After investigating the lights in the link, they appear to be re-branded HSUN lights. If you are not in America (and the delivery cost from same is prohibitive) then these are the same lights, albeit cheaper.
I bought them for the Hi Beams and will be fitting them this weekend.
They arrived very will packaged and look well made.
I coudn't help myself. I just fitted them. This is on a 2008 K1200GT by the way.
Fitting is a bit of a squeeze, it helps if you have small hands. Popped out the old bulbs, took the collar off the new LEDS, fitted that, and then went to put the new bulbs in. They have a bayonnet fitting into the collar (slide in and twist). This aligns the LEDs so that the two on the bulb are on a horizontal axis. I slid the bulb in and it wouldn't twist. I eventually found that the small wire retaining clip on the bulb holder was getting caught in the aluminium fins of the bulb. A quick bend with a long screwdriver, to splay out the wire where it is "high" was enough to allow the bulbs to be inserted and rotated. It's easier to do that to describe. You will know when its right as the bulb will seat, and the LEDs, when viewed from the front will be horizontal.
Both bulbs were installed and the original dust covers put back on (after ensuring that they both light and the fans operate. If they don't light, swap the plug around).
The light is really something. It now matches the Xenon low beam in colour. I can't wait to see the result in the dark. I don't have to worry about light thow or scatter as Hi-beams are only used when there is no oncoming traffic. The LEDs also appear to be at the same point on the bulb as the old halogen filiment, so the reflectors should work as intended. And as they are endorsed by Pirates lair, then I'm pretty sure they are good.
A definite improvement.