All of what GW said is correct, but this bit is the most important. Our v-strom headlights are so good because of the reflectors. In order to take advantage of the reflectors, any drop-in replacement bulbs must position the light source just right. Anything that doesn't will provide less effective lighting, and might well increase the glare you present to oncoming traffic.I know of no H4 LED replacements that have a true hi and low beam. All the ones I've seen just do bright and dim with zero attention to beam pattern. LEDs are not bright enough to provide the two pinpoint sources required and require more surface area.