For example, a Trek Emonda has a reach of 386mm in a size 54cm frame, a Specialized Tarmac ... we face when buying a bike is that each brand lays out its geometry charts in a different way ...

Not all consumers are racers though; in fact, the majority don’t race at all, and so don’t need a bike frame that’s UCI-legal. For the new Sirrus models, Specialized has gone all carbon ...