This was the first of the larger stand-up Jet Ski produced by Kawasaki and dominated racing for a number of years. Although larger than the previous 300, 440 and 550 models a similar hull design was used with the same result: poor hook-up in most conditions without an after market intake grate. This intake grate was designed when all of the pro riders were riding this model Kawasaki, it will transform your boats performance in all water conditions, with increased pump loading and allowing you to keep full power even on those really tight turns