Kawasaki Jet Ski Ultra 310X

Kawasaki JET SKI personal watercraft have a long history of high performance. While the JET SKI ULTRA 300X and 300LX are already known as powerhouses on the water,
Kawasaki engineers were still not satisfied. By increasing engine efficiency they were able to increase output of the supercharged engine to 310 PS* – the highest in JET SKI’s 40-year history – to ensure the JET SKI brand remains synonymous with personal watercraft supremacy.

2018 Jet Ski ULTRA 310X
2018 Jet Ski ULTRA 310X
2018 Jet Ski ULTRA 310X
2018 Jet Ski ULTRA 310X


1500cc In-line Four engine with TVS Roots supercharger delivers highest output in Jet Ski history: 310 PS


Hull balances strength and light weight to handle 310 PS output – High stability and responsive handling in both calm and rough water


Electronic throttle valves manage high power output efficiently, enable numerous riding modes: Electronic Cruise Control. Fuel Economy Assistance Mode. One-touch 5 mph Mode. Smart Learning Operation (SLO)-Mode


The models of the ULTRA 310 Series (except the ULTRA 310R – please see below) feature a 5-way adjustable handle that suits a wide range of riders and riding styles, allowing either standup or sit-down riding.


Ergonomics on the ULTRA 310 Series models were designed to comfortably accommodate three people, as well as facilitate both stand-up and seated riding


Immobiliser function incorporated into the ignition switch helps prevent theft. Works with both keys (full-power and SLO-mode versions).


Ridges across the bottom of the bow, Kawasaki Splash Deflectors deflect water splashing forward from under the hull. A fourth splash deflector mounted at the top reduces spray during high-speed turns. Whether turning or blasting straight ahead, at high speeds or low, the Quattro KSD minimises spray, allowing greater rider concentration.


This convenient system allows the angle of the jet pump nozzle to be controlled electrically (step-free adjustment range is +/- 8° from STD), making it easier for riders to adjust the attitude of the hull to suit water surface conditions and riding style.


Instrumentation accommodates the engine’s various riding modes, as well as a new Current Fuel Consumption (measured at 1 second intervals) function. External Water Temperature, Air Temperature, Clock, Time, Trip, Hour Meter, Tachometer (digital display or bar graph), Speedometer, Max Speed functions are available as before. * Instrument panel position and cockpit visor design were selected to ensure high visibility.


Smart Learning Operation (SLO)-Mode function allows newer riders to become familiar with the handling and response of this JET SKI watercraft at a more relaxed pace before unleashing the full power of the supercharged engine. Two separate keys (one for SLO-mode, one for full-power operation) make it easy for operators to know which operating mode they are using.

Engine Type 4-stroke In-Line Four
Displacement 1,498 cc
Bore Stroke 83 x 69.2 mm
Compression Ratio 8.2:1
Induction System Supercharger and intercooler …
Cooling System Inducted water
Fuel System Fuel injection: ø60 mm x …
Ignition System Digital
Starting Electric
Battery 12 V 18 Ah
Propulsion System Axial flow, single stage …
Impellor Type 160 mm 3-blade
Thrust 8,407 N {857.3 kgf}
Seating Capacity 3-Person
Weight Capacity NA
Fuel Capacity 78 litres
Oil Capacity 5.5 L
Storage Capacity 212 litres
Dry Weight 477 kg Curb Mass
Dimensions LxWxH 3,370 x 1,195 x 1,150 mm
Maximum Power 228 kW {310 PS} / 8,000 rpm .