The brake rotor, also known as the brake disc, is an essential component that rotates with the wheel. It is clamped by brake pads, which consist of friction material, fitted to the caliper from both sides. This clamping is achieved through pressure exerted by piston(s) within the caliper, forming a pressure mechanism. As the brake pads make contact with the rotor, the resulting friction reduces the rotational speed of the disc, leading to the deceleration and ultimately the stopping of the vehicle.