Any idea where I can find this bracket, or something similar, available for order in the US? I have an Abus Granit X-Plus 54 U-lock (which unfortunately doesn't include the mounting gear), and I'm trying to work out a good way to attach it to my bike. For the moment I'm using velcro strips to affix it to the top of the rear rack, but I need a better long-term solution as that's sometimes in the way.

Suggestions for an alternative are also welcome, of course. Please note, however, that the lock is too large (12-inch shackle) to mount inside the frame triangle.