Thinking about upgrading my H4 headlight bulb while I'm changing out the housing. What do you guys run ? the stock buld doesn't impress me on my 09 FXD

 

Sylvania or PIAA bulbs
I used a Sylvania in the past, much better than stock

 

http://www.piaa.com/Powersports/bulbs.html
You want an anti vibration bulb.
H4ST from Sylvania

 

What housing you changing to? If you go to the 7" ebay light I suggest the truk lite LED and be done with it.

 

+1 on Sylvania

 

Mikeurig... excuse my ignorance but for the anti-vibration Im assuming the one that will fit my 07 Street Bob would be "
H4 SUPER PLASMA GT-X ANTI VIBRATION - TWIN BEAM"

 

Gambler72:
I believe they all are twin beam. PIAA shows each bulb wattage as 60/55W = 135/125W and 60/55W = 110/100W
2 reviews on Amazon.com say the bulbs didn't last that long, 7000 miles for one person and 6 months for the other.

 

I use nothing but PIAA H4 Xtreme White Plus Anti-Vibration bulbs in my Harleys. (60/55W = 110/100W). I've installed them 3 years ago and haven't had one burn out on me yet.

 

my piaa lasted less than a year they get really hot

 

i use 80/100 h4 bulb and never any issues with the harness and the light output is much better