The Kawasaki Jet Ski® Ultra® 310R personal watercraft (PWC) is the perfect prescription for adventurous riders seeking a pure adrenaline rush on the water. Based on Kawasaki's popular Jet Ski Ultra 310X the R-model draws from decades of Kawasaki's championship-winning PWC racing experience to create the ultimate “sport" personal watercraft that's ideal for hard-core recreation and racing. Key Features may include: Supercharged DOHC inline four-cylinder engine produces a staggering 310 horsepower KX™ motocross-style electro-polished stainless steel handlebar enhances the 310R's sport riding capabilities while also providing excellent all-day comfort 12-position handlebar mount can be adjusted for reach and height to allow operation while standing or sitting and to suit a wide range of riders and conditions Sport seat offers a special support bolster and a grippy KX-motocross-like seat cover for hard sport riding Aggressive graphics reinforce the hard-core sport capabilities of the Ultra 310R Strong and light the 301R's deep-V hull offers superb straight-line tracking and precise cornering performance Industry-leading 56-gallon storage capacity lets you bring your gear with you 20.6-gallon fuel tank is the largest in its class providing tremendous range for long rides Separate keys for full power operation and Smart Learning Operation