Namura Standard Bore Piston Kit for Polaris Sportsman 90 2001-2006 Models 52mm

Namura Standard Bore Piston Kit for Polaris Sportsman 90 2001-2006 Models

This Namura Standard Bore Piston Kit for Polaris Sportsman 90 (2001-2006) is a replacement piston assembly designed to restore engine performance, with a 52mm bore size.

Overview

This Namura Standard Bore Piston Kit is a direct replacement for Polaris Sportsman 90 engines from 2001 to 2006. It includes a 52mm piston, rings, and pin to renew compression and power in your youth ATV.

Built For Performance

• 52mm standard bore size for stock engine rebuilds
• Includes piston, rings, and wrist pin for complete replacement
• High-strength aluminum alloy for durability
• Precision machined for exact fitment
• Reduces engine wear and restores lost performance

Fits These Machines

• for Polaris Sportsman 90 (2001-2006)

On-The-Job Use

• Youth ATV trail riding
• Farm and utility light-duty use
• Recreational riding for beginners

Specs At A Glance

Good To Know

Q: Do I need to hone the cylinder before installing this piston? A: Yes, for best results, the cylinder should be honed to the correct crosshatch pattern to seat the new rings properly.

Q: What is the recommended ring gap for this piston? A: Follow the manufacturer’s specification, typically around 0.004-0.006 inches per inch of bore diameter; check the included instructions.

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