Namura .020 Over Bore Piston Rings for Yamaha 350 4-Stroke ATV's 83.5mm

Piston Rings for Yamaha

These .020 Over Bore Piston Rings for Yamaha 350 4-Stroke ATV's [83.5mm] restore cylinder compression and engine power.

Overview

The .020 Over Bore Piston Rings for Yamaha 350 4-Stroke ATV's [83.5mm] are engineered to seal the combustion chamber in rebored cylinders. These .020 Over Bore Piston Rings for Yamaha 350 4-Stroke ATV's [83.5mm] provide the necessary tension to minimize oil consumption. Engine builders rely on the .020 Over Bore Piston Rings for Yamaha 350 4-Stroke ATV's [83.5mm] for a precise cylinder wall interface.

Built For Performance

• Precision ground for optimal cylinder wall sealing
• High-strength material resists heat and friction
• Engineered for specific .020 over bore requirements
• Provides consistent compression across the RPM range
• Durable finish reduces wear on the piston and cylinder

On-The-Job Use

• Engine top-end rebuilding and restoration
• Correcting oil burning issues due to worn rings
• Restoring lost horsepower in older engines

Specs At A Glance

Good To Know

Q: Are these rings compatible with a stock bore? A: No, these rings are specifically designed for a cylinder that has been bored .020 over.

Q: Should the cylinder be honed before installation? A: Yes, a fresh crosshatch hone is necessary to ensure the new rings seat correctly against the cylinder wall.

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