ANTI LOCK BRAKES are a system that is between the brake master cylinder and the wheels. The system prevents an unstable condition of the car under extreme braking conditions. It modulates the pressure of the brake fluid that is applied to both front brake calipers and/or both rear calipers, preventing the wheels from "LOCKING UP". Normal brake fluid pressure is restored when there is no longer a possibility of the wheels locking up. Each wheel has a SENSOR that the system monitors for each wheels rotation. If one of the wheels is turning slower than the others, the anti lock system releases the pressure to that wheel. The system is designed to provide positive feedback by way of a kickback on the brake pedal when the system has been activated. The system works very well in wet or icy conditions, preventing skids and loss of directional control.