.In order to reduce the speed of the vehicle, the brakes have to convert the kinetic energy stored in the vehicle to heat energy. A braking system consists of an energy-supplying device, a control device, a transmission device and the brake. 2.This is generally due to their simpler design, lighter weight, and better braking performance. The main components of a disk brake are the brake pads, disk rotor, piston, and caliper.