They are generally readily available from Kawasaki dealerships. I bought my bike with one fitted. It was rubbish. It had been fitted by Chiang mai Kwakka, and was made of fibreglass. It fitted poorly and cracked before the first proper service. I complained and it was replaced (at my cost) by one made from polycarbonate. Fits and looks good and 20,000 klm later it still looks good...despite Kwakka service people scratching it when I had them replace sprockets and chain at the last service.