Namura Standard Bore Piston Rings fits Polaris Hawkeye & Sportsman 300 77.7mm

Standard Bore Piston Rings for Polaris

These standard bore piston rings for Polaris ensure a proper seal between the piston and cylinder wall to maintain optimal compression and engine power.

Overview

These standard bore piston rings for Polaris are precision-manufactured by Namura to restore engine efficiency and prevent blow-by. By installing these standard bore piston rings for Polaris, you restore the internal combustion seal required for consistent power delivery across the RPM range. This set is engineered to match the heat expansion properties of your engine block.

Built For Performance

• Standard 77.7mm bore specification
• Durable ring material for reduced friction and wear
• Maintains consistent cylinder wall contact
• Prevents oil consumption caused by ring wear
• Engineered for rapid break-in cycles

Fits These Machines

• for Polaris Hawkeye 300
• for Polaris Sportsman 300

On-The-Job Use

• Top-end engine rebuilds and cylinder maintenance
• Correcting low compression issues identified via leak-down test
• Replacing rings during piston service cycles

Specs At A Glance

Q: Should I hone the cylinder before installation? A: Deglazing the cylinder wall is necessary to ensure the new rings seat correctly. Q: Do these require end-gap checking? A: Always verify ring end-gap within the cylinder before final assembly to ensure manufacturer specifications are met.

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