2 SPI Standard Bore Piston Kits for Ski-Doo fits 1993-1999 670 non-HO Sleds 78mm

2 SPI Standard Bore Piston Kits for Ski-Doo

These two replacement piston kits with 78mm standard bore are designed for 1993-1999 Ski-Doo 670 non-HO snowmobile engines, providing a direct fit for rebuilding the top end.

Overview

This set of two SPI standard bore piston kits is intended for Ski-Doo 670 non-HO snowmobile engines from 1993 to 1999, delivering the necessary components to restore compression and performance. Each kit includes a 78mm piston, rings, and wrist pin, making it a complete solution for a top-end rebuild on these popular two-stroke sleds.

Built For Performance

• 78mm standard bore diameter for precise fit in Ski-Doo 670 non-HO cylinders
• Includes piston, rings, and wrist pin for a complete kit
• Manufactured to OEM specifications by SPI for reliable performance
• Designed for use in both stock and slightly worn cylinders requiring standard bore
• Helps restore lost compression and improve engine response

Fits These Machines

• for Ski-Doo 670 non-HO snowmobiles (1993-1999)

On-The-Job Use

• Snowmobile trail riding and recreational use
• Rebuilding engines after high-mileage wear
• Replacing worn pistons during off-season maintenance
• Restoring power to vintage Ski-Doo sleds

Specs At A Glance

Good To Know

Q: Are these pistons compatible with both HO and non-HO versions? A: No, these are specifically for non-HO 670 engines; HO models use different piston designs and should not be used.

Q: Do the kits include gaskets? A: No, these kits contain pistons, rings, and wrist pins only; separate gasket sets are recommended for a full top-end rebuild.

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