Namura .040 Over Bore Piston & Top Gasket Kit for Yamaha 350 4-Stroke ATVs 84mm

.040 Over Bore Piston & Top Gasket Kit for Yamaha

This .040 over bore piston and top gasket kit is designed for Yamaha 350 4-stroke ATVs, providing the necessary components to restore engine performance after a cylinder bore. The kit includes an 84mm oversize piston and a matching top gasket set, offering a direct replacement for worn-out parts.

Overview

This .040 over bore piston and top gasket kit is a high-quality replacement for Yamaha 350 4-stroke ATV engines needing a rebuild. It includes an 84mm oversize piston and gaskets to ensure proper sealing after boring the cylinder, making it ideal for restoring compression and power.

Built For Performance

• Precision-machined piston at .040-inch oversize for restored cylinder clearance
• Includes top gasket set for reliable sealing
• 84mm bore diameter matches Yamaha 350 4-stroke ATV specifications
• Designed for 4-stroke engines requiring a rebuild

Specs At A Glance

Good To Know

Q: Is this piston kit complete with ring? A: This kit includes the piston and top gasket set; piston rings are typically included but verify with manufacturer if not listed separately.

Q: Can this be used with a standard bore cylinder? A: No, this .040 over bore piston requires the cylinder to be bored to 84mm to match the oversize.

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