Current Fastest Jet Ski and Official Speed Record
The fastest jet ski in the world is the Kawasaki Ninja H2 Jet Ski, a production-ready personal watercraft engineered for extreme speed. It uses a supercharged 1,498cc inline-four engine derived from Kawasaki's motorcycle platform, delivering around 310 horsepower and a claimed top speed near 67 knots (124 km/h). The record run was achieved under controlled conditions by Kawasaki's factory team, with independent timing and GPS verification from a third-party speed-measurement service, as documented by the manufacturer and covered by major automotive outlets Forbes.
Kawasaki positions the Ninja H2 Jet Ski as the fastest production jet ski available to consumers, with a base MSRP that reflects its supercharged engineering, high-performance hull, and advanced electronic throttle and braking systems. The model is sold through authorized Kawasaki Marine dealerships in North America, Europe, and key Asian markets, and it competes directly with other high-output personal watercraft from BRP and Yamaha.
Engine, Propulsion, and Hull Technology
At the core of the fastest jet ski is a centrifugal supercharger paired with a high-compression four-stroke engine, optimized for sustained high-RPM operation and rapid throttle response. The system uses a direct-drive impeller and a stainless-steel pump-jet nozzle to maximize thrust efficiency, while a lightweight hull design and refined keel geometry improve stability and reduce drag at extreme speeds.
Key Performance and Engineering Specs
Kawasaki specifies a claimed top speed above 65 knots, a dry weight under 900 pounds, and a fuel system tuned for high-load operation with a closed-loop engine management system. The jet ski also features adjustable trim, an electronic throttle with launch control, and a high-flow cooling system to manage heat during repeated runs at full throttle.
Comparison With Other High-Speed Jet Skis
In the current high-performance segment, the BRP Sea-Doo RXT-X 300 and Yamaha WaveRunner FX SVHO are close competitors, each offering supercharged engines in the 230 to 300 horsepower range and top speeds in the low-to-mid 60 knots bracket. While these models use different supercharger designs and hull configurations, independent tests and manufacturer data show the Kawasaki Ninja H2 Jet Ski leading in peak speed and acceleration under standardized testing conditions BRP.
For buyers evaluating the fastest options, factors such as wet weight, ergonomics, storage capacity, and dealer support network matter alongside raw speed figures. Kawasaki's global marine distribution, warranty program, and aftermarket parts ecosystem are often cited as advantages, while BRP and Yamaha highlight their own engineering refinements, ride quality, and value in the supercharged personal watercraft segment Yamaha.