SUM Ultegra Di2

What to decide, what to decide... Nothing simpler. With a bike offering such an obvious advantage in climbs, sprints and long sections of straight roads, the only question will be how magnanimous you want to be with your fellow riders. A cyclist-centric design approach ensures a frame that is both strong and responsive, offering handling that most aerodynamic frames cannot match. The Sum has a completely redesigned frame to maximize aerodynamic performance while remaining lightweight. Indeed, the design process of the Sum allowed us to eliminate any unnecessary weight in the new aerodynamic tube profiles, while maintaining maximum power transfer. The road is yours: the Sum will allow you to take the lead in the climbs, shine on the flat and dominate in the sprints.