Boat Overview
Boat Description
Kawasaki Ultra 310X: A Benchmark in High-Performance Jet Skis
1. General Information
The 2025 Kawasaki Ultra 310X is a three-seat, supercharged personal watercraft built for riders who want the fastest, most powerful jet ski Kawasaki has ever produced. At its heart sits a 1,498cc supercharged and intercooled inline four-cylinder engine, widely reported at around 310 horsepower, giving the Ultra 310X explosive acceleration and a top speed in the region of 67 mph (108 km/h). It is best suited to confident, experienced riders who enjoy open-water thrill riding, watersports towing and spirited day trips rather than newcomers to personal watercraft. A 79.9-litre fuel tank and roughly 168 litres of dry storage give it genuine day-long range and enough practicality to carry gear, drinks and safety equipment for three riders, while a 225 kg load capacity keeps performance in check when fully loaded.
2. Construction and Design
Kawasaki's engineering focus on the Ultra 310X centres on stability and control at speed rather than sheer top-end numbers alone. The hull and sponson design are shaped to keep the craft planted through hard turns and choppy water, while a semi-dry sump lubrication system and inducted water cooling keep the supercharged engine running consistently under sustained high-load riding. Direct drive from the engine to a 160 mm axial-flow jet pump, fitted with a 3-blade stainless-steel impeller, transfers power efficiently with minimal driveline complexity. Onboard, the full-colour TFT instrument display with smartphone connectivity brings car-like clarity to a machine that is fundamentally built around raw performance, and the Ebony/Neon Red colourway reinforces its position as the range-topping model in the Ultra 310 family.
3. Key Features
Supercharged 1,498cc engine: An Eaton Twin Vortices Series Roots-type supercharger with air-to-water intercooling and 16.8 psi maximum boost gives the Ultra 310X class-leading acceleration and towing power.
Electronic rider aids: Selectable Power Modes and Launch Control let riders tailor throttle response to conditions and rider experience, from smooth cruising to maximum-attack starts.
Large fuel and storage capacity: A 21.1 US gal (79.9 L) fuel tank and 44.5 US gal (168 L) of storage support long days on the water without sacrificing performance.
Full-colour TFT display: Smartphone-connected instrumentation keeps speed, fuel and ride data close at hand in a clear, modern interface.
Three-passenger seating: A 496 lb (225 kg) load capacity and reboarding-friendly layout make the Ultra 310X practical for family or group outings between high-speed runs.
4. Summary
The Kawasaki Ultra 310X is aimed squarely at experienced PWC riders and performance enthusiasts who prioritise outright speed and acceleration over cruising comfort, without giving up the fuel range and storage needed for a full day out. It suits buyers upgrading from a smaller or naturally aspirated jet ski, watersports and towing enthusiasts who want reserve power on tap, and anyone shopping for the most powerful model in Kawasaki's current Jet Ski line-up. Riders who want a more comfort-oriented layout for extended touring may prefer the related Ultra 310LX or 310LX-S, but for maximum acceleration and top speed in a three-seat package, the Ultra 310X remains Kawasaki's flagship choice.
Overview
Specs
Performance & Ratios
Engine: supercharged and intercooled 1,498cc inline four-cylinder (DOHC, 4 valves per cylinder) with an Eaton Twin Vortices Series Roots-type supercharger, air-to-water intercooler and maximum boost of 16.8 psi.
Propulsion: 160 mm axial-flow, single-stage jet pump with a 3-blade, oval-edge stainless steel impeller; DFI fuel injection with a 60 mm throttle body; electric start; direct drive from the engine.
Electronic rider aids: multiple Power Modes and Launch Control.
Seating capacity: 3 riders; maximum load capacity approximately 225 kg (496 lb).
Dry storage capacity: approximately 168 litres (44.5 US gal).
Curb (ready-to-ride, fuelled) weight: approximately 468 kg (1,031.9 lb); the Displacement field above records Kawasaki's estimated dry weight of 404 kg (890.8 lb).
Special feature: full-colour TFT instrumentation with smartphone connectivity.
Colour option: Ebony/Neon Red.
Base MSRP at launch: US$19,199, plus a US$630 destination charge (US$19,829 total before options).