How do I know if the light will fit my bicycle? Donna Post October 27, 2016 19:47 Updated Boulevard & Avenue have multi-fit stretch mounts Alley & Street Front (F) fits 22-32mm Avenue Rear (R) fits 10-32mm Related articles How do I know the difference between a front & back light? How many modes do the lights offer? How do I install my FlexFrame-U Bracket? How do I charge? Have the products been quality tested? Comments 0 comments Article is closed for comments.