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

Standard Bore Top End Repair Kit for Ski-Doo

This standard bore top end repair kit for Ski-Doo provides all necessary components to rebuild the cylinder and piston assembly for MXZ 670 HO and Summit X snowmobiles for 78mm bore size.

Overview

This standard bore top end repair kit for Ski-Doo is a complete assembly designed to restore compression and power in MXZ 670 HO and Summit X engines. The kit includes pistons, rings, wrist pins, and gaskets for a reliable rebuild. It is specifically engineered for Ski-Doo 670cc two-stroke engines.

Built For Performance

• Precision-machined pistons for consistent fit
• High-strength rings for optimal sealing
• Includes wrist pins and circlips for secure assembly
• Complete gasket set for leak-free installation
• Manufactured to stringent tolerances for long service life

Fits These Machines

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

On-The-Job Use

• Trail riding snowmobiles requiring engine overhaul
• Mountain climbing applications needing reliable power
• Recreational riding where top-end performance is critical

Specs At A Glance

Good To Know

Q: Does this kit include everything for a top-end rebuild? A: Yes, the kit includes pistons, rings, wrist pins, circlips, and all necessary gaskets for a complete top-end overhaul.

Q: Is this kit compatible with stock cylinders? A: This standard bore kit is designed for cylinders that have not been overbored and accepts OEM-spec 78mm pistons.

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