The product in Valkorado's link is a direct replacement for the H4 bulb, thus you keep the OEM lens/reflector assembly. The question I have is, will the huge heat sink on these bulbs fit inside the Valkyrie's headlight bucket? I didn't find dimensions. You also have the electronics package to fit in somewhere, which looks to be about the size of two Tic Tac containers side-by-side.
On the positive side, this is the first LED H4 I've seen that produces a precise light pattern, like a halogen bulb, with a reflector/lens designed for a halogen bulb. Although their web page doesn't indicate power usage (I don't get why this helpful piece of information is missing), the following Youtube video shows current measurements at 1.76A, which works out to around 22-25 Watts used, depending on voltage.
https://www.youtube.com/watch?v=ixYDE9vg1jQFrom the video's description:
"After riding my VTX 1800R for a while with the Opt7 led which was a huge improvement over the Halogen bulb I decided to start searching again for a better led bulb; the reason was because the Opt 7 output was all scattered and did not have a good cutoff line so in other words I was blinding the incoming traffic.
I decided on this Genssi Elite due to the arrangement of the led's simulating the positioning of the filaments in a Halogen bulb and I have to say it was a huge difference, the cutoff is really good and the illumination was amazing.
While comparing the Amperage draw the main difference is that the Opt 7 while on high beam has all four LED's on and only two for low beam, The genssi on high beam has the bottom row on both sides on and while on low beam only the two top rows on.
In conclusion the Genssi actually uses the housing to reflect the light output and not just more lighting to create the illumination and by doing that the output is better and the cutoff is just like it was meant to be creating a safer environment for the rider and preventing blinding the oncoming traffic."