SPI Standard Bore Piston Kit for Ski-Doo MXZ 670 HO & Summit X 670 HO 78mm

SPI Standard Bore Piston Kit for Ski-Doo

This SPI standard bore piston kit is designed for Ski-Doo MXZ 670 HO and Summit X 670 HO snowmobiles, featuring a 78mm bore size to restore engine compression and performance.

Overview

The SPI standard bore piston kit provides a direct replacement for worn pistons in Ski-Doo 670 HO engines. This 78mm kit includes piston, rings, wrist pin, and circlips for a complete rebuild. It is intended for riders maintaining or restoring their Ski-Doo MXZ 670 HO or Summit X 670 HO snowmobiles to factory specs.

Built For Performance

• Precision-machined 78mm bore diameter for exact fit
• High-strength aluminum alloy construction for durability
• Includes premium ring set for optimal compression sealing
• Wrist pin and circlips included for complete installation
• Designed for stock bore applications in Ski-Doo 670 HO engines

Fits These Machines

• for Ski-Doo MXZ 670 HO
• for Ski-Doo Summit X 670 HO

On-The-Job Use

• Used for top-end rebuilds on Ski-Doo snowmobiles
• Ideal for restoring lost compression and power
• Commonly installed during off-season engine maintenance
• Suitable for recreational trail riding and mountain riding applications

Specs At A Glance

Good To Know

Q: Does this piston kit come with rings? A: Yes, the kit includes a complete set of piston rings, wrist pin, and circlips for a full installation.

Q: What is the bore size? A: This is a standard bore 78mm piston kit intended for engines that have not been overbored.

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