Can't remember if the usk 9000 is the ones I bought, but if they are, they fit like a glove. They even have the same spades on the speakers to plug right in. Just replaced mine a couple of weeks ago.
[update]
I just checked my receipt and they are the USK 9000 from J&M. I bought mine from Cheap Cycle Parts because they had the cheapest price when I was looking for them back in January.
[/update]
Hay

Jimmyt