Namura .040 Over Bore Piston Rings for Polaris 2001-2006 50 2-Stroke ATV's 41mm

.040 Over Bore Piston Rings for for Namura

These .040 over bore piston rings for for Namura restore compression and power to 41mm 2-stroke engines.

Overview

These .040 over bore piston rings for for Namura are designed for engine rebuilds requiring a cylinder bore clearance of .040 over stock. These .040 over bore piston rings for for Namura help seal the combustion chamber to prevent blow-by and oil consumption. Each set is crafted to provide a tight seal for reliable engine operation.

Built For Performance

• Precision machined for tight sealing performance
• High-temperature alloy construction
• Designed for rapid break-in cycles
• Maintains consistent radial tension across the cylinder wall

Fits These Machines

• for Polaris 50 2-Stroke 2001-2006

Specs At A Glance

Good To Know

Q: Why do I need oversized rings? A: You use these when your cylinder has been machined or bored out to remove surface imperfections. A: Always verify your cylinder bore diameter before installation to ensure the correct ring gap.

Q: Do these require a break-in period? A: Yes, gentle operation for the first few hours is recommended to allow the rings to seat against the cylinder wall properly. Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.