SPI .020 Over Bore Piston Kit for Ski-Doo 1999-2020 600 non-HO & 500SS 76.5mm

SPI .020 Over Bore Piston Kit for Ski-Doo

This SPI .020 over bore piston kit is a direct replacement for Ski-Doo 600 non-HO and 500SS snowmobile engines from 1999 to 2020, featuring a 76.5mm bore size to restore compression and power after cylinder wear. It includes the piston, rings, wrist pin, and circlips for a complete top-end rebuild.

Overview

This SPI .020 over bore piston kit is designed for Ski-Doo 600 non-HO and 500SS models, providing a 76.5mm bore to match over-bored cylinders. It is ideal for rebuilding snowmobile engines to factory-like performance, with all necessary components included for a straightforward installation. The SPI piston kit delivers durability and consistent power for recreational and performance riding.

Built For Performance

• Precision-machined 76.5mm piston for a .020 over bore fit
• High-strength aluminum alloy construction for heat resistance
• Includes piston rings with optimal tension for reduced blow-by
• Wrist pin and circlips supplied for secure assembly
• Designed to meet OEM specifications for Ski-Doo engines

Fits These Machines

• for Ski-Doo 600 non-HO (1999-2020)
• for Ski-Doo 500SS (1999-2020)

On-The-Job Use

• Trail riding and mountain snowmobiling where engine rebuild is needed
• After cylinder honing or boring to restore compression
• Competitive snow cross and recreational use
• Winter maintenance to extend engine life

Specs At A Glance

Good To Know

Q: Do I need to hone the cylinder before installing this piston kit? A: Yes, the cylinder should be professionally honed to the correct clearance for a .020 over bore piston to ensure proper ring seating and oil control.

Q: Can this piston kit be used with a stock carburetor or EFI system? A: Yes, it is designed to work with the original fuel delivery system, but we recommend checking jetting or tuning after installation for optimal performance.

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