Restore proper piston performance with Namura NA-40019R piston rings, designed specifically for 49.00 mm Namura pistons used in select Yamaha applications. These replacement rings help support effective combustion sealing, controlled oil consumption, and consistent engine operation when installed with a compatible Namura piston and cylinder assembly.
Manufactured by Namura and identified by manufacturer part number NA-40019R, this ring set is intended for Namura pistons only. Confirm the piston model, engine application, and ring specification before installation to ensure correct fitment. The rings are suitable for repair or rebuild work where worn or damaged piston rings may contribute to reduced compression, increased oil usage, or diminished performance.
Install the rings according to the applicable Yamaha and Namura service instructions, including correct ring orientation, end-gap inspection, and cylinder preparation. Proper installation is essential for dependable sealing and piston break-in. This product is a replacement ring set and does not include a piston or other engine components.
Features:
- Size: 49.00 mm piston ring specification
- Application: Designed for use with Namura pistons only
- Fitment: Intended for select Yamaha engine applications using compatible Namura pistons
- Brand: Namura
- Manufacturer Part Number: NA-40019R
- Function: Supports compression sealing and oil control in the piston and cylinder assembly