2025 Kawasaki JET SKI ULTRA 310X: Supercharged Open-Water Performance The 2025 Kawasaki JET SKI ULTRA 310X combines high-output acceleration with the comfort, storage and stability needed for longer days on the water. Its deep-V hull, spacious three-person layout and sophisticated electronic controls give this flagship personal watercraft a versatile character suited to spirited solo riding, touring and recreational use. Supercharged Power and Confident Control At the heart of the ULTRA 310X is Kawasaki’s supercharged and intercooled 1,498 cc inline four-cylinder marine engine. The responsive four-stroke powertrain is paired with selectable power modes, allowing the rider to tailor performance to different experience levels and riding conditions. Kawasaki Launch Control Mode helps manage trim during hard acceleration, while Kawasaki Smart Reverse with Deceleration adds intuitive low-speed manoeuvring and controlled deceleration. The ULTRA hull is engineered to deliver composed handling in rougher water without sacrificing agility. Key Highlights Supercharged marine engine: Delivers rapid acceleration and abundant power for open-water riding. 7-inch TFT display: Presents key riding information on a clear, full-colour screen with multiple display modes. Kawasaki Smart Reverse with Deceleration: Supports easier docking, reversing and low-speed control. Launch Control Mode: Automatically manages trim for more controlled acceleration from a standing start. Large-capacity storage: Multiple storage areas provide useful space for safety gear and day-trip essentials. Rearview camera: Improves visibility behind the watercraft when manoeuvring or monitoring the surrounding area. Comfort for Full Days on the Water A broad, tiered seat accommodates up to three riders, while the generous deck layout provides room to move comfortably. Adjustable electronic trim lets the rider fine-tune the craft’s attitude, and cruise control can reduce effort during longer, steady-speed runs. The ULTRA 310X is designed for riders who want serious supercharged performance without giving up practical touring features. Its stable platform, substantial storage and rider-focused electronics make it equally capable of quick recreational outings and extended adventures across larger bodies of water.