Namura .040 Over Bore Top End Kit for Sea-Doo 580 for 1990-1996 77mm SEE LIST

Namura .040 Over Bore Top End Kit for Sea-Doo

This Namura .040 Over Bore Top End Kit for Sea-Doo provides a complete piston and ring set for oversize rebuilding of Sea-Doo 580 engines from 1990 to 1996, featuring a 77mm bore size to accommodate worn cylinders.

Overview

The Namura .040 Over Bore Top End Kit for Sea-Doo is a premium replacement kit for the Sea-Doo 580 watercraft engine when a standard bore is no longer sufficient. It includes an oversized piston, rings, wrist pin, and circlips machined to 77mm to restore compression and performance. This kit is intended for 1990-1996 Sea-Doo 580 models that require an overbore repair.

Built For Performance

• Oversized piston at 77mm allows repair of worn cylinders
• High-strength alloy construction for durability
• Low-friction ring set improves sealing and reduces wear
• Complete kit includes wrist pin and circlips
• Precision-machined to match OEM specifications

Fits These Machines

• for Sea-Doo 580 (1990-1996)

On-The-Job Use

• Rebuilds engines that have been bored oversize due to wear
• Restores compression and power output
• Enables continued use of watercraft after cylinder damage
• Suitable for high-hour engines requiring rebuild

Specs At A Glance

Good To Know

Q: What components are included in the kit? A: The kit typically includes a piston, rings, wrist pin, and circlips, but please refer to the included list for exact contents.

Q: Is this kit compatible with my specific Sea-Doo serial number? A: Fitment may vary based on serial number, so confirm compatibility before ordering using the provided list.

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