In a SAG mill operation, approximately 75% of the total energy is used to move its structure and the grinding media only. From experience we have learned that in order to improve the SAG mill performance, each mill should be treated individually because each operation has its own requirements. One of the sections of the mill that largely influences its performance is the discharge head liner configuration, since its function is to efficiently evacuate the pulp out of the mill. For that reason, their hydraulic design and the rotational speed have a relevant effect over the mill performance. This rotational speed can affect both milling and discharge significantly, where its design has to be robust enough to withstand the slurry flow speed variations required by grinding, decreasing recirculation levels thus increasing the pulp discharge. In this paper, we have collected theory and evidence, specifically focusing on the discharge head manufactured in composite, and we will demonstrate that there are many improvements to be made by controlling variables such as length, discharge angles, use of anti-wear materials, location and weight of components, all of them benefitting the operation.