The main components of the derailleur for mountain bike, trekking bike, touring bike or road bike are mostly identical. The interplay of front derailleur and gearshift gives you the opportunity, depending on the situation, to set a higher or lower gear. On a mountain bike, the components of the brake and shift levers are often separated. In contrast, road-racing cyclists attach importance to an ergonomic combination, which also offers a comfortable grip position. Depending on the application, gear changes with up to eleven gears on the rear wheel and three chain rings on the crank are possible.