It does not affect the headlight intensity. The reason why it's labeled offroad only is because it reflects quite a bit of light back onto the windshield at night. Not a problem if you're riding in town, but depending on the rider it could be distracting/annoying and possibly impact your night vision in unlit, pitch dark areas at night. If I had to buy again, I'd go for the Cee Bailey unit. It sits a lot closer to the headlight so no reflection onto the windshield. But the Yami unit does look cool and is easy enough to remove when not needed.