Namura Technologies NA-40004R OEM Style Piston Rings Standard Bore

The Namura Technologies NA-40004R piston ring set delivers OEM-quality replacement rings engineered for reliable performance and durability. Designed to work seamlessly with both OEM and Namura pistons, these rings provide the precise fit and gas-tight seal necessary for optimal engine compression and performance.

Key Features:

• Constructed from highly ductile cast iron or stainless steel alloy for excellent wear resistance
• Chrome, phosphate, or nitride coatings applied to meet demanding operating conditions
• Precision-manufactured to OEM specifications for proper fit and function
• Compatible with OEM pistons as well as Namura piston assemblies
• Standard bore sizing for stock cylinder applications
• Engineered for gas-tight sealing and optimal compression

What's Included:

• Complete piston ring set (compression rings and oil control ring assembly)

Namura's piston rings are manufactured using premium materials specifically selected for their application, with considerations for cylinder sleeve type, coating, engine size, and stroke design. The oil control ring features a three-piece design with two scraper rails and an expander ring for superior oil management. Installation should follow proper ring gap specifications and stagger procedures as outlined in your service manual.