Namura Standard Bore Piston & Gasket Kit for Yamaha Big Bear 350 2x4 & 4x4 83mm

Namura Standard Bore Piston & Gasket Kit for Yamaha Big Bear 350

This aftermarket piston and gasket kit replaces the stock piston assembly for Yamaha Big Bear 350 2x4 and 4x4 ATVs, restoring compression and performance.

Overview

The Namura Standard Bore Piston & Gasket Kit is a direct replacement for the original piston and gasket set on Yamaha Big Bear 350 models. This kit includes a piston, rings, wrist pin, circlips, and a full gasket set for a complete top-end rebuild. It is designed for riders who need a reliable, cost-effective solution to refresh their ATV's engine.

Built For Performance

• Standard 83mm bore matches OEM specifications for precise fit
• High-strength aluminum alloy piston reduces weight and improves durability
• Ring set engineered for optimal compression and oil control
• Complete gasket set includes all necessary seals for a secure reassembly
• Precision-machined wrist pin and circlips for trouble-free installation

Fits These Machines

• for Yamaha Big Bear 350 2x4
• for Yamaha Big Bear 350 4x4

On-The-Job Use

• Trail riding and recreational ATV use
• Farm and ranch utility work
• Hunting and outdoor exploration
• Engine rebuilds for worn or damaged pistons
• General maintenance and performance restoration

Specs At A Glance

Good To Know

Q: Will this kit work with a Big Bear 350 that has been bored oversize? A: No, this kit is for standard 83mm bore only; if your cylinder has been overbored, you need a corresponding overbore piston kit.

Q: Does this gasket set include a base gasket and head gasket? A: Yes, the gasket set contains all necessary engine gaskets including the base gasket, head gasket, and valve cover gasket where applicable.

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