Namura .040 Over Bore Piston Rings fits Polaris Hawkeye & Sportsman 300 78.7mm

.040 Over Bore Piston Rings for Polaris

These Namura .040 over bore piston rings for Polaris are designed for re-bored cylinders to maintain tight tolerances and optimal engine compression.

Overview

These Namura .040 over bore piston rings for Polaris restore performance in engines that have undergone machine work. Choosing the right Namura .040 over bore piston rings for Polaris is critical for preventing power loss due to cylinder wear. This set is built to meet the rigorous demands of agricultural and trail riding engines.

Built For Performance

• Resistant to high combustion temperatures
• Optimized for over-bored cylinder walls
• Consistent tension across the ring face
• Designed for 78.7mm bore sizing

Fits These Machines

• for Polaris Hawkeye 300
• for Polaris Sportsman 300

On-The-Job Use

• Completing a cylinder re-bore project
• Restoring engine power after a seize
• Routine engine maintenance for utility work

Specs At A Glance

Good To Know

Q: What does the .040 measurement indicate? A: It refers to the amount the cylinder has been enlarged beyond the factory standard diameter. Q: Can these be used in a stock cylinder? A: No, these rings will be too large and will cause engine failure in a stock bore.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.