2010 KAWASAKI Jet Ski Ultra 260X, Pre-owned 2010 Kawasaki jet Ski Ultra 260X. For those unfamiliar, the Jet Ski Ultra 260X packs a Supercharged, Fuel Injected Inline 4-cylinder 1500cc 4-stroke engine, making 260 water-gobbling horsepower. Good overall condition, with only 146 hours on the clock. Has reverse and re-entry step. New supercharged boats cost $15,000 or more these days. This is a great way to get on to a high-performance watercraft, for far less than half of new!.