Shimano original parts maintain the precision and function of components for optimum performance, maximum safety and long durability. Quality The quality of Shimano original parts is impressive. Every part is extensively tested and inspected. Shimano's own specifications are often higher than those of industry standards and norms. They mean safety and reliability. PerformanceProducts are arranged in a hierarchy of groups from the top down. This clearly defines the respective Shimano performance level. CompatibilityOnly Shimano original parts fit perfectly with Shimano components. The optimum accuracy of fit facilitates replacement and meets the highest demands in all respects.