2021 Kawasaki Ultra 310R — Should You Buy One?
Typical asking price: $14,000–$18,500. There are 2 high-severity known issues you need to know before handing over a check.
Kestrel Take
A supercharged big-water beast — the Ultra 310R makes 310 hp and rides the biggest, most stable hull in the class, making it a favorite for rough-water and offshore riding. The supercharged four is strong; verify its service (Kawasaki superchargers are more robust than some but still need attention) and the pump. A low-hour, freshwater (or well-flushed) 310R with clean compression is a hugely capable performance ski.
What we checked
Not checked against public records
Personal watercraft fall to the Consumer Product Safety Commission rather than NHTSA. Its recall feed rarely names a specific model year, so we have not wired it in — matching on the brand alone would attach other people’s machines to this page. What follows is our own write-up, and it has not been reconciled against an official record. Treat it as a starting point, not a verdict.
Known Issues for the 2021 Kawasaki Ultra 310R
Ranked by wallet impact. These are documented, recurring problems — not freak accidents. How we decide that.
Verify the supercharger and engine service history and compression; the 310 makes big power and hard use takes a toll.
Repair cost (estimate): $300-$3,000+
Source: not yet checked against public records.
Big supercharged skis get ridden hard; verify hours and service.
Repair cost (estimate): $300-$5,000 — about 31% of what this car is typically worth
Source: not yet checked against public records.
Verify flushing and inspect for corrosion — many Ultras are ridden offshore in salt.
Repair cost: Not yet priced
Source: not yet checked against public records.
Walk-Away Red Flags
- ✗No supercharger/engine service record
- ✗High hours, hard use
- ✗Salt without flushing
- ✗Poor compression
Good Signs
- ✓Documented supercharger/engine service
- ✓Reasonable hours, clean compression
- ✓Flushed/freshwater, healthy pump
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Known issues on this page are based on documented owner reports, NHTSA complaints, class-action records, and manufacturer technical service bulletins. Individual vehicles vary. A pre-purchase inspection by a trusted mechanic is always worth doing.
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