They appear to be exactly the same lamps as the Vision X Solstice but quite a bit cheaper? I too had exactly the same problem with the lamp body to bracket screw vibrating loose on my Vision X version and Loctite was the also the best solution. Moral is, if you get some, put Loctite on the threads from the outset.

If the CREE lamps are the same the Vision X, then make sure you do get the spot beam. The fog beam is next to useless as a driving lamp and the eliptical 15/45 beam isn't that much better.

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