In the present industrial scenario, quality control is a crucial factor for the success of an industry or an organization. Process capability is an important statistical quality tool for measuring the capability of an industrial operation. The paper aims at the process capability of a reaming operation in manufacturing of cylinder head in a leading motorcycle company. The process capability of the reaming operation can be reflected by measuring the quality characteristics of its machined component. For this purpose, adequate sampling of the lot has been considered, probability plots and histograms have been prepared and the performance indices have been computed that indicate the capacity of the process to manufacture a component efficiently. Based on the observations made and data analysis, it has been proved that this statistical process control technique not only helps in improving quality and productivity of an industrial operation but also helps in taking important managerial decisions in an organization.