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

2 Namura .040 Over Bore Piston Kits for Sea-Doo

These two Namura .040 over bore piston kits are designed for Sea-Doo 580 personal watercraft from 1990 to 1996, featuring a 77mm bore size to replace worn pistons and restore engine compression.

Overview

These 2 Namura .040 over bore piston kits are precision-crafted for Sea-Doo 580 engines built between 1990 and 1996. Each kit includes rings and wrist pin, providing a complete piston replacement for the 77mm bore. Ideal for restoring compression and performance in your Sea-Doo watercraft, these piston kits deliver reliable operation.

Built For Performance

• Precision-machined from high-strength aluminum alloy
• Includes .040 over bore rings for proper sealing
• Lightweight design reduces reciprocating mass
• Heat-treated for durability under high RPM
• Direct replacement for original pistons

Fits These Machines

• for Sea-Doo 580 (1990-1996)

On-The-Job Use

• Rebuilding or replacing worn pistons in Sea-Doo 580 engines
• Maintaining or restoring performance in personal watercraft
• Engine overhaul and top-end rebuilds

Specs At A Glance

Good To Know

Q: Are these piston kits compatible with stock cylinders? A: Yes, the .040 over bore size requires the cylinder to be bored to match; they are designed for engines already bored .040 over.

Q: Does this kit include piston rings and pins? A: Yes, each kit includes rings and a wrist pin for a complete piston replacement.

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