1999 Honda 400ex stock headlight diameter?

I'm looking into getting halo led lights on a 400ex but I don't know the diameter of the head lights. I would measure it myself but my bike is at the shop. Can someone measure their headlight for me please. http://m.myled.com/p5535-led-angel-eyes-car-light-6w-480lm-100mm-blue-light-ring-shape-9-30v.html?currency=USD

Call the Shop your bike is at.

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