Originally Posted by DRONE
Not to put down PIAA--they make great products for motorcycles and their heavy duty bulbs are very tough. My HID light kit from Martin Fabrication uses PIAA bulbs. But . . . their H4 bulb has the same yellow color as the BMW bulb--about 4000k. It does not improve conspicuity. But I had a chance to swap bikes with a buddy last month and see my 6000k H4 Halogen Bulb from Luminics USA
in the rear view mirror and it's really brilliant silver white--very conspicuous in daylight. Like a shiny diamond. The one I got they call the "Pure Blue" bulb, not the "Krypton Blue". They only cost $35 for two bulbs.
This the product in question?