Headlights - Stromtrooper Forum : Suzuki V-Strom Motorcycle Forums
DL650A - 2017+ DL650A - 2017 (L7) and later

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post #1 of 3 Old 01-08-2019, 03:53 PM Thread Starter
Join Date: Jan 2019
Location: San Jose, California, USA, North America, Earth
Posts: 18

I am wondering why two different size for low and high beams? Why H7 and H9? Why don't they use two same type for high and low beams?
TaubBaer is offline  
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post #2 of 3 Old 01-08-2019, 05:18 PM
Join Date: Nov 2016
Location: Greenville, SC
Posts: 426
The H7 is 55W and the H9 is 65W. Maybe the H9 is brighter and better for high beams? That's all I got.
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post #3 of 3 Old 01-08-2019, 08:42 PM
Join Date: Aug 2009
Location: Albuquerque
Posts: 106
I am going to go out on a limb here and say that the H9 has a theoretically brighter light but the bulb has a shorter life than the H7. Because the low beam H7 is always on (in US models) it needs a longer life span than the lesser used high beam H9. Having only 300 miles on my new 2018 I have had little chance to test my lights but the one time I did I found that the high beam added nothing to distance or brightness but did light up the sides more. I shall be gathering the necessary tools for headlight adjustment in the near future and going to a dark deserted road and play with my lights. I do this with every bike hoping for an incredible difference between low and high beam and always end up disappointed.

Last edited by jack d; 01-08-2019 at 08:45 PM. Reason: additional info
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