I have purchased this specific set 5 times and I have installed it on 3 tractors, a farm vehicle, and a motorcycle that I own. They are awesome. They have very good and powerful light. I chose these ones that have a cooler instead of a fan because I believed that they would get blocked and burned by the dust on the tractors. They are top-notch for me.

I put them on a Varadero 1000 MK2, plug and play, I only had to tie the lamp cable somewhere because it was bothering during steering. No rotation or resistance was needed because they are LED. They fit properly on the headlight and connected directly to the cable that connects to the regular H4 bulb.

Unlike the previous LEDs I had (G5), these emit a proper beam on the low beam due to the cover they have on the external LEDs. This way, they can be adjusted properly with the mirrors of the headlight and the low beam has a clear upper end in its beam. It emits a very bright white light.

It does not have a fan despite what is written in their description (I think), but it does not bother me, as long as it does not burn out over time. The truth is that after 1-2 minutes of operation, it is impossible to touch the heat sinks.

The bulb can be rotated 360 degrees in relation to the socket, so they can be installed on headlights that expect the low beam on the opposite side from what is normal, or expect the low/high beam to be on the right/left instead of up/down.

They come in a good packaging with proper protection, even gloves for their installation.

The review concerns the BMW F650 Funduro and ST.
The bulb (one position has the headlight) DOES NOT FIT together with the plastics (of the headlight) to be stabilized, resulting in it being located behind the headlight on the motorcycle frame. I removed the plastics and tried to put it further inside the mirror, but of course, the light does not hit where it should, resulting in scattering everywhere and not having a beam of light in front of the motorcycle but all around... The result is much worse than the worst I had imagined. Literally, YOU CANNOT SEE AT 5 METERS.

I took the risk and bought them even though they DID NOT ANSWER my question (on their website) about whether they are compatible with the F650 ST or Funduro. I decided to try and write the review. Maybe if it fit correctly, it would have proper light (although probably a bit weak with one bulb), but it definitely DOES NOT WORK FOR BMW F650 Classic (Funduro, ST, and possibly some Aprilia Pegaso if they have the same headlight). Be careful!

After some time...
Well, it worked out quite well after some improvisation (cut and sew) on the frame that holds the headlight. Installed properly, it has good light, better than the halogen (55 w/60w), not extraordinary but it does the job well with fewer watts. I think the temperature is quite high (the manufacturer claims it is correct), so I have also added a 40mm fan to be more sure. It hasn't given me any issues, if it fits correctly on your headlight and you don't expect it to turn night into day, then it's okay.