1140 hours on the engine is not uncommon. It is rare when high maintenance is practiced. I've seen much lower hour failures due to lack of maintenance. The saying "take care of your tools, your tools will take care of you" holds true most of the time. It sounds like you threw a rod. Pending on what the remains look like will tell a story. Metal transfer, bluing on the journals, rod is in several pieces etc... Think of it as an autopsy to find the cause of death. Your servicing dealer should be able to help with that and forward the results to Kawasaki. Normally if the engine is going to blow due to manufacturer defect it happens in the first 100 hours. At the very least you will know the probable cause of failure.
I know this is not the life line you were looking for but we need to find out the cause.