Introduction
JET SKI Performance Taken to a
Whole New Level
You power junkies know who you are. You're hard-core, and you
won't settle for anything less than the most capable watercraft
available. Well, Kawasaki has exactly what you need in the form
of the new and supremely powerful Jet Ski® Ultra® 300X
the most powerful Jet Ski ever built, one packing 300
horsepower and all the massive, arm-straightening thrust that
goes with it.
It's OK. We'll pause for a moment or two while your pulse slows
down a bit
As befits Kawasaki's top-shelf performer, the Ultra 300X has
been thoroughly redesigned for 2011, from nose to jet pump and
everything in between. There's more power and thrust, along with
loads of engine strengthening to handle all that power and help
ensure typical Kawasaki reliability. There's new technology in
the form of an all-new and high-tech supercharger and Kawasaki's
Electronic Throttle Valve system. And the race-derived hull has
been extensively updated to provide the sort of top-tier handling
hard-core enthusiasts expect.
Power and thrust are key ingredients in the Ultra 300X package,
and the thoroughly massaged, 1,498cc inline-four DOHC engine
supports that recipe like no other powerplant in all of watercraftdom.
(Not a real word, we know. But we get so excited talking about
this amazing engine!)
The big news for 2011 is the use of an all-new supercharger,
one that's two steps beyond the abilities of the roots-type unit
fitted to previous X-model Jet Ski watercraft. Roots-type superchargers
are known as fixed-displacement units, which produce large quantities
of boost at all rpm levels, even right off idle, for a flat torque
curve and usable, step-free power across the rev range. That's
a good thing.
The new unit is known as an Eaton Twin Vortices Series (TVS)
roots supercharger, which features twin four-lobe rotors and
offers a significant performance increase over the already impressive
previous unit. Where the standard roots unit delivered compressed
air in waves, the new Eaton TVS unit offers continuous delivery
for more power and smoother power delivery. Boost pressure is
up significantly, from 11.0 psi to 17.0 psi. Supercharger efficiency
is also up too, nearly 30 percent, while mechanical losses have
been reduced to just 10 percent. A liquid-cooled intercooler
helps keep the compressed intake charge cool, which stops power-robbing
heat from sapping the system's efficiency.
There's more. Stronger and more advanced internal engine parts
assist power production and help maintain the high level of reliability
you've come to expect. Revised pistons team with a pumped-up
valve train that includes stronger, hardened-nickel valves with
thicker stems, a beefier cam chain and reworked exhaust camshaft
with revised lobe profiles and increased durability. Stronger
crankcases help harness all this extra horsepower, while an advanced
and more efficient oil cooler helps minimize temperatures when
the action gets really hot upstairs by sandwiching oil between
two cooling jackets instead of one as before. The result is a
staggering 300 horsepower, a significant jump from the previous
model.
Controlling all this substantial power is made easier via the
300X's array of futuristic electronics, which include a highly
advanced fuel injection system controlled by a high-tech Electronic
Control Unit (ECU), the "brain" of the entire system.
The ECU not only commands the injectors and throttle bodies to
route a precise amount of fuel/air mixture into the combustion
chambers with help from the all-new Electronic Throttle Valve
(ETV) system (which converts throttle lever inputs into electronic
signals that are then passed on to the throttle body), it also
allows a host of other technologies.
These include a range of varied riding "modes" such
as Fuel Economy Assistance mode (for maximum economy during slower
going), one-touch 5 mph mode (for use in no-wake zones), the
300X's handy Electronic Cruise Control system (for steady cruising
speeds when touring) and the Smart Learning Operation (SLO) mode,
which allows newer riders to become familiar with the handling
and response of this Jet Ski at a more relaxed pace. The setup
also includes a digital dash display called the Economical Riding
Indicator that shows the rider when riding conditions are most
efficient (such as at planing speed, where hull resistance is
minimal).
Another example of advanced design is the 300X's Electronic Trim
Control (ETC) system, which controls the nozzle angle of the
revised, 160mm jet pump to adjust hull attitude to suit water
surface conditions and riding style. The system has a plus-or-minus
range of eight degrees, and works with the revised hull design
to allow quicker turning characteristics. A redesigned impeller
is better suited to the new engine's performance, while the addition
of horizontal guide "vanes" on the propulsion grate
improves stability and hook-up during acceleration. With an even
stronger engine coupling assembly, it all adds up to the most
advanced watercraft powerplant in the industry.
