Namura Technologies NA-50100-2R Piston Ring - Set 57.88mm

The Namura Technologies NA-50100-2R piston ring set is precision-engineered for 57.88mm bore applications, delivering reliable sealing performance and durability in demanding powersports environments.

Compression Ring Construction:

Namura compression rings are manufactured from either highly ductile cast iron or stainless steel alloy, both selected for their excellent wear resistance and ability to maintain a gastight seal under extreme operating conditions. Advanced surface treatments including chrome, phosphate, and nitride coatings are applied to meet the specific demands of high-performance applications.

Oil Ring Assembly:

The oil ring system consists of three precision components working together to control oil consumption and maintain proper lubrication. Two scraper rails constructed from highly ductile cast iron or stainless steel alloy feature chrome, nitride, or phosphate coatings for enhanced wear resistance. A single stainless steel expansion ring provides consistent tension to keep the scraper rails in contact with the cylinder wall.

Key Features:

• 57.88mm bore diameter for precise fitment
• High-quality cast iron or stainless steel alloy construction
• Advanced surface coatings (chrome, phosphate, or nitride) for extended service life
• Three-piece oil ring design for superior oil control
• Engineered for gastight compression sealing
• Direct replacement OEM-quality components

This ring set provides the quality and performance needed for professional engine rebuilds and restorations, ensuring proper compression and oil control for optimal engine performance.