A new, improved 'racewire' type board with built-in LEDs that work off the existing motor power. These provide a connection between ESC and motor, removing any exposed wires from potential prop strikes and making motor swaps a bit easier with easy to access solder pads. Each PCB has 6 LEDs and you can do a combo of top and bottom of the arms by connecting the A,B,C jumper pads in the middle of the PCB.
Comes in different color (Blue; Green; Yellow; Red).
You will need to isolate the Race Wire LED from the frame using electric tape or double-sided tape.