Disc specific design allowed for aerodynamic optimization of the frame and fork and a wheel/tire choice that would not have been possible with rim brakes.
HIDDEN CABLE ROUTING
Hidden Cable Routing
Unique design routes brake lines and Di2 cables through an opening in the front of the headtube, bypassing headset bearings. An integrated steering stop prevents damage to the cables and permits a full +/- 50 degrees of steering rotation (regular riding rarely sees more than 35 degrees of movement).
Stem spacers open so that you can adjust stem height without needing to pull cables.