The Alivio is another groupset option for mountain bikes offered by Shimano. The Alivio is considered in a slightly less advanced class than the Deora, a very popular groupset, but is still said to offer many great features. The Alivio is fairly affordable, suited for beginning or entry-level mountain bikes. Compared with the Acera, it’s a bit more advanced, however, and will provide a more smooth ride. It’s also more suitable for harder conditions.