a bicycle sound generator manufactured using a thin , deformable , plastic material . the sound generator is wrapped around an attachment location , such as a bicycle fork , and secured using a fastener . in an exemplary embodiment , the fastener is a cable tie with a one - way tightening mechanism to prevent the sound generator from coming loose once it has been attached at the attachment location . the sound generator may be rotated about the attachment location to come into an engagement position where a free - end portion of the sound generator makes contact with the spokes of a rotating wheel . when no sound is desired , the sound generator may be rotated such that the free - end portion is disengaged from the spokes and produces no sound . graphical images , such as decorations , team logos , political messages and the like may be added to the sound generator .