Namura .020 Over Bore Piston Rings for Yamaha 700 PWC fits 1993-2020 81.5mm

.020 Over Bore Piston Rings for Namura

This set of .020 over bore piston rings for Namura replaces worn compression components to restore proper cylinder sealing in Yamaha 700 PWC engines. These piston rings for Namura are engineered to maintain high internal pressure and support optimal engine longevity.

Overview

These .020 over bore piston rings for Namura are designed to provide a precise seal within the cylinder bore for improved combustion efficiency. Operators utilize these piston rings for Namura during engine rebuilds to compensate for cylinder wear and ensure the 81.5mm bore remains within tolerance. This component is an essential part for mechanics servicing Yamaha watercraft.

Built For Performance

• Precision machined for 81.5mm cylinder bores
• Hardened steel construction for high heat resistance
• Enhanced ring tension to minimize blow-by
• Chrome coated surfaces reduce friction during operation
• Compatible with standard aftermarket pistons

Fits These Machines

• for Yamaha 1993-2020 700 PWC models

On-The-Job Use

• Restoring compression in high-hour PWC engines
• Engine overhauling after top-end cylinder wear
• Routine maintenance for race or recreation craft

Specs At A Glance

Good To Know

Q: When should these rings be installed? A: These should be installed when the cylinder block has been bored .020 over to accommodate new oversized pistons.

Q: Do I need to gap these rings? A: Yes, always verify ring end gap in the cylinder bore before installation to ensure the clearances meet manufacturer specifications.

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