SPI .040 Over Bore Piston Rings for Polaris 550 Fan Cooled Snow 1999-2006 74mm

.040 Over Bore Piston Rings for Polaris

These replacement .040 over bore piston rings restore proper compression and combustion efficiency for snowmobile engines.

Overview

These .040 over bore piston rings are engineered for engines that have undergone cylinder re-boring to increase displacement. By utilizing these .040 over bore piston rings, you ensure a tight seal between the piston and the cylinder wall. These .040 over bore piston rings provide the necessary tension for long-term engine reliability.

Built For Performance

• Designed for 74mm bore diameter
• High-tensile material strength
• Enhanced heat resistance
• Standard ring gap tolerance
• Precision machined for smooth operation

Fits These Machines

• for Polaris 550 Fan Cooled Snow 1999-2006

Specs At A Glance

Good To Know

Q: Is this a full set for one piston? A: Yes, this set covers the rings required for a single cylinder.

Q: Should I check ring end gap? A: Always verify end gap specifications according to your engine service manual before final assembly.

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