The Sugino Zen Track Chainring is designed to help riders reach their maximum power in the smoothest and most efficient way possible. This chainring has been used by many Olympic and World Championship medalists. It is as smooth and stiff as it gets, helping turn all the watts you crank into the pedals into pure speed. The Zen name refers to the concentration it has on speed and nothing else. The Sugino Zen Track chainring is a must have for any track athlete.