Namura Standard Bore Cylinder & Top End Kit for Polaris ACE 900 2017 2018 2019

Namura Standard Bore Cylinder & Top End Kit for Polaris

The Namura Standard Bore Cylinder & Top End Kit is a complete replacement top end assembly designed to restore compression and power on the Polaris ACE 900 engine.

Overview

This kit includes a standard bore cylinder, piston, rings, wrist pin, and gaskets for a direct-fit rebuild on the Polaris ACE 900 models from 2017 to 2019. It replaces worn top end components to bring back reliable performance and extend engine life. The Namura Standard Bore Cylinder & Top End Kit is a cost-effective alternative to dealer parts while maintaining strict tolerances for your ACE 900.

Built For Performance

• Precision-machined cylinder bore for consistent ring seal
• Forged piston offers increased strength and heat dissipation
• Includes all necessary gaskets for a complete installation
• Designed to match OEM specifications for reliable fitment
• Durable cast iron cylinder sleeve for long service life

Fits These Machines

• for Polaris ACE 900 (2017)
• for Polaris ACE 900 (2018)
• for Polaris ACE 900 (2019)

On-The-Job Use

• Trail riding on rugged terrain
• Utility work requiring constant engine operation
• Hunting and outdoor recreation in remote areas
• Maintenance rebuilds for high-hour machines

Specs At A Glance

Good To Know

Q: Is this kit a direct bolt-on? A: Yes, the Namura Standard Bore Cylinder & Top End Kit is designed as a direct replacement for the factory top end on Polaris ACE 900 models from 2017-2019 with no modifications needed.

Q: What do I need to reuse from my engine? A: You can reuse the cylinder head, camshaft, and valve train components, but we recommend replacing head gaskets and checking valve clearance during installation.

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