2014 Kawasaki Jet Ski Ultra 310 LX
• NEW JETSOUND™ audio system, a first in personal watercraft, allows riders to listen to music while riding
• Contoured and scalloped LXury three-passenger seat offers the ultimate in comfort for long-distance touring or casual riding, whether riding stand-up solo, seated or with passengers
• NEW the industry’s first heat-resistant seat cover helps keep the rider and passengers cooler on hot days
• NEW Hydroturf® striped pattern deck matting provides classy looks and superior grip
• UPGRADED Supercharged DOHC inline four-cylinder engine produces a staggering 310 horsepower; It’s the most powerful production PWC in history
• UPGRADED Impeller features a revised 3-blade design that gives the 310X greater initial acceleration
• Strong and light, the 310LX’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
• Left-side reverse lever is ergonomically designed for easy operation
• Separate keys for full power operation and Smart Learning Operatio


2014 Kawasaki Jet Ski Ultra 310 LX

Discerning watercraft enthusiasts know better than to fall for flashy graphics splashed over questionable engineering when they can have the perfect blend of performance and top-of-the-line quality backed by years of know-how from the people who introduced the sport of personal watercraft recreation in the first place, Kawasaki. The 2014 Jet Ski® ULTRA® 310LX PWC gives those experienced enthusiasts exactly what they want: the ultimate combination of class-leading power, precise handling and superior luxury.


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2014 Kawasaki Jet Ski Ultra 310 LX

A Luxurious 3-Passenger Water Rocket with JETSOUND!

Discerning watercraft enthusiasts know better than to fall for flashy graphics splashed over questionable engineering when they can have the perfect blend of performance and top-of-the-line quality backed by years of know-how from the people who introduced the sport of personal watercraft recreation in the first place, Kawasaki. The 2014 Jet Ski® ULTRA® 310LX PWC gives those experienced enthusiasts exactly what they want: the ultimate combination of class-leading power, precise handling and superior luxury.

Ultra 310LX’s deluxe appointments are obvious: Large chromed trim pieces, a special paint scheme and Kawasaki’s upgraded heat-resistant three-place LXury seat are standard equipment on the Ultra 310LX. But for 2014 the Ultra 310LX sets a new standard in luxury watercraft with the all-new JETSOUND audio system as a standard LX feature. JETSOUND allows riders to listen to their favorite music while touring their favorite waterways.

The JETSOUND system is a bold move, but that should hardly come as a surprise. After all, who else would have the confidence to plant a supercharged inline four-cylinder engine capable of a brawny 310 horsepower  – the most power in watercraft history – into a precise-handling luxury hull designed to haul three adults in supreme comfort while carrying a class-leading storage payload? Kawasaki did, and the Ultra 310LX epitomizes the perfect blend of luxury and performance. That’s how legends are made.

With 310 horsepower1 on tap, the Ultra 310LX’s DFI® (Digital Fuel Injection)-fed, DOHC, 1,498cc inline four-cylinder engine puts all other luxury watercraft to shame, and its race-derived hull design easily carves precise turns in calm or rough water.

Ultra 310LX’s fuel-injected, DOHC, inline four-cylinder engine offers tremendous thrust and like no other PWC powerplant available thanks to its roots-type Eaton Twin Vortices Series (TVS) supercharger, which features a pair of four-lobe rotors to boost engine output more efficiently than any other production watercraft forced-induction system on the market. The key lies in its fixed-displacement design which produces large quantities of boost at all rpm, from idle to redline, giving the Ultra 310LX a flat torque curve and linear power across the rev range.

Ultra 310LX’s seamless power delivery is due to its ability to channel compressed air through the engine at a steady rate, instead of in waves, as other superchargers do. And its liquid-cooled intercooler helps to cool the compressed intake charge as it enters the combustion chambers. Cooler air equals denser air, which means less power is lost to performance-robbing engine heat.

Several other key revisions combine to bump the Ultra 310LX engine to the next level. Its new-and-improved engine output is achieved through friction-reducing mechanical revisions as well as improvements to several components for added power and durability. For example, the 310LX now features a reshaped intake manifold that is longer and slimmer to increase low-mid range power, while power and greater fuel efficiency are achieved via a new fuel pump with a greater flow volume than the previous unit. Kawasaki also made revisions to the Fuel Economy Assistance mode in the Electronic Control Unit (ECU), which significantly increases range for long-distance riding.

