Felt's world-leading IA 2.0 paired with Shimano's top-of-the-line Dura-Ace Di2 group. Race-ready and dialed for maximum speed.The latest version of the IA 2.0 platform paired with Shimano's leading Dura-Ace Di2 group and aero wheelset. Shimano's 12-speed group offers the crisp shifting and the reliability for which Dura-Ace is known. Component updates bring wireless shifting and an easier approach to keeping the bike tidy without extra cables. A wide gear range is dialed for various training and race course profiles.