The Kawasaki Jet Ski Ultra 310 lineup is packed full of power. Courtesy Kawasaki Motors Corp., USA Kawasaki ’s new flagship Jet Ski Ultra 310 series personal watercraft are the most powerful ever, ...

Mr. Hicks, and most of those who have copied his quote since, never saw someone ride Kawasaki's new 310-horsepower jet ski, the Ultra 310.

The final Kawasaki Ultra is the 310 series that includes the 310X, 310LX-S, and 310LX. The 310 is by far the most robust option that comes equipped with a supercharged engine.

The Ultra 300X jet ski has been completely redesigned for 2011. It comes with an all-new supercharger and Kawasaki's Electronic Throttle Valve system.

Advertisement Kawasaki Jet Ski SX-R Kawasaki Motors Corp. Even with the craft’s now-hefty 551-pound weight, the power plant allows the SX-R to best Kawasaki’s flagship 310 hp Ultra 310R out of the ...

For 60 miles. That’s the very limit of the Kawasaki Jet Ski 310’s range, and I suspect it’ll be running on fumes when I bring it home.

Cantle made it easy on himself, securing a supercharged Kawasaki of his own—the Jet Ski Ultra 310R. With more than 300 hp, it has a governed top speed of 68 mph.

The 2017 Kawasaki Jet Ski range counts no less than seven models, from the entry-level STX-15F to the range topping Ultra 310LX.