The specialized roubaix expert udi2 road bike 2017 revolutionises the way you ride the roads with a genre defining design that can tame the wildest tarmac without any extra effort the frame is the lightest that specialized have ever made constructed from a fact 10r carbon fibre delivering stiffness levels off the charts features a whole new faster and more efficient geometry that doesnrsquot compromise on the classic roubaix fit feel and riding position that became so well established