Namura .040 Over Bore Piston Rings for Yamaha Most 250 ATV's from 1992-2009 72mm

.040 Over Bore Piston Rings for Yamaha

These .040 over bore piston rings for Yamaha seal the combustion chamber to maintain cylinder pressure for engines bored 72mm.

Overview

The .040 over bore piston rings for Yamaha are essential for engine rebuilds requiring a larger cylinder diameter. By using these .040 over bore piston rings for Yamaha you restore proper compression and oil control. These components are designed for high-endurance engine performance.

Built For Performance

• Precision machined for tight tolerances
• Hardened steel for reduced wear
• Maintains seal at high temperatures
• Optimized ring tension for power
• Compatible with 72mm bore setups

Fits These Machines

• for Yamaha 1992-2009 250 ATV models

Specs At A Glance

Good To Know

Q: Should I gap these rings before installation? A: Yes always verify ring end gap inside the cylinder to ensure correct clearance. Q: Are these rings compatible with stock pistons? A: These are designed for over bore pistons and will not fit standard bore cylinders.

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