The race-derived, fiberglass-reinforced plastic hull motivated
by this astounding engine has also been redesigned for 2011.
Engineers re-examined every inch of the already excellent-handling
Ultra hull form, to enhance strength and achieve weight savings
where possible. Hull thickness was reduced slightly throughout,
and combined with special reinforcements in the inside bow area,
the result is a lighter, stronger, more maneuverable and more
stable hull. The hull cleaning system has been replaced with
a two-circuit design, each with a dedicated flushing port for
easier maintenance. Revised styling through the use of more radically
edged contours and new front nose trim results in a more aggressive
look up front, too.
The Ultra 300X's cockpit and rider accommodations didn't escape
the designers' efforts either. An all-new high-visibility instrument
panel has been fitted, which features an all-LCD info screen
and visor that's not only futuristic but wildly informative.
The highly legible LCD display accommodates the aforementioned
riding-mode displays along with a range of other functions, including
clock, time, trip and hour meter, digital or bar-graph tachometer,
water and air temperature gauges, speedometer and max-speed functions.
You'll always know what's what when aboard the 300X.
Hard to believe, but revised ergonomics improve comfort significantly
over the already plush 260X. The handlebar remains five-way adjustable
to fit a range of riders and riding styles, with grips positioned
nearly an inch wider to accommodate all-new handlebar switch
assemblies. The wider bar allows even better maneuverability
and is more comfortable, especially on longer rides. The two-piece
seat offers roomy accommodations for three people, while a new
slightly narrower seat (at the front) makes it easier for riders
to ride sitting or standing. The ergonomic deck design gives
all riders plenty of legroom for increased comfort, and a redesigned
reverse lever on the left side of the craft features a more ergonomic
design and lighter operation.
Increased comfort means that longer, farther rides are easier
than ever. And with nearly 21 gallons of fuel capacity
the most in its class the 300X allows plenty of range for
long-distance treks. A convenient storage bin with 54 gallons
of capacity hides under the front cowl, and a dual drink holder
keeps refreshments just a reach away. Overall, combined storage
capacity is an industry leading 60 gallons, also bringing extra
gear along is never an issue.
Perhaps most stunning of all about all these performance- and
comfort-related advancements is the fact that the new Ultra 300X
weighs nearly 40 pounds less than a 2010 Ultra 260X.
Lightweight, powerful, blessed with superb handling and comfort,
and featuring Kawasaki's world-renowned design and reliability,
the new Ultra 300X doesn't just sit atop the performance watercraft
pyramid it commands the position proudly.
Authentic Kawasaki Accessories are available through Kelly's
Kawasaki.
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Features
New for 2011
· New electronic cruise control smoothly holds a set speed
from 5 mph up to top speed
· Redesigned fiberglass-reinforced hull is lighter, stronger
and more maneuverable
· New Eco Mode reduces and smooths engine performance
while conserving fuel
· New Eco Indicator shows the rider when the speed and
throttle opening is in the 300X's most efficient range
· New instrument panel with bigger speed numerals is easier
to see
· New Electronic Trim Control allows rider to adjust nozzle
angle and hull attitude
· New Eaton Twin Vortices Series (TVS) roots supercharger
offers a significant performance increase
· New ergonomics with a revised handlebar and seat for
enhanced rider comfort
· New reverse lever is more comfortable and easier to
use
Key Features
· Class-shattering 300 horsepower for amazing performance
· Strong, light, deep-V hull offers both stability and
great cornering performance
· Massive, industry-leading storage capacity lets you
bring your gear with you
· Largest fuel tank in class keeps the fun going longer
· Five-position adjustable handlebars accommodates a variety
of riders
· Separate keys for full power operation and Smart Learning
Operation
300-horsepower Supercharged Engine
· Supercharged and intercooled 1,498cc, liquid-cooled
inline four-cylinder engine
· Cast pistons with machine finishing for excellent durability
· Revised, high-lift exhaust cam lobes act upon new valves
and offer increased durability
· Stronger hardened nickel valves offer superior heat
resistance and enhanced reliability
