2011 Kawasaki Jet Ski® Ultra® 300X

Jet Ski® Ultra® 300X

Jet Ski Performance Taken to a Whole New Level You power junkies know who you are. You’re hard-core, and you won’t settle for anything less than the most capable watercraft available. Well, Kawasaki has exactly what you need in the form of the new and supremely powerful Jet Ski® Ultra® 300X – the most powerful Jet Ski ever built, one packing 300 horsepower and all the massive, arm-straightening thrust that goes with it.