What is the maximum angle for the fork and seat stay that CIO can be mounted on? Mille Stech Jensen June 13, 2018 07:49 Updated If the angle gets above 35 degrees (measuring from vertical) the light will be pointing upwards but should still be visible. Related articles My CIO bike light is a bit noisy. What could be the reason? Are the lights waterproof? How many lumen does CIO have? Are the lights protected against theft? Does the light fit all kinds of bikes? Comments 0 comments Article is closed for comments.