Namura Technologies NW-40000-2R Piston Ring Set for Yamaha PWC

The Namura Technologies NW-40000-2R is a premium replacement piston ring kit designed specifically for Yamaha personal watercraft engines. This complete ring set delivers OEM-quality performance and durability for reliable engine sealing and compression.

Compression Ring Construction:

• Manufactured from highly ductile cast iron or stainless steel alloy for superior wear resistance
• Advanced chrome, phosphate, or nitride coatings engineered to withstand demanding marine environments
• Precision-engineered for gastight sealing and optimal compression retention

Oil Ring Assembly:

• Three-piece design consisting of two scraper rails and one expansion ring
• Scraper rails constructed from highly ductile cast iron or stainless steel alloy
• Chrome, nitride, or phosphate coated rails for extended service life
• Stainless steel expansion ring provides consistent tension throughout the operating range

Namura Technologies rings are manufactured to exacting tolerances to ensure proper fit, excellent oil control, and long-lasting performance in Yamaha PWC applications. This ring kit provides everything needed to restore engine compression and reduce blow-by during your rebuild.