Namura .020 Over Bore Piston Kit for Yamaha Kodiak & Grizzly 400 2000-2008 85mm

Namura .020 Over Bore Piston Kit for Yamaha Kodiak & Grizzly 400 (2000-2008, 85mm)

This Namura .020 over bore piston kit provides a direct replacement for the original piston in Yamaha Kodiak and Grizzly 400 ATVs from 2000 to 2008, featuring an 85mm bore size for engine restoration.

Overview

Designed for Yamaha Kodiak and Grizzly 400 engines, this Namura .020 over bore piston kit restores compression and performance after cylinder wear. The 85mm piston with .020 over sizing ensures a precise fit for engines requiring oversize repair. Ideal for ATV owners performing a top-end rebuild or overhaul.

Built For Performance

• Precision-machined from high-strength aluminum alloy for durability
• .020 over bore size accommodates cylinder wear
• Includes piston rings and wrist pin for complete installation
• Designed to match OEM specifications for Yamaha Kodiak and Grizzly 400
• Heat-treated for improved wear resistance

Fits These Machines

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

Specs At A Glance

Good To Know

Q: Is this piston kit compatible with standard bore cylinders? A: No, this is a .020 over bore piston and requires the cylinder to be bored to match the 85mm piston size.

Q: Does the kit include a piston pin? A: Yes, this kit includes the piston pin and rings for a complete installation.

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