Namura .020 Over Bore Piston Kit for Polaris 300 Xplorer, Xpress, Big Boss 75mm

Namura .020 Over Bore Piston Kit for Polaris

This .020 over bore piston kit from Namura is a direct replacement for Polaris 300 ATVs, providing a 75mm bore size to restore engine compression and power.

Overview

This .020 over bore piston kit is designed to refresh the top end of Polaris 300 engines. It includes a piston, rings, and pin for a complete rebuild. Whether for the Xplorer, Xpress, or Big Boss, this piston kit delivers like-new performance.

Built For Performance

• Precision machined .020 oversize piston for exact fitment
• Includes piston, rings, and pin for a complete top-end kit
• High-strength aluminum alloy for durability
• 75mm bore designed for Polaris 300 models

Fits These Machines

• for Polaris 300 Xplorer
• for Polaris 300 Xpress
• for Polaris Big Boss

On-The-Job Use

• Engine rebuilding for Polaris 300 ATVs
• Restoring power after piston wear
• Trail riding and utility use

Specs At A Glance

Good To Know

Q: What does .020 over bore mean? A: It indicates the cylinder has been bored 0.020 inches oversize, requiring this oversized piston for proper fit.

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

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