Cervelo S5 Ultegra Disc (2019)

The 2019
S5 is the outcome of a comprehensive redesign that married Cervélo’s
leading aerodynamics research/knowledge with an acute focus on the
rider’s experience and needs. First, we went back to the aerodynamics
drawing board and challenged ourselves to see every component’s shape in
fresh ways. But then, instead of continuing to refine components, we
changed our focus in two ways: (1) we considered entire zones on the
bike and (2) we minutely examined how bike and rider work as a total
aerodynamic system. Expanding our thinking this way gave our teams far
more design space in which to balance stiffness, handling, and comfort
while—always and above all—delivering fast. The result is the fastest
and most comfortable aero road bike Cervélo has ever created.

Images courtesy of East West Bikes - Fullerton, CA - USA