Only available in EU 47/ US 12 and EU 48/ US 13 (at least from these guys) but at $140 for a $400 boot, you can't really go wrong.
Teknic Speedstar Boots. (http://stores.sportbiketrackgear.com/Detail.bok?no=2164)
*Disclaimer: I am not affiliated in any way with STG, I just like saving money, and their video reviews are pretty cool.