Namura Standard Bore Piston Rings for Polaris Big Boss 250 4x6 6x6 1989-93 72mm

Namura Standard Bore Piston Rings for Polaris

These Namura standard bore piston rings for Polaris are designed to seal the combustion chamber and maintain compression in 250cc engines.

Overview

The Namura standard bore piston rings for Polaris serve as a critical component in cylinder rebuilds to prevent blow-by and ensure efficient operation. By utilizing these Namura standard bore piston rings for Polaris, owners can restore power loss caused by worn rings. These Namura standard bore piston rings for Polaris are engineered to exact tolerances for a proper cylinder wall interface.

Built For Performance

• Hardened alloy for long service life
• Precision gap sizing for standard bores
• Maintains consistent cylinder pressure
• Excellent oil control properties

Fits These Machines

• for Polaris Big Boss 250 4x6 1989-1993
• for Polaris Big Boss 250 6x6 1989-1993

On-The-Job Use

• Rebuilding top ends to restore factory compression
• Repairing engines suffering from excessive oil consumption
• Refreshing internal engine components during routine maintenance

Specs At A Glance

Good To Know

Q: Should the cylinder be honed before install? A: Yes, a light hone is necessary to ensure the new rings seat correctly against the cylinder wall.

Q: Are these compatible with non-standard pistons? A: These rings are specified for standard 72mm bore pistons and may not fit oversized aftermarket options.

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