2 Sets of Namura .020 Over Bore Piston Rings for Polaris 850 ATV's 87.5mm

2 Sets of Namura .020 Over Bore Piston Rings for Polaris

These two sets of Namura .020 over bore piston rings for Polaris 850 ATV's 87.5mm provide a durable seal for 87.5mm bore engines.

Overview

The 2 Sets of Namura .020 Over Bore Piston Rings for Polaris are replacement rings for 850cc ATV engines. They are .020 over standard size, suitable for re-bored cylinders. These rings are designed for Polaris 850 ATV models with an 87.5mm bore.

Built For Performance

• Made from high-strength steel alloy
• .020 over bore size 87.5mm
• Includes two complete sets
• Precision ground for proper ring gap
• Compatible with Namura pistons

Fits These Machines

• for Polaris 850 ATV (87.5mm bore)

On-The-Job Use

• Engine rebuild and top-end overhaul
• Replacement for worn or broken rings
• Performance engine restoration

Specs At A Glance

Good To Know

Q: Are these rings for overbore? A: Yes, they are .020 over standard bore, designed for re-bored cylinders.

Q: Do I need to gap them? A: Yes, final gapping should be checked and adjusted according to engine specs.

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