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 What is the maximum angle for the fork and seat stay that CIO can be mounted on? NOVA What is the maximum diameter that the CIO bike lights can be mounted on? Does the magnet mount on flat spokes? Legal Requirements Comments 0 comments Article is closed for comments.