Namura Piston Rings fits Kawasaki Ultra 150 & 1200 STX-R .020 Over Bore 80.5mm

.020 Over Bore Piston Rings for Namura

These .020 over bore piston rings for Namura provide an effective seal for restored cylinder walls in Kawasaki Ultra 150 and 1200 STX-R watercraft. These piston rings for Namura are manufactured to meet the rigorous demands of high-performance marine engines.

Overview

The .020 over bore piston rings for Namura function by creating a tight barrier between the piston and the 80.5mm cylinder wall. Utilizing these piston rings for Namura helps maintain engine compression ratios after a professional boring service has been performed. This set is designed for reliable operation in marine environments.

Built For Performance

• Specifically sized for 80.5mm cylinder bores
• Durable alloy construction for consistent seal
• Heat treated to maintain tension under load
• Engineered for rapid seating during break-in
• Corrosion resistant coating for marine longevity

Fits These Machines

• for Kawasaki Ultra 150
• for Kawasaki 1200 STX-R

On-The-Job Use

• Cylinder wall rejuvenation in marine engines
• Maintenance on worn 1200cc power plants
• Rebuilding engines to factory compression specs

Specs At A Glance

Good To Know

Q: Are these rings compatible with OEM pistons? A: These rings are designed for compatibility with specific piston profiles, so check that your piston architecture matches the requirements.

Q: How does the .020 oversize affect performance? A: The oversize restores the cylinder geometry to a clean surface, which allows the rings to seat properly and regain engine power.

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