Inventory Unit Detail

2015 Kawasaki JT1500 310hp


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JT1500 310hp



The 2015 Kawasaki Jet Ski® ULTRA® 310LX personal watercraft (PWC) gives experienced enthusiasts exactly what they want: the ultimate combination of class-leading power, precise handling and superior luxury.

Key Features

• JETSOUND™ audio system, a first in personal watercraft, allows riders to listen to music while riding

• Contoured and scalloped three-passenger LXuryseat offers the ultimate in comfort for long-distance touring or casual riding, whether riding stand-up solo, seated or with passengers

• The industry’s first heat-resistant seat cover helps keep the rider and passengers cooler on hot days

• Hydroturf® striped pattern deck matting provides classy looks and superior grip

• Supercharged DOHC inline four-cylinder engine produces a staggering 310 horsepower

• Impeller features a 3-blade design that gives the 310X strong 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 Operation

310-horsepower Supercharged Engine

• 1,498cc, liquid-cooled inline four-cylinder engine

• Eaton TVS constant-displacement supercharger and liquid-cooled intercooler boost performance and reliability

• Intake manifold is shaped for optimum low-mid range power

• Cast pistons feature ring land V-grooves for superior oil retention

• Hardened nickel 33.4mm intake and 28.3mm exhaust valves offer superior reliability

• Two-layer oil cooler offers efficient cooling

• Large cam chain increases reliability in a supercharged engine application

• Reinforced crankcase adds to engine’s durability and reliability

• Fuel pump provides superior fuel flow volume

• Thick water jackets enhance cooling performance

• Check valve system between the cylinder jacket and water muffler that shuts water flow off above 2,000rpm, to keep the cooling water inside the cylinder jacket for optimum cooling performance

• Two piston cooling oil jets increase piston cooling

• Oil pan features baffle plates to prevent oil slosh during tight turns or extreme acceleration/deceleration

• Crankcase oil return holes offer quick oil return to the oil pan

Eaton Twin Vortices Roots-type Supercharger

• Four-lobe, constant-displacement design offers significant performance increase over standard roots-type unit

• System force-feeds the engine two liters of air with every revolution, providing a constant supply of high-pressure intake air at all rpm

• Delivers compressed air continuously, not in waves, for smoother power delivery

• Produces large amounts of boost even at low rpm for instant and powerful acceleration right off of idle

• Provides a flat and linear torque curve with mellifluous, lag-free power across the entire rev range

• Produces more low-rpm boost than competitive or aftermarket systems, with a maximum of 17psi of boost pressure

• Two different air bypass valves are used to prevent over boosting at low and medium rpm

Air-to-Water Intercooler

• Efficiently cools high-pressure intake air – cooler air is denser and makes more power

• Liquid-cooled intercooler design maintains consistent thermal performance

Digital Fuel Injection System

• High-flow fuel injectors with four orifices are fitted for combustion efficiency

• Single throttle body features a large, 60mm bore diameter


• 4-into-2-into-1 exhaust system routes the exhaust pipe upward and allows the smoothest path for exhaust gases, maximizing exhaust efficiency

160mm Jet Pump

• Large-diameter, race-developed 160mm jet pump efficiently converts the Ultra 310LX’s massive horsepower output into instantaneous thrust

• Pump is designed to deliver consistent output and good “bite” even in rough water conditions

• Impeller features a 3-blade design that gives the 310LX increased acceleration performance at the hit of the throttle

• Eight-vane intake guides and regulates the flow of water to the impeller for consistent, efficient and powerful propulsion

Ride Plate

• Features a groove from the center to the rear of the plate to enhance straight-line tracking

Electronic Trim Control System

• Allows the angle of the jet pump nozzle to be controlled by the rider to adjust the attitude of the hull to suit water surface conditions and riding styles

• Adjustment range is plus or minus 8 degrees from standard

Electronic Throttle Valve (ETV) with Cruise Control

• Convenient electronic cruise control smoothly holds a set speed from five mph up to top speed

• Accelerator Position Sensor (APS) converts throttle lever input to an electronic signal that’s used to control the throttle valve via an electric motor for crisp and smooth throttle response

• Redundancy in the system helps ensure control is maintained in case of failure

• One-touch, push-button five mph mode allows hassle-free no-wake zone riding

• Fuel Economy Assistance mode revised for significant fuel savings and increased range

• Economical Riding Indicator mode can be viewed on a graph on the LCD info screen

• Eco Mode reduces and smoothes engine performance while conserving fuel

Strong, Light Hull Design

• Designed to emulate the performance of Kawasaki’s IJSBA championship-winning race machines

• Reinforced inner bow is extremely light with ample strength to handle the engine’s power output

• Exemplary straight-line tracking and responsive handling in both calm and rough-water conditions set performance benchmarks for the class

• The lower hull is specially designed to distribute the engine and power delivery loads over a wide area

• Deep-V hull design enables a steep bank angle for motorcycle-like turning performance. This reduces the lateral G-loads imposed on riders during turns, allowing them to better concentrate on riding

