2007 Kawasaki JET SKI STX- 12F


353 Hours
In Stock
Riverside Marine & Cycle
Primary Color
Stock #


Dealer Insights



Impressive performance and versatility.

What traits should a personal watercraft possess? We all know it should have plenty of power, look great, and have useful features to make it noteworthy. The Kawasaki JET SKI® STX®-12F watercraft has all that, with a few extras to keep it riding higher than the competition. It all starts with the engine. The STX-12F powerplant 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 meets the strictest existing emission standards for both the Environmental Protection Agency (EPA) and the California Air Resources Board (CARB). In fact, the STX-12F received CARB's ultra-low “three-star” rating in 2003, five years before it was required to by law. The STX-12F also features 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 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 underhood temperatures and keep it running as quietly as possible. The large-capacity airbox 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 either 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 also features 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. Even the hull bristles with innovation. The STX-12F's 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 STX-12F boasts a sporty design with its stylish deck and angular seat, offering 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, wakeboarder 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 features a 16.4-gallon 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.

  • 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°
  • 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
  • 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
Specifications and pricing are subject to change.



Engine Type
Four-stroke, four-cylinder inline
1,199 cc
Bore and Stroke
83 x 55.4 mm
Inducted water
Compression Ratio
Fuel System
Fuel injection: Ø 54 mm x 1, w/auto idle function, Smart Learning Operation mode
TCBI with Digital Advance


Dry Weight
737 lb. (337 kg)
Fuel Capacity
16.4 gal. (62 l)
41.3 in. (1,050 mm)
122.8 in. (3,120 mm)
46.5 in. (1,180 mm)
Oil Capacity
5.3 qt.
Rider Capacity
Storage Capacity
23.5 gal. (88 l)

Drive Unit

Three-blade, oval-edge stainless steel, Ø 148 mm


Jet White/Firecracker Red, Jet White/Candy Thunder Blue (US only)
12 months