The Stages Bike uses standard 31.8 clamp road handlebars. By using existing handlebar designs, all of the controls for the bike are removable and able to be installed on another set of handlebars. So long as the handlebars use a 31.8 clamp, you can use them on the bike. Aerobar extensions can also be added to the handlebars.
Note that while the brake levers are designed for a road bar, it is possible to use other styles of handlebars (such as a mountain bike style risers) using only the accessory remote shifters.