The quality of Shimano original parts is impressive. Each part is extensively tested and checked. Shimano's internal requirements are often higher than industry standards and norms. This ensures safety and reliability. The segmentation into groups clearly categorizes performance according to a top-down principle. As a result, each Shimano performance level is distinctly defined. Only Shimano original parts fit perfectly with Shimano components. The optimal fit facilitates replacement and meets the highest demands in all respects.