The SES Aero Stem features a refined shape and carbon laminate that bridges the gap between the touch points of the handlebar and the bike. Fully integrating and concealing all cabling from the shifters to the frame. IN-Route Stems are designed to be used with ENVE's IN-Route System. This includes ENVE IN-Route handlebars, IN-Route compatible headsets, and ENVE IN-Route forks, specifically.