Namura .010 Over Piston Kit for Yamaha Big Bear 400 & 1993-1999 Kodiak 83.25mm

.010 Over Piston Kit 83.25mm for Yamaha Big Bear 400 & Kodiak

This .010 over piston kit at 83.25mm is a direct replacement piston for Yamaha Big Bear 400 and 1993-1999 Kodiak ATVs, providing a reliable rebuild solution for worn engines.

Overview

This .010 over piston kit from Namura is designed for Yamaha Big Bear 400 and Kodiak models, offering a high-quality replacement that restores engine compression and performance. The 83.25mm bore size accommodates cylinder wear, making it ideal for engine overhauls on these popular ATVs.

Built For Performance

• Oversized .010 over factory spec for worn cylinders
• Precision-machined 83.25mm diameter piston
• Includes piston rings and wrist pin for complete installation
• High-strength aluminum alloy construction for durability
• Designed to match OEM specifications for reliable fit

Fits These Machines

• for Yamaha Big Bear 400
• for Yamaha Kodiak 1993-1999

On-The-Job Use

• Engine rebuilds on Yamaha Big Bear 400 ATVs
• Replacing worn pistons in Kodiak models from 1993-1999
• Restoring performance in high-mileage utility ATVs
• Off-road and farm applications requiring reliable power

Specs At A Glance

Good To Know

Q: Does this piston kit include all necessary rings? A: Yes, the kit comes with piston rings and a wrist pin, though you should reuse your original clips if applicable.

Q: Can I use this on a standard bore cylinder? A: This is .010 over size, so it requires a cylinder that has been bored or honed to 83.25mm; it will not fit a standard bore cylinder.

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