Buyer Research

2003 Kawasaki 1100 STX DI (2-stroke) — Should You Buy One?

Typical asking price: $1,500–$3,800. There are 3 high-severity known issues you need to know before handing over a check.

Kestrel Take

A direct-injection two-stroke Kawasaki runabout — quick and cheap now, with the DI fuel system as the make-or-break. When the direct-injection system is healthy it's great; when it's neglected it's a frustrating project. Compression, the DI system, and corrosion are the inspection.

What we checked

No public record to reconcile against

We don't yet have a public record to check this one against. Boats and personal watercraft are not in NHTSA’s database — that is the Coast Guard, which publishes recalls but no owner-complaint record. 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 2003 Kawasaki 1100 STX DI (2-stroke)

Ranked by wallet impact. These are documented, recurring problems — not freak accidents.

Direct-injection fuel system faultsHigh — wallet impact

The Ficht/DI-style system is powerful but complex and expensive to sort when neglected; verify it runs cleanly with no fault codes.

Repair cost (estimate): $400-$1,800

Source: not yet checked against public records.

Two-stroke top-end wearHigh — wallet impact

Verify compression and rebuild history.

Repair cost (estimate): $400-$1,500

Source: not yet checked against public records.

Salt corrosion and ageHigh — wallet impact

A 20-year-old ski can be heavily corroded; inspect closely.

Repair cost (estimate): $300-$2,000

Source: not yet checked against public records.

Parts availabilityMedium

DI-specific and older Kawasaki parts are getting scarce.

Repair cost: Not yet priced

Source: not yet checked against public records.

Walk-Away Red Flags

✗DI fault codes or rough running
✗Low compression
✗Heavy corrosion
✗No service history

Good Signs

✓Clean-running DI system
✓Good compression
✓Freshwater use with records

Found a specific Kawasaki 1100 STX DI (2-stroke)?

This page covers what goes wrong on the 2003 Kawasaki 1100 STX DI (2-stroke) in general. The Kestrel report covers this specific car— the asking price vs. market, the photos, the seller's description, and a BUY / NEGOTIATE / WALK AWAY verdict with a negotiation script.

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Not ready to pay for one? The free read is instant and needs no card — it checks the asking price against the market and names the top issues for this year. It stops short of the verdict, because that needs the photos.

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.