Namura .040 Over Bore Piston Rings for Polaris Most 2001-2006 90 2-Stroke 53mm

.040 Over Bore Piston Rings for for Namura

These .040 over bore piston rings for for Namura, sized at 53mm, provide the seal necessary to restore compression to your 2-stroke engine.

Overview

These .040 over bore piston rings for for Namura are precision components engineered to fit bored cylinders requiring an extra .040 of diameter. By choosing these .040 over bore piston rings for for Namura, you ensure your engine achieves the correct compression for efficient power delivery. This set is essential for completing a professional-grade top-end rebuild.

Built For Performance

• Superior ring tension for a reliable seal
• Engineered for 53mm bore requirements
• Heat-treated for durability in 2-stroke applications
• High-precision finish for quick seating

Fits These Machines

• for Polaris 90 2-Stroke 2001-2006

Specs At A Glance

Good To Know

Q: What does .040 over mean? A: It refers to the size above standard factory diameter required for cylinders that have been bored out to clean up wear. A: Use these rings only with pistons sized for the corresponding bore.

Q: How do I check my bore size? A: Use a precision bore gauge or micrometer to measure the inner diameter of your cylinder before purchasing. Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.