Jet Ski is Kawasaki's word — the rest of us borrowed it. STX, Ultra 160, and the supercharged Ultra 310 serviced with KDS diagnostics and the interval respect big power demands.
Kawasaki's flagship makes the honest version of the pitch: a supercharged 1.5-liter four making 310 horsepower in a hull built like Kawasaki builds everything — heavy, stout, and serious. The Ultra 310 rewards owners who respect its intervals the way muscle-car owners respect valve adjustments, and it collects expensive stories from owners who don't.
Our Kawasaki water rhythms: the Eaton-style supercharger's service interval taken seriously (the rebuild program covers it alongside the Sea-Doo units), oil-bathed pump hubs serviced on Kawasaki's own schedule rather than generic PWC habits, cooling and exhaust checks for the bay-ridden machines, and everything read through KDS at the module level.
The STX and Ultra 160 carry the value story — naturally aspirated, family-duty, and long-lived on basic care. All of it runs through the watercraft program's standard: measured, documented, tank-proven. Land-side Kawasaki loyalty lives on the Teryx KRX page.
Honest platform notes: the Ultra hull's weight is a feature in Galveston Bay chop — it's the roughest-water PWC made, and bay riders should shop it for exactly that. The STX line gives families the most durable dollar in the segment. And every supercharged Ultra with unknown service history should assume its blower interval is due until KDS and an inspection say otherwise.
Where they run: our Houston water guide covers the lakes and bays these machines call home — and what each one does to a service schedule.
Kawasaki keeps the Jet Ski range focused, and each hull carries a distinct service personality worth knowing before the season starts. Here's the fleet as our marine bay sees it — from the family workhorse to the supercharged flagship, each with the interval story its engineering earned.
Naturally aspirated, famously durable, and the most honest dollar in the segment. Its service life is oil, plugs, pump checks, and the salt discipline every bay machine earns — a machine that mostly needs its owner to show up on schedule.
The rough-water hull without the supercharger tax. It gives bay families the planted ride with a simpler service story — the same pump-hub oil interval, minus the blower lines. For many Galveston-area buyers it's the quietly correct choice.
310 horsepower through an Eaton-style blower that treats its service interval as a covenant. Watchpoints: supercharger hours verified with KDS, intercooler and cooling health in Texas water temps, premium-fuel discipline, and the pump hub's own oil schedule. Muscle-car ownership rules apply, happily.
The stand-up lives on, and so does our respect for it — race-bred service attention, honest crash-damage assessments, and the two-stroke heritage units kept alive with ethanol-aware care and truthfully quoted parts timelines. Few machines reward fitness and punish neglect so equally.
Same documented sequence as everything in the marine bay — full detail on the build process page.
Model, hours, water type — salt or fresh changes the checklist from line one.
Factory diagnostics plus the physical: supercharger status on 310s, pump hub oil, corrosion reads.
Parts, labor, timeline in writing — interval honesty over upsell, every time.
Every watercraft runs the test tank before pickup. It leaves proven, not assumed.
Kawasaki's Eaton-style unit runs longer intervals than the old ceramic-washer Sea-Doo era, but "longer" still means scheduled — and hard-ridden or salt machines earn earlier attention. We pull the real hours with KDS and inspect rather than assume. Unknown history means due, until proven otherwise.
The oil-bathed pump hub — it has its own fluid and interval most generic PWC service skips entirely. Neglected hub oil is the quiet killer of Kawasaki pumps. Ours get the hub serviced on schedule alongside the standard wear ring and impeller work.
It's the best rough-water hull in the business — the weight that makes it a handful at the dock makes it planted in chop that beats lighter skis to pieces. Bay duty just adds the salt checklist: flush discipline, anodes, and connector care. Set up right, it's the bay king.
Yes — STX 15Fs and the earlier Ultras remain honest machines worth maintaining, and even the stand-up SX-R has a home here. Parts timelines on older Kawasaki marine bits get quoted truthfully, and we'll say plainly when a repair crosses into replace-it math.
With KDS, Kawasaki's factory system — yes. Fault history, live data, and hour verification at the module level. It completes the three-brand factory coverage (BUDS for Sea-Doo, Yamaha's suite for WaveRunner) that makes our marine bay a real diagnostic shop rather than a parts-swapping one.
The performance and parts catalogs behind Kawasaki marine work here.
Ultra interval due, pump suspicious, or salt season starting — tell us the model and the hours. KDS-equipped answers, tank-proven results.
(713) 555-0182