The sensations are essential while riding a bicycle. When you operate the controls we demand that these are functioning in the best possible way, with precise and quick movements, without difficulties. Proper maintenance and cleaning helps to obtain the reliability of using components including the chain and cassette which are the most involved elements subjected to stress. The teeth of the cassette has a great influence on the hardness of gear and for this reason should be chosen according to the training of the rider and the route intended to ride. Fine materials such as titanium and aluminium makes it super lightweight, top sprockets of "Shimano" and "Miche" range, these are the ideal solution for the racing bike and the high-level mountain bikes without sacrificing the durability and effectiveness of the gears .