How much does the CIO bike light weigh? Mille Stech Jensen November 08, 2017 14:41 Updated The bike light is 64 g. / 2.25 OZ The magnet is 8 g. / 0.28 OZ Related articles Are the lights waterproof? Does the light fit all kinds of bikes? What is the maximum angle for the fork and seat stay that CIO can be mounted on? Are the lights protected against theft? Comments 0 comments Article is closed for comments.