2 Namura .040 Over Bore Piston Ring Kits for Sea-Doo 580 PWC 1990-1996 77mm

Piston Ring Kits for Sea-Doo

These .040 over bore piston ring kits for Sea-Doo 580 PWC engines from 1990 to 1996 are 77mm in size, providing a precise fit for cylinder rebuilding.

Overview

The two .040 over bore piston ring kits are designed for Sea-Doo 580 PWC engines manufactured between 1990 and 1996, with a 77mm bore diameter. These rings restore compression and performance during engine rebuilds. They are intended for mechanics and DIY enthusiasts rebuilding Sea-Doo 580 engines.

Built For Performance

• Manufactured from high-grade cast iron for durability
• .040 over size accommodates worn cylinders
• 77mm bore diameter for precise fit
• Includes all rings needed for one piston (two kits = two pistons)
• Ensures proper ring end gap and sealing

Fits These Machines

• for Sea-Doo 580 PWC (1990-1996)

On-The-Job Use

• Engine rebuilding and overhaul projects
• Restoring compression in high-hour PWCs
• Performance maintenance for personal watercraft
• Cylinder honing and ring replacement

Specs At A Glance

Good To Know

Q: Do these rings require gap filing? A: It is recommended to check and adjust ring end gaps according to your cylinder bore measurements for optimal sealing.

Q: Are these rings compatible with stock Sea-Doo 580 pistons? A: Yes, they are designed for standard replacement pistons in .040 over bore applications.

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