SPI .020 Over Bore Piston Rings for Polaris 550 Fan Cooled Snow 1999-2006 73.5mm

.020 Over Bore Piston Rings for Polaris

These replacement .020 over bore piston rings are designed to restore compression in rebuilt snowmobile engines.

Overview

These .020 over bore piston rings provide a tight seal for cylinders bored 0.5mm over standard size. High-quality .020 over bore piston rings help maintain combustion pressure for consistent power delivery. Engine longevity is supported by using these precision .020 over bore piston rings.

Built For Performance

• Designed for 73.5mm bore
• High-temperature durability
• Maintains consistent ring tension
• Precision engineered fit
• Reduces blow-by

Fits These Machines

• for Polaris 550 Fan Cooled Snow 1999-2006

Specs At A Glance

Good To Know

Q: Is this set for one or two pistons? A: This set is for one piston as specified by the application.

Q: What is the primary material? A: These rings are made from high-strength cast iron or steel alloys designed for two-stroke thermal expansion.

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