Namura Standard Bore Piston & Gasket Kit for Polaris 330 4-Stroke ATVs 78.5mm

Standard Bore Piston & Gasket Kit for Polaris

This Namura Standard Bore Piston & Gasket Kit is a complete top-end rebuild solution for Polaris 330 4-Stroke ATVs, featuring a 78.5mm bore piston and all necessary gaskets to restore compression and performance.

Overview

Designed specifically for the Polaris 330 engine, this Standard Bore Piston & Gasket Kit includes a precision-machined piston and full gasket set for a reliable top-end overhaul. Suitable for recreational and utility ATVs, this kit offers an affordable way to refresh your engine. The 78.5mm piston matches the factory bore size for direct replacement.

Built For Performance

• Precision-cast piston matched to 78.5mm bore
• High-strength chrome-plated rings for reduced wear
• Includes wrist pin and circlips for secure installation
• Complete gasket set covers cylinder, head, and base
• Engineered for long service life in 4-stroke ATVs

Fits These Machines

• for Polaris Sportsman 330
• for Polaris Scrambler 330
• for Polaris Trail Blazer 330
• for Polaris Xplorer 330

On-The-Job Use

• Trail riding and recreational ATV use
• Utility work and farm chores
• Hunting and outdoor expeditions
• Restoring older Polaris 330 engines to like-new condition

Specs At A Glance

Good To Know

Q: Is this piston kit pre-assembled? A: The piston comes with rings installed but you should verify ring gap and assembly per your engine's specifications.

Q: Are the gaskets included enough for a full top-end rebuild? A: Yes, the kit includes all necessary gaskets for the cylinder head and cylinder base, along with valve cover gasket if applicable.

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