2007 Kawasaki STX-12F

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Impressive performance and versatility these words characterized best the Kawasaki Jet Ski STX-12F. The STX-12F has everything a ski jet needs: plenty of power, a great look, useful features and even a few extras that keeps the STX-12F better than the competition.

Nothing compares whit the pleasure of riding the Kawasaki Jet Ski STX-12F, a watercraft that combines more than 20 years of Kawasaki’s Ninja high performance motorcycle technology whit the best emission rating in the industry.

Kawasaki STX-12F


The Kawasaki Jet Ski STX-12F engine is the heart of this Jet Ski. The power plant was adapted from Kawasaki’s leading-edge Ninja® motorcycle line. The dual overhead camshaft 1,199cc water-cooled engine makes plenty of power for optimum performance, and even boasts of low emissions and quiet operation. The STX-12F engine meets the strictest existing emission standards for both the Environmental Protection Agency (EPA) and the California Air Resources Board (CARB). The engine also has four valves per cylinder, fuel injection and an electronic engine control unit (ECU) that coordinates the ignition system and fuel injection to provide maximum performance and reliability. The fuel injection system itself utilizes a single 54mm throttle body and individual injectors at each chrome composite-plated aluminum cylinder to provide fuel for the high-performance engine, resulting in smooth power delivery and instant starting in any kind of weather.

The Kawasaki STX-12F is designed to be quiet, reliable and environmentally friendly. While highly tuned, the engine’s exhaust system is water-jacketed to help reduce under hood temperatures and keep it running as quietly as possible. The large-capacity air box is specially designed to both boost power and reduce intake noise levels. To reduce vibration, the engine is rubber-mounted.

The STX-12F features an open-loop cooling system that utilizes an intake filter and draws cooling water from the jet pump, ensuring consistent operating temperatures for maximum performance.

A direct-drive axial-flow jet pump is connected to an oval-edge, stainless steel, three-blade impeller. The direct drive pump has no gear reduction unit, allowing the engine to turn a lower rpm for lower stress, less wear and tear, lower vibration levels, less noise and better fuel consumption. A reverse function allows easy maneuverability in tight quarters.

The STX-12F is also equipped with Kawasaki Smart Steering® (KSS®). KSS features a steering sensor that is electronically linked to an on-board microprocessor. If the handlebar is fully turned in both direction and the engine rpm drops from a designated rpm, such as when the throttle is released at speed, the microprocessor activates the KSS, which raises engine rpm to provide enough thrust to initiate the desired turn.

Assisting with low-speed maneuvering is a reverse bucket that is shaped to deliver optimum thrust for more precise direction control when backing, and the bucket is injection molded to eliminate corrosion.

The STX-12F has Kawasaki’s innovative electronic Smart Learning Operation (SLO). Accessible directly on the instrument panel, SLO can be programmed to place a limit on maximum engine speed so novice riders can experience riding at a reduced speed while they master proper riding techniques.


Kawasaki STX-12F

The Kawasaki team offered for the STX-12F ski jets a sporty and an innovative design. The deep-V hull is made of fiberglass and gel-coated for a lustrous, scratch-resistant finish and features the molded-in Kawasaki Splash Deflector (KSD) to help minimize spray. High-performance sponsons help get the hull up on plane and provide “grip” while the hull design facilitates precise cornering, increased stability at high speed and a smoother ride in rough water. The stylish deck and angular seat offers a muscular look befitting a high-performance watercraft. The handlebars are located in a cab-forward position to provide plenty of room for the rider, plus abundant floor space provides room for the rider’s feet. There are even footrests to help stabilize a rear-facing spotter when pulling a skier, wake boarder or tuber.

The open rear deck has space easily used for getting into skis or as a diving platform. Reboarding in deep water is simplified with the automatically retracting boarding step located at the rear of the hull. The rear deck can also accommodate a cooler or other items needed for a day on the water. The STX-12F features water-resistant storage space, an easily accessible glove box and front storage compartment. A hydraulic damper holds the front storage hood open, allowing easy access until the operator closes it. Another large storage area is located under the seat.

The Jet Ski STX-12F has a 16.4 gal fuel tank for more riding time between fill-ups and an LCD instrument panel allows riders to monitor fuel level, speed, engine rpm, trip distance and time. Warning lamps alert the rider to low fuel level or high engine temperature. In addition, there is a magnetic keyed ignition switch to help deter theft or unauthorized use.

