3. Motor Limits: Only supports Xerun-AXE "R2" and "R3" motor series.