I haven't had a reply yet from moto, but does anyone know if this can be used with an HID kit? Will the clear lense & HID project the light beam properly? Also want to know the lense material and depth, as I have some of my wiring connections of the HID kit stuffed into my headlight housing.
You can get HID conversions for just about anything. Just saw an article for a H4 kit earlier today...
http://www.webbikeworld.com/suzuki-dr650/hid-headlight/.
Short answer is "yes". You can get an HID for this assembly. The long answer is "your results may vary". These reflectors are not optimized for HID, so you "may" get better light output, but you may also get more glare.
My 2 cents is that I wouldn't try HID in a traditional reflector like ours... just a good Silverstar or similar, and a pair of auxiliary driving lights for high beams.