Test drive

The test drive of the Kawasaki STX-12Frevealed some minor negative points. One of them is that when driving at low speeds the bow rides close to the waves allowing the water to run over the bow and to reach the driver’s feat, problem that can be easily fixed by raising the speed. Another problem is that the speedometer and odometer read about 10 % high. And finally, it is hard to get the gas tank full because of the low nose and the filler tube position.

But enough with the bad stuff about the Kawasaki Jet Ski STX-12F, now it’s time for the really good stuff. The speedometer hits 68 – 70, the acceleration is great, despite the weight increase, handling is outstanding, it is quiet, smooth, and comfortable for either hard riding or long cruising, and can easily run 100+ miles between fill ups.


What else can be said about the Kawasaki STX-12F? It’s the perfect ride for you and your family offering everything you wish from a jet sky: speed, control, a great design and performance at only 7,999 USD.

If you want to ride a Kawasaki Ninja on the water the STX-12F Jet Sky is the best option.

Kawasaki STX-12F


Large 1,199cc four-stroke engine provides incredibly strong low-speed torque and acceleration
Electronic fuel injection provides improved throttle response, smooth engine performance, quicker acceleration, instant starts under most conditions and a dramatic reduction in fuel consumption
Dual overhead cams (DOHC) are light and compact for less valve train inertial mass, and provide consistent valve timing at high rpm
Four-valve cylinder head with large valves provide better intake and exhaust flow to improve torque and power
Tip-over protection shuts engine off if craft tilts more than 61 degrees
Waterproof ECU and ignition coils protect the ignition system from electrical shorts
Unique semi-dry sump oil system lowers the crankshaft in the engine, eliminates the need for scavenging pumps, and if the craft is capsized the oil stays in the sump instead of flooding the crankcase
Kawasaki’s patented oil separator provides fail-safe venting for the crankcase and prevents oil from flowing into the intake tract if the craft is capsized
Large capacity airbox lowers engine noise and improves air intake flow
Water-jacketed exhaust system reduces noise level and underhood temperatures for better power
Double waterbox mufflers deliver whisper-quiet operation
Freshwater flush fitting helps operator easily rinse out the motor’s cooling lines
Kawasaki Smart Steering® (KSS®) monitors steering input and engine speed, and when certain conditions are met, raises rpm to initiate a turn

Kawasaki STX-12F

Smart Learning Operation (SLO) is accessible on the instrument panel, and can be programmed to place a limit on maximum engine speed so novice riders can experience riding at a reduced speed while they master proper riding techniques
High-performance sponsons help the hull get up on plane and provide more aggressive "grip" in turns
Three-blade oval-edge stainless steel impeller provides maximum efficiency and incredible durability
Reverse bucket is made of injection molded material to prevent corrosion
Spacious, close-to-the-water open rear deck provides plenty of room for putting on skis or a wakeboard
LCD multifunction meter system with speedometer, tachometer, hour meter, clock, trip distance, trip time, fuel level and warning lights allows operator to easily monitor necessary information, and also alerts operator to low fuel or high engine temperatures
Kawasaki Splash Deflector (KSD) helps keep spray off the operator and passenger
Shielded jet propulsion system gives greater protection from damage
Storage compartments in bow, glove box and under seat can carry fire extinguisher, tool kit, cooler and more
Large capacity fuel tank allows more riding between fill-ups
Finger-type throttle reduces hand fatigue and increases comfort
Magnetic keyed ignition switch helps deter unauthorized use
Automatically retracting boarding step makes reboarding in deep water easier


Engine Type: Four-stroke, four-cylinder inline
Displacement: 1,199 cc
Bore and Stroke: 83 x 55.4 mm
Compression Ratio: 11.2:1
Cooling system: Inducted water
Fuel System: Electronic fuel injection
Ignition: TCBI with Digital Advance
Starting: Electric
Lubrication: Semi-Dry Sump system
Coupling: Direct drive from engine
Propulsion system: Jet pump, axial-flow, single stage
Impeller: Three-blade, oval-edge stainless steel
Maximum Thrust: 827 lb.
Overall Length: 122.8 in.
Overall Width: 46.5 in.
Overall Height: 41.3 in.
Dry Weight: 737 lb.
Load Capacity: 496 lb.
Storage Capacity: 23.5 gal.
Fuel Capacity: 16.4 gal.
Oil Capacity: 5.3 qt.
Color: Jet White/Firecracker Red or Jet White/Candy Thunder Blue
Warranty: 12 months
Price: 7,999 USD

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