Namura Standard Bore Piston Rings for Yamaha 1983-2006 PW80 1986-1990 BW80 47mm

Piston Rings for Yamaha

These standard bore piston rings provide a factory-spec seal for the combustion chamber in 47mm cylinder bores for Yamaha PW80 and BW80 models.

Overview

These piston rings for Yamaha engines provide a fresh, factory-grade seal for your 1983-2006 PW80 or 1986-1990 BW80. Designed as a direct-fit component, these piston rings for Yamaha ensure that your engine maintains optimal compression and peak performance. This set is sized for engines utilizing a standard 47mm bore.

Built For Performance

• Maintains factory compression ratios
• Engineered for long-lasting wear resistance
• Heat-treated for optimal tension
• Precision gap sizing
• Consistent oil scraping performance

Fits These Machines

• for Yamaha 1983-2006 PW80
• for Yamaha 1986-1990 BW80

On-The-Job Use

• Refreshing the top-end of a daily rider
• Replacing worn rings to stop exhaust smoke
• Maintenance during standard engine rebuilds

Specs At A Glance

Good To Know

Q: Should I check ring gap? A: Yes, always verify the ring end gap inside the cylinder to ensure it meets factory specifications.

Q: How do I ensure they last? A: Following proper engine break-in procedures helps the rings seat fully against the cylinder wall.

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