· 33.4mm intake and 28.3mm exhaust valves
· Oil cooler features an additional layer for more efficient
cooling
· Larger and stronger cam chain handles increased engine
power
· Stronger, reinforced crankcase for added durability
and reliability
· Coupling and damper revised to suit increased power
· Heat-resistant plastic intake manifold for decreased
engine weight
· Optimum cylinder wall temperature is maintained by a
check valve between the cylinder jacket and water muffler that
shuts water flow off above 2,000 rpm, keeping the cooling water
inside the cylinder jacket
· Precise power adjustments are easy with a throttle lever
designed to prevent finger fatigue on longer rides
Eaton Twin Vortices Series (TVS) Roots-type Supercharger
· Four-lobe design offers significant performance increase
over standard roots-type unit
· System force-feeds the engine two liters of air with
every revolution, providing a stable supply of high-pressure
intake air at all rpm
· Planetary gearing increases supercharger speed by a
factor of 2 for better response
· Delivers compressed air continuously, not in waves,
for smoother power delivery
· Produces large amounts of boost even at low rpm for
instant and powerful acceleration right off of idle
· Provides a very flat and meaty torque curve with step-free
power across the entire rev range without any of the lag associated
with turbochargers
· Produces more low-rpm boost than competitive or aftermarket
systems, with a maximum of 17 psi of boost pressure
· Two different air bypass valves are used to prevent
over boosting at low and medium rpm
Air-to-Water Intercooler
· Efficiently cools high-pressure intake air, as cooler
air is denser and makes more power
· Cooler air results in higher combustion efficiency and
high engine output
· Liquid cooling allows the intercooler to maintain consistent
thermal performance
Digital Fuel Injection System
· High-flow fuel injectors with four orifices are fitted
to complement the increased power output and improve combustion
efficiency
· Single throttle body features a large, 60mm bore diameter
Exhaust
· 4-into-2-into-1 powerboat-style exhaust system routes
the exhaust pipe upward
· Allows the smoothest path for exhaust gases, maximizing
exhaust efficiency
160mm Jet Propulsion
· Efficiently converts the Ultra 300X's massive horsepower
output into thrust using a larger-diameter 160mm jet pump
· Developed from Kawasaki's racing machines, this new
pump was specially designed to deliver stable output and good
"bite" even when riding on rough water
· Revised impeller featuring a 3-blade design translates
the 300X's increased engine output into increased acceleration
performance and quieter operation
· An eight-vane intake guide is used to smooth and regulate
the flow of water from the impeller for efficient and powerful
propulsion
· Redesigned, left-side reverse lever for easy operation
Ride Plate
· Features a groove from the center to the rear of the
plate to enhance straight-line stability
Electronic Trim Control System
· New system allows the angle of the jet pump nozzle to
be controlled to adjust the attitude of the hull to suit water
surface conditions and riding styles
· Adjustment range is plus or minus 8 degrees from standard
Electronic Throttle Valve (ETV) with Cruise Control
· Accelerator Position Sensor (APS) converts throttle
lever input to an electronic signal that's used to control the
throttle valve via an electric motor for optimum throttle response
and smoothness
· Redundancy in the system ensures control is maintained
in case of failure
· One-touch 5 mph mode allows push button no-wake zone
riding
· Fuel Economy Assistance mode allows maximum fuel efficiency
when going slow
· Economical Riding Indicator mode can be viewed on a
graph on the new LCD info screen
Stronger, Lighter Hull Design
· Feedback from Kawasaki's IJSBA championship-winning
racing machines integrated into design enables it to cope with
the engine's increased horsepower
· Complete re-evaluation of hull thickness resulted in
optimum strength balance and a significant weight reduction
· Specially reinforced inner bow is better suited to engine's
increased power output
· Hull offers a combination of high stability and responsive
handling in both calm and rough-water conditions
· The lower hull is specially designed to distribute the
engine and power delivery loads over a wide area
· The 300X's deep-V hull enables a high bank angle and
motorcycle-like turning performance. This reduces the lateral
G-loads imposed on riders during turns, allowing them to better
concentrate on riding
