Namura Size A Standard Bore Piston Kit for Polaris 850 Scrambler, Sportsman 87mm

Namura Size A Standard Bore Piston Kit for Polaris

This Namura Size A Standard Bore Piston Kit is a replacement piston assembly designed for Polaris 850 Scrambler and Sportsman models, featuring an 87mm bore diameter for reliable engine performance.

Overview

The Namura Size A Standard Bore Piston Kit replaces worn pistons in Polaris 850 Scrambler and Sportsman ATVs, restoring compression and power. This kit includes a high-strength piston and rings, engineered for durability in demanding off-road conditions.

Built For Performance

• Size A standard bore design ensures precise fitment with 87mm cylinder bore
• High-silicone aluminum alloy construction resists thermal expansion and wear
• Precision-machined ring grooves improve ring seal and reduce blow-by
• Reinforced wrist pin boss handles high-stress applications
• Plated piston skirt reduces friction for smoother operation

Fits These Machines

• for Polaris 850 Scrambler
• for Polaris Sportsman 850

On-The-Job Use

• Trail riding and recreational ATV use
• Hunting and utility vehicle applications
• Engine rebuilds requiring OEM-specification pistons

Specs At A Glance

Good To Know

Q: Will this piston kit fit a Polaris Sportsman 850 with a different submodel? A: This kit is designed for standard bore applications; always verify your cylinder bore diameter and engine serial number before ordering.

Q: Does the kit include a piston pin? A: Yes, the piston kit includes the wrist pin and circlips for a complete replacement.

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