Built around Shimano's class-leading Dura-Ace Di2 groupset and rolling on DT SWISS ARC 1600 carbon wheels, the CF5 framed REACTO PRO has all the key ingredients for a top-level road bike. Thanks to the changes we have made to the Generation V frameset, the PRO sets new standards with its impressive air-slicing capabilities and low weight, as well as its enhanced riding comfort — particularly noticeable on rougher road surfaces.