Throw a leg over Cannondale's SuperSix EVO Ultegra 4 and hang on! Narrow down and top tubes provide an aerodynamic advantage, while the lightweight Ballistec carbon maximizes strength and stiffness for increased efficiency. Pair that with a dialed women's-specific geometry, and the EVO is one of the quickest, most-responsive bikes you'll ever ride. The parts spec ups the ante even further, with fast Mavic Aksium wheels, a light, stiff Cannondale Hollowgram Si crankset and Shimano's crisp Ultegra 11-speed drivetrain. Cannondale's own feathery aluminum components and a supportive Fizik saddle help you rack up the miles in comfort.