Continuous carbon composite construction Aero-Ergo flat-top riser central section follows the natural arc of the arms with a 10-degree forward bend for more ergonomic climbing position and easier breathing Cable groove compatible with new Di2 systems w/ larger internal cable tunnel Reinforced and textured lever and stem clamping areas 31.8mm 420mm 80mm 125mm Carbon Carbon Road Drop CarbonUPC/EAN/GTIN: 400310082770