When you're flying down a back woods trail you can't afford to worry about how your bike's going to respond. We design our mountain bike components so they do what you want them to instantly. SHIMANO components create a more efficient bicycle-to-rider interface that demands less of your energy. We do it through low-effort and precise shifting systems and through linear response braking systems that deliver superior power and modulation. By using components that work for you, you can focus more on the task at hand riding your bicycle.