Ultra 310LX engine was built from the bottom to top for long-lasting durability in a supercharged application. Kawasaki engineers were relentless in their pursuit to take that admirable quality to higher levels, and going through the 310LX engine with the proverbial fine-toothed comb yielded several significant revisions. For starters, the 310LX’s pistons have a V-groove added to the second ring land (between the top and second ring grooves) for more consistent oil retention at high loads. To increase piston cooling, the oil jet system that cools the undersides of the piston crowns has also been revised to use two jets per piston rather than just one for enhanced performance. Additional baffles in the oil pan to prevent oil from accumulating on one side of the pan during tight turns or sudden acceleration or deceleration, and the crankcase also has larger return holes to facilitate oil return to the pan.

The engine water jackets are thicker for increased cooling performance, although they still feature a check-valve that opens when the engine is running but closes when it is stopped to keep the engine cooler without over-cooling. The 310LX also receives a knock sensor that improves engine protection by retarding ignition to suppress abnormal combustion – or engine knock – if it should occur. The system activates a buzzer and the condition is indicated on the instrument panel to warn the rider.

A perfect example of Kawasaki’s engineering know-how lies in the Ultra 310LX’s super-efficient oil cooler, which helps minimize engine temperatures by circulating oil between two cooling jackets. The result is 310 class-leading horsepower that’s also stone-reliable.

An impressive collection of futuristic electronics are standard on the Ultra 310LX. Naturally, Kawasaki’s high-tech Electronic Control Unit (ECU) is the command center of the entire system. The ECU coordinates the injectors and throttle bodies of Kawasaki’s highly advanced DFI to route the optimum amount of air/fuel mixture into the combustion chambers with help from the Electronic Throttle Valve (ETV) system (which converts throttle lever inputs into electronic signals that are then passed on to the throttle body).

Ultra 310LX’s technologically superior rider aids also include a range of varied riding “modes” such as Fuel Economy Assistance mode for maximum economy during slower going and a one-touch 5 mph mode for hassle-free use in no-wake zones. There’s also a convenient Electronic Cruise Control system for steady cruising speeds when touring and a Smart Learning Operation (SLO) mode, which allows newer riders to become familiar with the high-performance handling traits and exhilarating throttle response of the Ultra 310LX at a more relaxed pace. The electronics package also includes a smart Economical Riding Indicator on the digital dash display, which alerts the rider when the Ultra 310LX engine is operating in the most fuel-efficient manner, such as when planing at a speed where hull resistance is substantially reduced.

Electronic Trim Control (ETC) is another example of the advanced technology that Kawasaki engineers have packed into the Ultra 310LX. The ETC controls the nozzle angle of the 160mm jet pump to adjust the hull attitude to suit both water surface conditions and riding style. The system has a plus-or-minus range of eight degrees, and it allows the Ultra 310LX’s hull to take the fullest advantage of its razor-sharp turning characteristics.

An advanced impeller design is new for the 310 models for 2014, with revised blade angles for better acceleration out of the hole. During acceleration, when cruising or at high speed, horizontal guide “vanes” on the propulsion grate improve hull tracking and reduce cavitation during acceleration for better hook-up. It’s just one more detail item that adds up to the most advanced production watercraft propulsion system in the industry.

The Ultra 310LX’s race-derived, fiberglass-reinforced plastic hull is meticulously designed to be both incredibly strong and surprisingly light. Special reinforcements inside the hull help it to retain strength so that its overall thickness can be optimized for light weight, which aids in maneuverability. The hull also features an ingenious cleaning system with a two-circuit design, with each circuit utilizing a dedicated flushing port for easy maintenance. Edgy-styled contours and nose trim combine to give the Ultra 310LX’s bow a sleek and aggressive look.

But when you’re the king of luxury watercraft, luxury has to be king, and the Ultra 310LX’s cockpit and rider accommodations are as plush as they come. Kawasaki’s new JETSOUND audio system simply takes the Ultra 310LX’s luxury to another level.

