Can I mount a Flex Mount (SL500) light on an oversize handlebar (31,8 mm)? Mille Stech Jensen August 28, 2017 06:57 Updated Our instructions state that the lights fit handlebars of 10-30 mm, but with a bit of handyman tweaking, it is possible. Related articles Is it possible to connect two Flex Mount (RL700) front lights to one Flex Mount (RL700) generator? How long is the cable between the light and the generator on a Flex Mount (SL500)? Comments 0 comments Please sign in to leave a comment.