Skystars F7 Mini + KM55A Mini is a powerful stack for racing and freestyle copters. The FC uses a modern F7 processor. It has 5V/2A and 10V/2A BEC for powering peripherals. The ESC have a current capacity of up to 55A and are one of the few mini ESC that use large 5x6mm mosfets protected by an aluminum heatsink. The great advantage of the ESC is that it uses the AlkaMotors AM_32 firmware, which is considered by many to be the best current firmware for ESC.