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250 horsepower provides
dominating performance
Ultra® 250X Kawasaki
stunned the motorcycling world with the launch of its Ninja®
ZX-14 flagship. It didn’t take long for the mighty ZX-14
to assume its rightful place as the quickest and fastest stock
production motorcycle. Now, Kawasaki extends its high-performance
domination into the realm of personal watercraft. As the quickest
and most powerful production PWC in history, Kawasaki’s
new JET SKI® Ultra® 250X serves notice that “ULTRA”
defines the pinnacle of PWC performance.
The supercharged Ultra 250X delivers 250 horsepower
for astonishing acceleration that can be felt in the rider’s
soul. Once up to speed, its precise handling and superb stability
are equally impressive, thanks to a brand-new hull specifically
designed to capitalize on the engine’s awesome performance.
The JET SKI Ultra 250X’s new engine,
jet drive and hull incorporate racing technology refined through
Kawasaki’s multiple IJSBA championships. This same technology
allows it to deliver the awesome acceleration of a drag racer,
and help ensure excellent hook-up – even in rough water.
With a 1,498cc marine engine derived from
Kawasaki’s astounding JET SKI STX®-15F watercraft,
the Ultra 250X produces power comparable to a normally aspirated
high-performance three-litre engine, thanks to the addition
of a Roots-type supercharger. Unlike centrifugal superchargers
or turbochargers, the Ultra 250X’s high-volume direct-drive
supercharger delivers boost virtually instantly at any engine
speed from idle to redline. This results in a linear, smooth
torque curve which is ideal for a personal watercraft that
needs to accelerate hard all the way from a standstill through
astounding top-end speeds.
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A common drawback of forced-induction is the
heat build-up that occurs when the intake air is compressed.
The Ultra 250X overcomes this with the use of a large-capacity
intercooler. The 250X’s supercharger compresses the air
to a maximum boost pressure of 11.4psi. This compression heats
the intake charge to extremely-high temperatures, which could
limit the engine’s power output. However, the 250X’s
large-capacity intercooler cools the intake charge back down
to ambient temperature or even less – ideal for producing
maximum power.
The JET SKI Ultra 250X’s stunning acceleration
is augmented by a huge 155mm jet pump featuring the largest
PWC impeller and nozzle Kawasaki has ever produced. Developed
based on feedback from Kawasaki’s race machines, this
pump was specially designed to deliver predictable thrust
and good “traction,” even when riding on rough water.
The pump uses eight guide vanes (instead of the six used on
previous models) to regulate the flow of water from the impeller
for efficient and powerful propulsion. This is a significant
factor in the Ultra 250X’s mind-boggling acceleration.
The new pump incorporates a groove from the center to the
rear of the ride plate which makes it easier to hold a stable
heading when riding in a straight line.
25 Gateway Drive, Labrador, QLD,
4215
Phone (07) 5537 9290 - Email info@jetskiworld.com.au
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