The B2 is all new for 2013, combining the aerodynamic frame of the DA with a standard fork. The result is a no nonsense time trial and triathlon machine. Built with premium-grade UHC Advanced carbon fiber material, the B2’s frame is lightweight, efficient and perfectly shaped to shave seconds off your time. The aerodynamic shaping and internally routed cables give it a super-clean profile for slicing through the wind. Shimano's revolutionary Ultegra Di2 electronic shifting package and ultra-fast Felt TTR2 wheels complete this high-performance package.