2 Namura .020 Over Bore Piston Kits for Sea-Doo 580 1990-1996 76.5mm SEE LIST

.020 Over Bore Piston Kits for Sea-Doo 580 1990-1996

Set of two .020 over bore piston kits for Sea-Doo 580 engines from 1990-1996, offering a 76.5mm bore size for increased displacement and performance.

Overview

These .020 over bore piston kits are designed for Sea-Doo 580 personal watercraft engines from 1990 to 1996, providing a direct replacement for worn pistons with a slight oversize to restore compression. Each kit includes two pistons and necessary rings, allowing a complete top-end refresh. The 76.5mm bore size delivers a modest performance boost while maintaining reliability.

Built For Performance

• .020 over bore increases displacement for added power
• Namura pistons are precision-machined from high-strength aluminum alloy
• Includes piston rings pre-gapped for quick installation
• Designed to match OEM specifications for a proper fit
• Ideal for rebuilding worn Sea-Doo 580 engines

Fits These Machines

• for Sea-Doo 580 (1990-1996)

On-The-Job Use

• Rebuilding Sea-Doo 580 engines after wear or damage
• Restoring compression and performance in older personal watercraft
• Performing a top-end overhaul during routine maintenance
• Increasing engine output with a mild oversize bore

Specs At A Glance

Good To Know

Q: Will these piston kits fit my Sea-Doo 580? A: They are made for the Sea-Doo 580 engine from 1990 to 1996, but always check your engine serial number and cylinder bore condition before purchase.

Q: Do these pistons include rings and pins? A: Each kit includes two pistons and piston rings, but wrist pins and circlips are not included, so you may need to reuse or purchase separately.

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