They are "bluer/whiter" than the Sylvania Silverstar bulbs in the main head light. They are subjectively brighter than the stock bulb, but the real test will be some night time experiments.
"A word of advice; if anyone uses the phrase 'as the crow flies' in your presence, slap him immediately. You are bound to want to slap him some time later." Metaljockey
2009 BMW F650GS (The Cruise Basselope)
2009 Yamaha Zuma 125 (Sold due to new commute)
2000 BMW R1100R (Blaue Engel) (Traded)
2006 DL650 Euro Black, lightly customized (Godzuki) (Sold)