2 Sets of SPI Standard Bore Piston Rings for Polaris 550 F/C Snow 1999-2021 73mm

Standard Bore Piston Rings for Polaris

These two sets of standard bore piston rings are for Polaris 550 F/C Snow engines from 1999 to 2021 with a 73mm bore, restoring compression and sealing.

Overview

These standard bore piston rings are designed for Polaris 550 F/C Snow engines manufactured between 1999 and 2021, featuring a 73mm bore size. Each set contains rings for one piston, and this listing includes two sets for a complete top-end rebuild of two cylinders or one spare set.

Built For Performance

• Precision-machined to 73mm standard bore size
• Made from high-strength cast iron for durability
• Provides consistent ring tension for effective compression sealing
• Includes both compression and oil control rings per set
• Meets or exceeds OEM performance specifications

Fits These Machines

• for Polaris 550 F/C Snow (1999-2021)

On-The-Job Use

• Snowmobile engine rebuild projects
• Restoring lost compression and power
• Replacing worn rings during top-end overhaul

Specs At A Glance

Good To Know

Q: Can these rings be used on a non-standard bore cylinder? A: These are standard bore rings intended for cylinders with original 73mm bore; oversized bores require oversize rings.

Q: Should I replace the wrist pins and circlips with the rings? A: It is good practice to replace wrist pins and circlips during a top-end rebuild, but they are not included in this kit.

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