The main focus of many bike-lovers is the chain. It is very important, indeed. That is why it will get its own entry. However, the chain's functionality depends also on the other components. Thus, let's consider them for this time. The derailleur, the cassette or the pedals might get stuck when water and dirt mix in their intermediate which could end your tour in a very uncomfortable fashion. As far as dirty and neglected brake parts are concerned, we all know the end of that story. The PROED-shop offers you all solutions, to take care of mechanical parts properly in order to guard against nasty surprises.