it's a Hayes and you need an adaptor for most forks and an adpator for the stock hub unless you buy an aftermarket one that already can accept the disc
Because Stav no longer does the mini business thing.
it's a long shot, but check http://www.hanebrink.net/index2.html I use to have their forks and they make an adaptor for theirs to run a stock hub. They may sell you one seperate.