Just wanted to comment that I picked up these based on your experience. I have gone through three sets of ballasts for HIDs in the 3 years I have had them. Not to mention many orders and returns of HIDs that claimed to be H4 equivalent but were not. So I new already key items needed: end cap on bulb to prevent light going directly out, two different light source points for regular versus high beam, not too large a back-end so as to interfere with the fork, etc. Was a little concerned still though because I do a lot of all-weather riding (read, rain) and I did not see you put the rubber hoods back on. But thought to give it a try.
(a) the bulbs are the exact replacement size with the high and low beam sources at the exact right spot for the designed reflector.
(b) the bulb comes out of the 3-prong socket holder. So it is super easy to insert and clip the socket holder, put the rubber boot back on, then insert and lock in the bulb. I had this feature on my HID's and it is really a requirement and nicety for use on the Burgman's with the rubber weather boots. (note: I had absolutely no problem clipping the sockets in. Can see if you did not take the bulb apart that it would be difficult to get the clip around the fan / heat sink)
(c) The beam height and spread is identical to the normal H4 bulb on both the right and left. The high beam doubles the intensity (turns on another pair of LEDs) but does not make as large a difference as with the incadescent H4's going from low to high (which also doubles the intensity and output using the same technique except with filaments).
(d) The beam is so much brighter and brilliant white that it makes a huge difference at night and during the day. Only issue I can see is if in heavy fog or snow. Well, at least the latter you should not be riding two wheels
(e) the little fans on the back of the bulbs do come on. But you would only notice this little whir before you start the bike. Once started, no chance. The radiator fan and engine noise drown any minute noise out. A concern is that if they need a fan and heat sink, and that heat sink is in contact with the rubber boot, will there be a melting rubber issue. Will see after a few months.
It was a simple install. Once I removed my old HID's and wiring, it was as easy as putting in a new incandescent H4 bulb and closing it back up. I only removed the top panel (and handle bar) tupperware when replacing bulbs.
So now I want to see what the reliability will be like in all road conditions and with time. My HID ballasts would go out within 6-9 mths. I tried 4 different brands and no luck with any. There is only one, true H4 replacement HID bulb (has a magnetic shield that moves to give you high beam). But just never found ballasts that worked in the Burgman 650 that lasted. The LED's have a small electronics module. But the connection and build seems weather tight and solid. Better than some of the thin HID ballasts I was getting.
Thanks for the heads up SpunN16.
(As for my order, I ordered off Amazon from Opt7 Lighting (manufacturer) that was fulfilled by Amazon. It took 5 days before I got a tracking number and told it was shipped. But then the std shipping I selected, which was supposed to take 7 more days, arrived the next morning via USPS delivery in my normal mail. Ordered 29 Dec and they arrived 6 Jan. And there was a holiday in between!)