I'm unable to verify what they're like inside, so assume they will need stripped down and Ultrasonic cleaning. This set had a very nice condition set float bowl covers and were perfect for the modification upgrade. Came off a ZRX with approx 25,000 Miles. Would made an ideal good spare set of complete carburettors to have on the shelf. Bought as seen for Parts & Spares because I haven't stripped them down.
If unsure please ask with your local Kawasaki dealership, research online to see exactly which model these are compatible with. Possible these are set of KEIHIN G460, but I can't verify that.