• The 22.5-degree V-angle at the bottom of the hull helps reduce unwanted spinouts during sharp turns

• Delivers the neutral handling and turning characteristics for which Kawasaki Jet Ski watercraft are famous

• Bottom of the hull slants upward steeply from the center section to the bow, so the 310LX can penetrate swells and waves with less shock, pushing through waves rather than bouncing over them at high speeds

• Integrated sponsons extend from the hull, providing wallow-free straight-line performance and contributing significantly to the 310LX’s excellent maneuverability while helping to retain the narrow hull design

Quattro KSD

• The 310LX’s Kawasaki Splash Deflector uses three bottom-mounted ridges and an additional deflector mounted at the top to deflect water splashing forward from under the hull

• Whether turning or straight-line riding at any speed. the Quattro KSD minimizes spray, allowing greater rider concentration

Kawasaki Smart Steering®/SLO Mode

• Kawasaki Smart Steering® (KSS®) monitors steering input and engine speed and, when certain conditions are met, intelligently raises rpm to help initiate a turn

• Smart Learning Operation (SLO) allows newer riders to become familiar with the handling and response of this Jet Ski watercraft at a more relaxed pace

• Two separate keys, one for SLO mode and one for full-power operation, help prevent confusion over which setting is in use

Comfort and Convenience

• Contoured and scalloped three-passenger LXuryseat offers the ultimate in comfort for long-distance touring or casual riding, whether riding stand-up solo, seated or with passengers

• The industry’s first heat-resistant seat cover helps keep the rider and passengers cooler on hot days

• Passenger handrail is located in an ergo-friendly location to reduce passenger fatigue and features a handle for better grip

• Ergonomic deck design gives plenty of legroom

• Hydro-Turf® striped pattern deck matting provides classy looks and superior grip

• Left-side reverse lever is ergonomically designed for easy operation

• Quick and easy hose connection allows a simple method to flush sea water out of the engine

• JETSOUND™ audio system, a first in personal watercraft, allows riders to listen to music while riding

• Optimally curved mirrors have been revised for a wider rear view

• Mirrors are mounted to the upper deck via brackets

Capacious Storage

• The Ultra 310LX offers a class-leading 56-gallons of total storage capacity

• Large-capacity, fully sealed storage area with detachable storage tray offers ample room for recreational equipment

• A detachable drink holder with space for two drink bottles is mounted on the center console

• Compact integrated underseat storage area is Ideal for small items like a ski rope

Extra-large Fuel Capacity

• 20.6-gallon fuel tank boasts more capacity than any machine in its class, extending range

Digital Instrumentation

• Easy-to-read LCD screen features an easy-to-read face design

• Instrumentation includes a fuel consumption function, revised boost meter scale, riding modes, external water and air temperature, clock, time, trip and hour meters, tachometer (in digital or graph displays), speedometer and max speed functions

• ECO Indicator shows the rider when the speed and throttle opening is in the 310LX’s most efficient range

  • Engine: Supercharged and intercooled, four-stroke, DOHC, four valves per cylinder, inline four-cylinder
  • Displacement: 1,498cc
  • Bore x Stroke: 83.0 x 69.2mm
  • Compression Ratio: 8.2:1
  • Induction: Eaton Twin Vortices Series Roots-type supercharger with air-to-water intercooler
  • Maximum Horsepower: 310 hp
  • Maximum Boost: 16.8 psi
  • Cooling system: Inducted water
  • Fuel System: Digital Fuel Injection (DFI®)
  • Ignition: TCBI with digital advance
  • Starting System: Electric
  • Lubrication: Semi-dry sump system
  • Coupling: Direct drive from engine
  • Propulsion system: 160mm jet pump, axial-flow, single stage
  • Impeller: Three-blade, oval-edge stainless steel
  • Thrust: 1,890 lb
  • Fuel Capacity: 20.6 gal
  • Oil Capacity: 6.0 qt
  • Seating Capacity: Three-person
  • Overall Length: 132.7 in
  • Overall Width: 47.0 in
  • Overall Height: 45.3 in
  • Curb Weight: 1,073.8 lb
  • Load Capacity: 496 lb
  • Storage Capacity: 56.0 gal
  • Color Choices: Ebony / Candy Lime Green
  • Warranty: 12 Month Limited Warranty
  • Kawasaki Protection Plus (optional): 12, 24, 36, or 48 months



Engine Type
Supercharged and intercooled, four-stroke, DOHC, four valves per cylinder, Inline four-cylinder
1,498 cc
Bore and Stroke
83.0 x 69.2 mm
Inducted water
Compression Ratio
Fuel System
Digital Fuel Injection (DFI®)
TCBI with digital advance


Dry Weight
Curb Weight: 1,073.8 lb.
Fuel Capacity
20.6 gal.
45.3 in.
132.7 in.
47.0 in.
Oil Capacity
6.0 qt.
Rider Capacity
Storage Capacity
56.0 gal.

Drive Unit

Three-blade, oval-edge stainless steel
160mm jet pump, axial-flow, single stage
Direct drive from engine


Ebony / Candy Lime Green
12 Month Limited Warranty