Namura Stock Bore Piston Rings for Yamaha 400 Kodiak & Grizzly 2000-2008 84.5mm

Stock Bore Piston Rings for Yamaha

These stock bore piston rings for Yamaha provide a tight seal between the piston and cylinder wall to maximize combustion pressure.

Overview

These stock bore piston rings for Yamaha are designed to restore engine power and reduce oil consumption in 400 Kodiak and Grizzly models. Featuring a precision 84.5mm diameter, these stock bore piston rings for Yamaha help eliminate blow-by and maintain compression. These rings are intended for use with stock-spec cylinder bores.

Built For Performance

• High-tensile material for consistent ring tension
• Precision gap sizing for heat expansion
• Hard-chrome plating to minimize friction
• Excellent oil control properties

Fits These Machines

• for Yamaha Kodiak 400 2000-2008
• for Yamaha Grizzly 400 2000-2008

On-The-Job Use

• Restoring engine compression during a top-end rebuild
• Reducing blue exhaust smoke caused by worn rings
• Maintaining engine health during long-term service

Specs At A Glance

Good To Know

Q: Are these rings compatible with non-stock pistons? A: These rings are specified for 84.5mm stock bore configurations and may not fit aftermarket oversized pistons.

Q: Is a ring compressor tool needed for installation? A: A ring compressor tool is necessary to seat the piston into the cylinder without breaking the rings.

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