Cinelli Saetta 2013 Road Bike Frame. Cinelli's explosive mid-range monocoque frame for the highly evolved amateur is now equipped with the Columbus monocoque Solida fork. Completely designed by the Columbus Carbon Lab for unparalleled reliability and efficiency in this weight division. The shape of the frame's joints, key points of structural stress, have been studied to minimise the level of the specific stress (Low Sigma Transition) in the transition points, significantly increasing the reliability and fatigue resistance of the frame. Top tube has been aggressively thinned out into a skeletal structure (Skeletal Efficiency Philosophy) with carbon material arranged in the paths of maximum stress. A Constant arc from the top tube to the chains stays has been designed in order to exercise the inherent laminate qualities of the material under vertical deformation for progressive control of the flexion of stays and top tube (Progressive Flexion Control) creating a noticeably smoother and more consistent ride quality.