High Density Discharge headlights (HID headlights) have become increasingly popular in the marketplace. The popularity of these headlights has come from the many benefits that they offer riders. This is especially true among motorcycle enthusiasts. However, as many cosmetic benefits as they have, they also have an incredible amount of functional benefits, as well. Because the technology used to be expensive, the lights adaption rate was slowed in thee early 90's. However, the price has come read more..