Namura .010 Over Bore Piston Rings for Yamaha PW50 fits 1981-2024 Models 40.25mm

Piston Rings for for Yamaha

These .010 over bore piston rings for for Yamaha PW50 40.25mm replace worn rings to restore cylinder sealing and engine compression.

Overview

Engineered for the small-bore engines found in youth bikes, these .010 over bore piston rings for for Yamaha PW50 40.25mm maintain consistent combustion chamber pressure. These .010 over bore piston rings for for Yamaha PW50 40.25mm are constructed to withstand the high-RPM demands of 2-stroke operation. Regular replacement of these .010 over bore piston rings for for Yamaha PW50 40.25mm helps prevent power loss and oil fouling.

Built For Performance

• Engineered for 2-stroke heat cycles
• Wear-resistant alloy composition
• Precisely sized for .010 over bore cylinders
• Superior sealing against blow-by

Fits These Machines

• for Yamaha PW50 1981-2024

On-The-Job Use

• Top-end engine rebuilds for mini-bikes
• Restoring power to engines with low compression
• Repairing cylinder scoring or worn rings

Specs At A Glance

Good To Know

Q: Do I need to hone the cylinder before installing these rings? A: Yes, lightly honing the cylinder wall is necessary to help these piston rings for for Yamaha seat properly during the break-in process.

Q: How do I identify if I need .010 over rings? A: You must measure your cylinder bore to confirm it has been machined to a .010 over specification before purchasing these piston rings for for Yamaha.

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