SPI .020 Over Bore Piston Rings for Polaris 340 Snow Most 1994-2008 62.8mm

.020 Over Bore Piston Rings for Polaris

These SPI .020 over bore piston rings are engineered for Polaris 340 snowmobile engines to accommodate a bored cylinder and restore peak engine compression.

Overview

The .020 over bore piston rings provide the necessary seal for Polaris 340 engines that have undergone cylinder reconditioning. These .020 over bore piston rings maintain precise clearance for improved power output. Technicians prefer these .020 over bore piston rings for reliable performance in rebuilt snowmobile engines.

Built For Performance

• Precision sized for a .020 overbore application
• Constructed from high-strength materials to resist wear
• Designed for even distribution of ring tension
• Ensures proper thermal transfer from piston to cylinder

Fits These Machines

• for Polaris 340 1994-2008

On-The-Job Use

• Engine rebuilds following cylinder over-boring
• Restoration of lost compression in aging engines
• Extended service life for high-hour snowmobile blocks

Specs At A Glance

Good To Know

Q: Do I need to measure my cylinder before ordering? A: Yes, confirm the cylinder has been bored to the .020 specification before installation. A: Rings are not interchangeable across different bore sizes.

Q: Is a new piston required with these rings? A: Since these are over-bore rings, you must be using a corresponding .020 over-size piston. A: Matching the ring set to the correct oversized piston is critical for engine safety.

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