Namura .040 Over Piston Rings for Yamaha Raptor 90 & Grizzly 90 2016-2024 48mm

.040 Over Piston Rings for Namura

These .040 over piston rings for Namura restore compression and seal the combustion chamber in high-mileage engines. This set is designed specifically for engines bored to 48mm.

Overview

The .040 over piston rings for Namura provide a precise seal against cylinder walls to prevent oil blow-by and maintain power. These .040 over piston rings for Namura are engineered for durability during engine rebuilds. Technicians select these rings to ensure correct ring end gap and tension in refurbished cylinders.

Built For Performance

• Precision manufactured for accurate bore fitment
• High-grade alloy construction for heat resistance
• Standardized ring tension for optimal sealing
• Consistent thickness for uniform cylinder wall contact

Fits These Machines

• for Yamaha Raptor 90
• for Yamaha Grizzly 90

On-The-Job Use

• Restoring engine compression during top-end rebuilds
• Repairing power loss caused by worn ring sets
• Maintaining cylinder integrity after bore service

Specs At A Glance

Good To Know

Q: Do these rings require gap filing? A: Always verify ring end gap with a feeler gauge before installation to meet manufacturer specifications.

Q: Does this set include oil rings? A: This kit contains the specific compression rings required for the .040 overbore assembly.

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