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 SL500 Series How much light does GO emit? How far apart are the mounting holes on the basket / luggage carrier lights? Is it possible to connect two Flex Mount (RL700) front lights to one Flex Mount (RL700) generator? The magnets for the Hub Lights are hard to adjust correctly Comments 0 comments Article is closed for comments.