Stack and Reach Explained

This video explains the complexity of the stack and reach in bike fitting. In the video, you will see how with a fixed top tube length and a fixed stack value, you can still achieve different reach values. Using one of our bike fitting simulators, we locked the top tube and seat tube length. We adjusted the angles of the seat tube and head tube simultaneously. As the geometry of the frame goes from slack to, what you would call, aggressive, watch as the reach changes.