The system’s pump designed by Emme Racing is made from a solid aluminium piece and CNC machined. Inside, there are two holes in the upper part. One, positioned in the rear area, is close to the inlet of the oil present in the tank, while the one placed approximately halfway along the length of the pump is for safety and serves for the recirculation of the oil when the brake is released to return to the neutral position. The shaft is made of ergal, an aluminium alloy that has a resistance similar to that of C40 steel; as previously mentioned, the flange (pumping element) that pushes the oil into the circuit, the return spring in neutral position and the oil seal rubber are mounted on the shaft. The pumping element also performs the function of regulating the idle stroke of the shaft: based on its position on the shaft (more or less distant from the pump cover, so to speak), thanks to some thicknesses that can be used in a variable position, it allows a greater or lesser stroke of the brake pedal, so that the brake has a "safety" threshold in case the driver is used to resting his foot on the pedal even when this is not required. The rubber pump plays a fundamental role for the correct functioning of the system: when the brake is activated, the rubber tends to expand under the pressure it receives from the oil: once the brake is released, the rubber tends to detach from the  perforated disc on which it rests and allows the oil to pass beyond the grommet, in the area of the brake pump connected to the tank, which is filled up again. There is a cap to close the pump, which can be removed with a special key, in which the shaft is free to slide with a concentricity constraint, and inside which an anti-dust seal is mounted.