SPI .020 Over Bore Top End Repair Kit for Ski-Doo 670 some 1995-1996 78.5mm

SPI .020 Over Bore Top End Repair Kit for Ski-Doo

This SPI .020 over bore top end repair kit fits Ski-Doo 670 snowmobiles from 1995-1996, sized at 78.5mm and providing pistons, rings, and gaskets for a complete top end rebuild.

Overview

The SPI .020 over bore top end repair kit provides the pistons, rings, and gaskets needed to rebuild the top end of Ski-Doo 670 engines. This 78.5mm kit is designed for 1995-1996 models, delivering the precise overbore required to restore compression and power. It's a cost-effective way to overhaul your Ski-Doo two-stroke top end and keep your machine running strong.

Built For Performance

• Premium cast pistons with coated skirts reduce friction
• Chrome-plated rings provide excellent cylinder seal
• Complete gasket set included for a thorough rebuild
• .020 overbore allows reuse of the original cylinder after machining
• Exact fit for Ski-Doo 670 78.5mm cylinder bore

Fits These Machines

• for Ski-Doo 670 (1995-1996)

On-The-Job Use

• Rebuilding worn top end on Ski-Doo snowmobiles
• Restoring compression and performance after high mileage
• Repairing seized or scored pistons and cylinders
• Preparing for a new season of trail riding or mountain riding

Specs At A Glance

Good To Know

Q: Do I need to machine the cylinder for this overbore? A: Yes, the cylinder must be bored to 78.5mm to match the .020 overbore pistons; this kit is not a direct bolt-in for standard bore engines.

Q: Does the kit include wrist pins and bearings? A: Typically no, they must be purchased separately if not included; always check your existing parts for reuse.

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