With its 2 x 20 Watt-rated amplifier and pair high-quality 30-Watt speakers, the JETSOUND system is ready to rock. It’s practically a given that the JETSOUND would be iPhone and iPod compatible (the devices can be secured in the provided waterproof wet bag and stored in the glove box), but as an added feature it can also play music from a USB memory stick (up to 4 GB), which can be plugged into an adapter located inside a waterproof aluminum case in the glove box. Volume and song selection are easily controlled by an audio controller on the handlebar pad. The JETSOUND reconfirms the 310LX’s status as top of the pops in luxury watercraft.

Ultra 310LX’s LXury seat is designed for the ultimate in rider and passenger comfort. Its scalloped and contoured two-tone saddle offers generously thick padding that’s extraordinarily luxurious. For 2014, the Jet Ski Ultra 310X LE features the industry’s first heat-resistant seat cover to help keep the rider and passengers cool on hot days. New passenger handrail positioning places the handrail in a higher, more natural ergonomic location to help reduce passenger fatigue, and the handrail is also reshaped for better holding power.

Front and center is a high-visibility instrument panel with a new all-LCD info screen design that’s not only futuristic but also easier to monitor than ever. Aided by a visor for easier viewing in sunny conditions, the highly legible LCD display boasts a new face design with a new fuel consumption function that can display gallons per hour or gallons per minute, a boost meter scale and riding-mode displays along with a range of other functions, including clock; time, trip and hour meter; digital or bar-graph tachometer; water and air temperature gauges; speedometer and max-speed functions. Keeping track of the Ultra 310LX’s vital signs is a cinch.

The Ultra 310LX’s ergonomic details are clearly comfort-oriented. Its handlebar, which features a standard GPS-mountable handlebar pad that allows the mounting of a wide range of popular GPS devices, falls in a natural ergonomic position but is also adjustable to five different positions so it can fit a wide range of riders and riding styles. The wide bar offers plenty of leverage for easy maneuverability, and that makes long rides more comfortable. New gun-grip style handgrips offer a more natural feel for reduced hand fatigue as well as sportier looks.

Ultra 310LX’s hull-mounted mirrors and mirror brackets are also new. The revised mirror curvature gives a wider view for increased rearward visibility. A two-piece seat offers spacious accommodations for a rider plus two passengers, and its narrow front facilitates sitting or standing when the Ultra 310LX is ridden solo.

And Kawasaki engineers didn’t stop there. The Ultra 310LX’s deck design gives all the legroom they need for ideal comfort, and its unique deck goes a step beyond in the luxury department with Hydroturf® striped pattern deck matting that offers superior grip as well custom look. A reverse lever on the left side of the craft features is also ergonomically designed for easy operation.

With 20.6 gallons of fuel capacity – the most in its class – the Ultra 310LX offers plenty of range for long-distance rides. Up front, a handy storage bin with a generous 54 gallons of capacity is located under the front cowl, and dual drink holders keep refreshments within easy reach. Total combined storage capacity for the Ultra 310LX is an industry-leading 56 gallons. You really can take it with you!

The Kawasaki Jet Ski name is synonymous with high-quality personal watercraft, and the Jet Ski Ultra 310LX PWC is synonymous with high-class luxury and performance.

2014 Kawasaki Jet Ski Ultra 310 LX Specifications

Supercharged and intercooled, four-stroke, DOHC, four valves per cylinder, inline four-cylinder
1,498 cc
Bore x Stroke
83 x 69.2 mm
Compression Ratio
Eaton Twin Vortices Series roots-type supercharger with air-to-water intercooler
Maximum Horsepower
310 hp (Horsepower measured in PS at the crankshaft under controlled conditions. Actual performance may vary.)
Cooling system
Inducted water
Fuel System
Digital Fuel Injection with 60mm throttle bodies
TCBI with Digital Advance
Starting System
Semi-Dry Sump system
Direct drive from engine
Propulsion system
160mm jet pump, axial-flow, single stage
Three-blade, oval-edge stainless steel
1,890 lbs.
Overall Length
132.7 in.
Overall Width
47.0 in.
Overall Height
45.3 in.
Curb Weight
1,073.8 lbs.**
Load Capacity
496 lbs.
Storage Capacity
56 gal.
Fuel Capacity
20.6 gal.
Oil Capacity
6.0 qt.
Color Choices
Ebony / Candy Lime Green
12 months
Good Times™ Protection Plan
12, 24, 36 or 48 months
Maximum Boost
16.8 psi