Namura Piston Rings .040 Over Bore for Yamaha 1983-2006 PW80 1986-1990 BW80 48mm
Namura Piston Rings .040 Over Bore for Yamaha 1983-2006 PW80 1986-1990 BW80 48mm
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Piston Rings for Namura
These piston rings for Namura are sized for a .040 over bore to seal the combustion chamber and manage oil consumption.
Overview
The piston rings for Namura are critical for restoring compression in worn cylinders that have been bored out. Each set of piston rings for Namura ensures proper heat transfer from the piston to the cylinder wall.
Built For Performance
- Hardened material for extended wear life
- Precision-engineered for .040 over bore sizing
- Maintains consistent ring tension
- Designed for 48mm piston diameter
Fits These Machines
- for Yamaha PW80 1983-2006
- for Yamaha BW80 1986-1990
Specs At A Glance
| Bore Size | .040 Over Bore |
| Piston Diameter | 48mm |
Good To Know
Q: How do I measure for .040 over bore? A: A machine shop must measure the cylinder to confirm the necessary over-bore diameter before installation.
Q: Is a break-in period required? A: Yes, a standard ring seating procedure should be followed after engine assembly.
Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.
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