Fenix L2D on my helmet with bands cut from old inner tubes. Also, Night Rider duals on the bars. . . plenty of light and the helmet light works as a great attention getter and spotlight. I don't even notice the minimal weight and it's significantly useful- - -except when it's intensely foggy or drizzly and then it creates a white-out that actually hinders my vision. But in dry conditions it's a great addition.