· The idealized 22.5-degree V-angle at the bottom of the
hull helps reduce unwanted spinouts during sharp turns
· Delivers the neutral handling and turning characteristics
for which Kawasaki JET SKI watercraft are famous
· Bottom of the hull slants upward steeply from the center
section to the bow, so the Ultra 300X can penetrate swells and
waves with less shock, delivering extreme stability at low speeds
and pushing through waves rather than bouncing over them at high
speeds
· Battery located inside the front storage area near the
center of the machine, avoiding concentrating heavy components
at the rear and freeing up space inside the engine bay
· Integrated sponsons extend from the hull, providing
stable wallow-free straight-line performance and contributing
significantly to the 300X's excellent high speed maneuverability
while helping to retain the narrow hull design
Quattro KSD
· The Ultra 300X's Kawasaki Splash Deflector uses three
bottom-mounted ridges and an additional deflector mounted at
the top to deflect water splashing forward from under the hull
· Whether turning or rocketing forward, at high speeds
or low, the Quattro KSD minimizes spray, allowing greater rider
concentration
Kawasaki Smart Steering®/SLO Mode
· Kawasaki Smart Steering® (KSS®) monitors steering
input and engine speed and, when certain conditions are met,
raises rpm to help initiate a turn
· Smart Learning Operation (SLO) allows newer riders to
become familiar with the handling and response of this JET SKI
watercraft at a more relaxed pace
· Two separate keys, one for SLO mode and one for full-power
operation help prevent confusion over which setting is in use
Comfort and Convenience
· New wider handlebars are more comfortable and provide
lighter steering feel
· Five-way adjustable handlebars allow operation while
standing or sitting and suit a wide range of riders
· Reshaped seat is comfortable whether riding stand-up,
seated or with passengers
· Two-piece seat offers roomy accommodations for three
people
· Ergonomic deck design gives plenty of legroom
· A long rear boarding step and dual grab handles makes
it easy to climb onboard, and the step retracts inside the bumper
to prevent damage
· A quick and easy hose connection allows an easy method
to flush sea water out of the engine
· Mirrors are mounted to the upper deck to facilitate
opening of the hatch cover
Capacious Storage
· The Ultra 300X offers 56 gallons of total storage capacity
· The large-capacity, fully sealed storage area with a
detachable storage tray has plenty of room for recreational equipment
· A detachable drink holder with space for two drink bottles
is mounted on the center console
· Ideal for small items like a ski rope, a compact storage
area is integrated with the under-seat rear grip
Extra-large Fuel Capacity
· 20.6-gallon fuel tank has more fuel capacity than any
machine in its class
All-New Digital Instrumentation
· A single, highly legible LCD screen replaces the dual
meter setup of the 260X
· New instrumentation includes the new riding modes, as
well as external water and air temperature, clock, time, trip
and hour meters, tachometer (in digital or graph displays), speedometer
and max speed functions
· Cockpit visor repositioned higher for increased visibility
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Technical Specifications
Engine: Supercharged and intercooled,
four-stroke, DOHC, four valves per cylinder, inline four-cylinder
Displacement: 1,498 cc
Bore x Stroke: 83 x 69.2 mm
Compression Ratio: 8.4:1
Induction: Eaton Twin Vortices Roots-type supercharger with air-to-water
intercooler
Maximum boost: 17.0 psi
Maximum horsepower: 300hp @ 7,750 rpm*
*HP measured in PS at the crankshaft under controlled conditions.
Actual performance may vary.
Cooling system: Inducted water
Fuel System: Digital Fuel Injection
Ignition: TCBI with Digital Advance
Starting System: Electric
Lubrication: Semi-Dry Sump system
Coupling: Direct drive from engine
Propulsion system: 160mm jet pump, axial-flow, single stage
Impeller: Three-blade, oval-edge stainless steel
Thrust: 1,769 lbs.
Overall Length: 132.7 in.
Overall Width: 47.0 in.
Overall Height: 45.3 in.
Curb Weight: 1040.8 lb.** Includes all necessary materials and
fluids to operate correctly, full tank of fuel (more than 90%
of capacity) and tool kit (if supplied)
Load Capacity: TBD
Storage Capacity: 60 gal.
Fuel Capacity: 20.6 gal.
Oil Capacity: 5.3 qt.
Color Choices: Ebony / Lime Green, Ebony / Sunbeam Red
Warranty: 12 months
Good Times™ Protection Plan: 12, 24, 36 or 48 months
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