Be careful as these bulbs generate a lot of heat and can destroy the connector. Also they draw more current and have been known to destroy the high/low beam switches. Better to go with PIAA bulbs. They offer increased illumination with standard wattage draw.
Thanks for the warning. I checked the switch and wiring load ratings before I first used the bulbs. This bulb draws 6.67 amp at 80 watt low beam and 8.3 amps on the 100 watt high. Both are well within the range of my system. I usually ride busy roads on the low, to minimize heat, but on long dark and empty roads have ridden 3+ hours on high with no problem. I do make sure all contacts are clean and have light coat of electrical contact lube.
Thanks for the link to German Parts and I will check with O'reilly, that will be better than mail order.