Namura .040 Over Bore Piston Rings for Yamaha YFZ50 fits 2017-2026 40mm

.040 Over Bore Piston Rings for for Yamaha

These .040 over bore piston rings provide excellent sealing for for Yamaha YFZ50 engines that have been bored to a 40mm diameter.

Overview

These .040 over bore piston rings are designed to restore engine power and compression. Installing .040 over bore piston rings is a standard procedure when performing a cylinder bore to ensure optimal clearance. These .040 over bore piston rings are manufactured for durability in demanding operating conditions.

Built For Performance

• Resilient material composition
• Precision dimensions for 40mm bores
• Excellent heat transfer properties
• Durable finish to reduce friction
• Strict quality control on gap tolerances

Fits These Machines

• for Yamaha YFZ50 2017-2026

On-The-Job Use

• Top end rebuilds
• Bored cylinder servicing
• Restoring lost compression

Specs At A Glance

Good To Know

Q: How do I ensure correct ring orientation? A: Always look for identifying marks on the ring face, which should face toward the top of the piston.

Q: Can I reuse the old rings? A: Rings should never be reused as they have already worn into the previous cylinder surface.

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