27.5 and 650B Mountain Bikes
Mountain biking has evolved a lot in the past few years and that evolution is not only in the materials that are used but also in the wheel size. The old 26 inch wheel is still alive, but with the introduction of the new 29 inch wheel, or 29er, it gave riders the option between either the easy rolling, yet heavier 29er, or the lighter more agile 26". The invention of the 27.5" wheel has come as third option that provides the balance between the two extremes. The new 650b wheel, or 27.5 inch, gives the best of both worlds - great rolling ability and still nimble enough to take on those gnarly single tracks.