I met my riding group today and one of the stops was Cycle City. That's the main Kawasaki and Harley dealership here. The owner has a small museum of bikes at the top of the building, you can see it from the freeway near the Honolulu Airport. One of the employees at Cycle City is a member of our group and he arranged for us to get into the vault.
Here are a couple of pictures. One of these bikes is a triple - and you might be surprised to see which one. It's the cruiser - a Harley? I'm not sure, didn't spend much time looking at it but thought "that's an interesting triple." The bike I'm standing next to is a five cylinder, I guess it was created by Allen Millyard.