No new hubs I am aware of.
Look up RamMan, he manufactures new rotors for the KH setup. His design is a one piece rotor (the weak point in the KH design) and he has them available in regular 4” bolt pattern as well as 4.5” bolt pattern, with drilled and/or slotted options.
Not cheap, but well done. I believe they where around 375 for a pair.
