Namura Standard Bore Piston Kit for Polaris ACE 150 fits 2017-2021 Models 57.4mm

Namura Standard Bore Piston Kit for Polaris ACE 150

This Namura standard bore piston kit fits Polaris ACE 150 models from 2017 to 2021, designed for a 57.4mm cylinder bore.

Overview

The Namura Standard Bore Piston Kit for Polaris ACE 150 is a replacement piston assembly for 2017-2021 models. It includes the piston, rings, wrist pin, and circlips for a complete top-end rebuild. This piston kit is manufactured to standard bore dimensions of 57.4mm.

Built For Performance

• High-silicone aluminum casting for reduced expansion
• Precisely machined ring grooves for proper seal
• Includes moly-coated rings for reduced friction
• Wrist pin and circlips included for complete installation
• Balanced to OEM weight specifications

Fits These Machines

• for Polaris ACE 150 (2017-2021)

On-The-Job Use

• Used during engine rebuilds on Polaris ACE 150 ATVs
• Ideal for restoring compression and power
• Commonly required after cylinder wear or piston damage
• Suitable for recreational riding and trail use

Specs At A Glance

Good To Know

Q: Do I need to hone the cylinder before installing this piston? A: Yes, it is recommended to hone the cylinder to the proper finish for new ring seating.

Q: Is the ring gap pre-set? A: The rings are not pre-gapped; you must check and adjust end gap according to manufacturer specifications.

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