Namura .060 Over Bore Top End Repair Kit for Polaris 350 2-Stroke ATV's 81.5mm

.060 Over Bore Top End Repair Kit for Polaris

This .060 over bore top end repair kit for Polaris 350 2-stroke ATVs provides an oversized piston and rings for engines bored to 81.5mm. It is the correct .060 over bore top end repair kit when your cylinder has been machined to the next oversize. This top end repair kit ensures a proper fit for Polaris 350 engines needing an overbore.

Overview

This .060 over bore top end repair kit is a complete rebuild set for Polaris 350 2-stroke ATVs that have been bored to 81.5mm. It includes an oversized piston, rings, wrist pin, circlips, and gaskets. The kit is intended for mechanics or enthusiasts performing a top end rebuild on a Polaris 350 that requires an oversized piston.

Built For Performance

• Oversized cast piston for 81.5mm bore (.060 over)
• Chrome piston rings designed for the larger bore
• Includes wrist pin and circlips for secure attachment
• Complete gasket set prevents leaks after reassembly
• Machined to meet or exceed OEM tolerances

Fits These Machines

• for Polaris 350 2-Stroke ATV (with 81.5mm bore)

On-The-Job Use

• Recreational trail riding on Polaris 350 ATVs
• Utility tasks requiring reliable engine performance
• Engine rebuilding projects for vintage two-stroke ATVs

Specs At A Glance

Good To Know

Q: Is this kit compatible with standard bore Polaris 350 engines? A: No, this .060 over bore kit is designed only for cylinders that have been bored to 81.5mm; standard bore engines require the 80mm kit.

Q: Do I need to hone the cylinder before installing this kit? A: Yes, the cylinder must be properly bored and honed to the specified 81.5mm size before installing the oversized piston and rings.

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