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.
I have ran 1 on the 96 sporster for over a year and no problems .. Also got 1 for a buddy's dyna and np problem there either .. only run high beam when needed