I got these for my street bike to help me be more visible at night. They do a great job at that!
I'm afraid it throws off my tire balance. The issues with them are that I can't control when they are on because motion turns them on. Therefore, they run all day and only lasted 2 weeks on new batteries.
Very disappointed with the product. In my opinion they are a one time throw away light .
The lights are great when they work . They are all shipped in test mode and by the time we got them most of them were dead . They give you spare batteries but after trying to install them most of the lights didn't work again . They should be shipped with a plastic pull tab to activate batteries when you receive them . At least then you could get one full battery life out of each light before trying to change the batteries and damaging them . The boys run motocross at night under the lights got the lights for them for the last race , most of them didn't work .