Appears to be the most ideal spec to try on my Newport.
https://www.bulbsdepot.com/457523.html
I'll mount a pair. Maybe even a DPDT on-off-on for single/dual choice. 4000k is whiter than my current 3000. 710 lumens is brighter than my 620. 25 degree spot will throw more of that brighter whiter light down the road than my 35 degree current one.
I wonder if I had such good luck running these for a year is that the relatively huge heat sink (for the form size) hanging out in the breeze ahead of a 30mph bike for most of its working life keeps it much cooler than it was even engineered for.
I will honestly try to post a few pics of the road this spring (edited)