Don't look at this bulb directly, you'll see spots for the next 10 minutes. Lawdy, this sucker is bright. Much brighter than a standard halogen bulb. I previously used PIAA in my Harley and am quite happy with it. Now I've put one in my old KZ and the head light is like the Death Star!
I wish these bulbs cost less. But the brightness and white color of the light produced is superior to my stock bulb. The bulb itself seems to last only about 3 to 4 years. But I can see farther and wider into the night. That is why I keep buying them. I commute and ride almost year round.