Restore proper compression and sealing with Namura NA-40011R piston rings, designed for use with 84.45 mm Namura pistons in select Yamaha applications. These replacement rings are intended specifically for Namura pistons, helping maintain the correct fit and function within the piston and cylinder assembly.
Manufactured by Namura and sold under vendor part number NA-40011R, this piston ring set is a practical replacement component for engine rebuilding, top-end service, and piston maintenance. Verify the existing piston size, engine model, and ring configuration before installation to ensure compatibility. The rings are not intended as a universal replacement and should be used only with the appropriate Namura piston application.
Namura NA-40011R rings support dependable cylinder sealing when installed according to the manufacturer’s service procedures. Proper installation, ring orientation, end-gap inspection, and cylinder preparation are essential for achieving reliable performance and service life. For accurate fitment, confirm that your Yamaha engine uses an 84.45 mm Namura piston and that the replacement rings match the original specification.
Features:
- Fitment: Designed for use with 84.45 mm Namura pistons
- Application: Compatible with select Yamaha engine applications
- Brand: Namura
- Manufacturer: Namura
- Part Number: NA-40011R
- Product Type: Replacement piston rings
- Installation: Verify piston, engine model, ring configuration, and service specifications before installation