Try and find a guy retailing as "southern cross sports" was very helpful when I needed parts for mine
He was on eBay and I think had a website of some sort....
anyone can go fast in a straight line,,,,
Team Crash "09"
TE310 2011 Husqvarna trail bike
WR125 2004 Husqvarna
try checking the part number for your rear caliper on this site
you should find all the relevant part numbers for the piston and seals etc as well. Copy & paste these part numbers into google - you should find a heap of links come up with these part numbers, but they could be from different model kawasakis. This is how you can possibly locate a suitable donor model bike which runs the same rear caliper as yours.....its a long shot but worth trying.
grey imports are a nightmare, they are often a domestic Jap model only and parts can only be sourced within Japan for these. This is one of the reasons that aussie importers for aussie models, refuse to deal with requests for parts for these bikes. Its a nightmare. Good luck with the search though
".....shut the gate on this one Maxie......it's the ducks guts !!............."
So that one is the same caliper/brake setup? You can find the same part number/s elsewhere for less more than likely, I have never bought anything from Motosport but I like the layout of the website & looking up part numbers is easy
Email some Kawasaki dealerships (& mention the small flat rate box so they know you know the actual shipping cost) all around & see what they come up with? There is a few on ebay that will get parts in too