Welcome the very popular BrainFPV Radix LI Flight Controller! BrainFPV has packed everything you love from the Radix Flight Controller down into a 20x20 size, perfect for those tight race builds that do not have a lot of room for components. The Radix Li can be stacked with any of the popular 20x20 ESCs you see on the market today! Looking for an option a lot of racers use the Aikon AK32 20x20 6s ESC. The Radix and Radix Li both allow you to customize your Betaflight OSD with your own splash screen logo on startup, giving you your own personal touch to your aircraft. Get yours today!