These look the business...anyone tried them on a Katoom? Seems like the whole of the rear shell of the OEM headlight would have to go to enable the top one to fit (?) Or you would be back to using a custom fairing or the TT rally one to get enough clearance. There are other threads where this has been done. Perhaps one in the lower portion of a Euro light setup and retain the upper Halogen or convert it to HID too. It would not matter so much that the top lamp might not come on quickly for flashing purposes, as the bi-xenon would be on full when switched to Hi-beam anyway.