Namura Standard Bore Piston Kit for Yamaha Kodiak & Grizzly 400 2000-2008 84.5mm

Namura Standard Bore Piston Kit for Yamaha

This Namura Standard Bore Piston Kit is a direct replacement piston assembly for Yamaha Kodiak and Grizzly 400 models from 2000 to 2008, featuring an 84.5mm bore diameter.

Overview

The Namura Standard Bore Piston Kit restores compression and performance in Yamaha Kodiak and Grizzly 400 engines from 2000-2008. It includes a precision-cast piston and rings, engineered for reliable power delivery in utility and recreational ATV applications.

Built For Performance

• 84.5mm standard bore piston for exact OEM specification
• High-strength aluminum alloy withstands high temperatures and stress
• Precision ring grooves ensure optimal ring sealing and longevity
• Hardened wrist pin reduces wear and extends component life
• Low-friction skirt coating minimizes scuffing during break-in

Fits These Machines

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

On-The-Job Use

• Farm and ranch utility tasks
• Trail riding and off-road recreation
• Engine overhauls needing standard bore pistons

Specs At A Glance

Good To Know

Q: Will this piston fit a Yamaha Kodiak 450? A: This kit is specifically designed for the 400cc models; the 450 uses a different bore size, so measure your cylinder before ordering.

Q: Do I need to replace the rings with this piston? A: The kit includes new rings, which should be installed to ensure proper seal and performance.

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