SPI .020 Over Bore Piston Kit for Ski-Doo 500 Fan Cooled Sleds 72.5mm SEE DESC

SPI .020 Over Bore Piston Kit for Ski-Doo

This SPI .020 over bore piston kit replaces the factory piston in Ski-Doo 500 Fan Cooled snowmobiles, providing a 72.5mm bore size to restore top-end performance after cylinder wear.

Overview

The SPI .020 over bore piston kit is a direct-fit replacement for Ski-Doo 500 Fan Cooled sleds, designed to rebuild worn cylinders with a 72.5mm oversize piston. This kit delivers reliable compression and smooth power for snowmobile engines, making it an essential component for a top-end rebuild on Ski-Doo 500 Fan Cooled models.

Built For Performance

• Precision-machined 72.5mm piston with .020 oversize
• High-strength aluminum alloy construction for durability
• Includes piston rings and pin for complete installation
• Compatible with Ski-Doo 500 Fan Cooled engine platform
• Engineered for consistent compression and long service life

Fits These Machines

• for Ski-Doo 500 Fan Cooled snowmobiles

On-The-Job Use

• Suitable for top-end rebuilds on Ski-Doo 500 Fan Cooled sleds
• Used in recreational snowmobiling and trail riding
• Restores lost power and oil consumption from worn cylinders
• Suitable for both DIY mechanics and professional shops

Specs At A Glance

Good To Know

Q: Will this piston kit work with stock cylinder? A: This .020 over bore kit is intended for cylinders that have been bored to the matching oversize; a stock cylinder must be machined to accept this piston.

Q: Do I need to replace the piston on both cylinders? A: This kit includes one piston; for twin-cylinder Ski-Doo 500 Fan Cooled engines, two kits are required for a complete rebuild.

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