Namura .060 Over Piston Kit for Polaris 325 Magnum Trail Boss Xpedition 79.5mm

Namura .060 Over Piston Kit for Polaris

This .060 over piston kit rebuilds your Polaris 325 Magnum, Trail Boss, or Xpedition engine with a 79.5mm bore size to restore lost compression and power. The kit includes piston, rings, wrist pin, and circlips for a complete piston replacement.

Overview

The Namura .060 Over Piston Kit is designed for Polaris ATVs needing a rebore after cylinder wear. This 79.5mm overbore piston kit brings your 325cc engine back to life. Mechanics and DIY owners use this piston kit to refresh top-end performance without replacing the entire cylinder.

Built For Performance

• Cast aluminum piston with .060 inch oversize
• Includes premium chrome-plated rings for reduced drag
• Heat-treated wrist pin for durability
• Precision-machined pin bore for proper clearance
• Complete kit with circlips for secure retention

Fits These Machines

• for Polaris 325 Magnum
• for Polaris Trail Boss
• for Polaris Xpedition

On-The-Job Use

• ATV trail riding engine overhaul
• Utility vehicle top-end rebuild
• Farm or ranch equipment maintenance
• Recreational off-road restoration

Specs At A Glance

Good To Know

Q: Do I need to hone the cylinder before installing this kit? A: Yes, the cylinder must be bored and honed to the proper 79.5mm finish to match this .060 over piston for correct clearance.

Q: Does this piston kit come with installation instructions? A: No printed instructions are included; refer to your Polaris service manual for proper installation, ring gap, and torque specs.

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