2 Namura Piston Ring Kits for Kawasaki 1982-1990 JS 550, SX 550 STD Bore 75mm
2 Namura Piston Ring Kits for Kawasaki 1982-1990 JS 550, SX 550 STD Bore 75mm
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Namura Piston Ring Kits for Kawasaki
These two Namura piston ring kits are standard bore 75mm ring sets for Kawasaki JS 550 and SX 550 models from 1982‑1990.
Overview
The Namura piston ring kits provide two complete sets of standard bore 75mm rings for Kawasaki JS 550 and SX 550 watercraft. Each kit includes the rings needed to reseal the piston in the cylinder, restoring compression and engine performance. Use these piston ring kits during a top‑end rebuild on 1982‑1990 Kawasaki 550 models.
Built For Performance
- Manufactured from ductile iron for long wear life
- Pre‑gapped to factory specifications for quick installation
- Includes top and second rings per piston
- Designed to reduce oil consumption and blow‑by
- Direct replacement for OEM ring sets
Fits These Machines
- for Kawasaki JS 550 (1982‑1990)
- for Kawasaki SX 550 (1982‑1990)
On‑The‑Job Use
- Rebuilding the top end of a Kawasaki 550 jet ski
- Restoring lost compression in a high‑mileage engine
- Replacing worn rings during a full engine overhaul
Specs At A Glance
| Bore Size | 75mm (Standard) |
| Quantity | 2 Sets (4 rings total) |
| Brand | for Namura |
| Compatible Models | Kawasaki JS 550 / SX 550 |
| Year Range | 1982‑1990 |
Good To Know
Q: Are these rings pre‑gapped or do I need to file them? A: They are pre‑gapped to factory specs, but you should always verify end gap clearance during installation to ensure proper fit.
Q: Can these rings be used for a 75.5mm overbore? A: No, these are 75mm standard bore rings; oversize rings would be required for a bored cylinder.
Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.
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