Mountain Bike Gears explained

When you choose mountain bike, it is a good idea to learn more about the gearing systems. This article will explain more about how those systems work. Mountain bike gears are continually becoming more and more complicated and intricate. Todays bikes can come with up to 27 gear ratios. It is common for a mountain bike today to use nine gears in the back and three sprockets of different sizes in the front for gear ration production.