2 Namura .010 Over Bore Piston Ring Kits for Sea-Doo 580 PWC 1990-1996 76.25mm

Namura .010 Over Bore Piston Ring Kits for Sea-Doo

This piston ring kit set includes two rings for Sea-Doo 580 PWC models from 1990 to 1996, with a .010 over bore size of 76.25mm for engine rebuilding.

Overview

These Namura piston ring kits are precision-machined for Sea-Doo 580 PWC engines, providing a .010 over bore size at 76.25mm for restoring cylinder compression. Ideal for 1990-1996 models, these piston ring kits deliver reliable performance in personal watercraft applications.

Built For Performance

• Manufactured from high-strength ductile iron for long wear
• Precision .010 over bore size at 76.25mm ensures proper cylinder fit
• Designed for use with Namura piston kits for matched performance
• Rings feature low tension for reduced friction and improved throttle response
• Each kit includes two rings (one compression, one oil control)
• Engineered to meet or exceed OEM specifications

Fits These Machines

• for Sea-Doo 580 PWC (1990-1996)

On-The-Job Use

• Commonly used during top-end rebuilds of Sea-Doo 580 PWC engines
• Restores compression in high-hour personal watercraft
• Ideal for replacing worn rings when reusing or replacing pistons
• Used by DIY mechanics and professional shops for engine overhauls

Specs At A Glance

Good To Know

Q: Will these rings fit standard bore cylinders? A: No, these are .010 over bore rings, intended for cylinders that have been bored oversize. Confirm your cylinder bore before ordering.

Q: Do I need to replace the piston as well? A: It is recommended to use a matching .010 over bore piston for proper ring end gap and fit. Inspect the piston for wear and replace if necessary.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.