Namura .040 Over Bore Piston & Gasket Kit for Honda Fourtrax 300 2x4 & 4x4 75mm

Namura .040 Over Bore Piston & Gasket Kit for Honda

This .040 over bore piston and gasket kit rebuilds the top end of your Honda Fourtrax 300 2x4 and 4x4, featuring a 75mm bore size.

Overview

This Namura .040 over bore piston and gasket kit is a complete top-end rebuild solution for Honda Fourtrax 300 models. It includes the piston, rings, and all necessary gaskets to restore compression and power. Designed for 2x4 and 4x4 variants, this kit provides the oversize needed to refresh a worn cylinder.

Built For Performance

• Premium cast piston for reliable performance
• .040 oversize provides proper clearance for re-bored cylinders
• Includes complete gasket set for a leak-free seal
• Precision-machined ring grooves for optimal ring seating

Fits These Machines

• for Honda Fourtrax 300 2x4
• for Honda Fourtrax 300 4x4

On-The-Job Use

• Commonly used during engine rebuilds after cylinder boring
• Suitable for restoring performance on farm or ranch utility ATVs
• Ideal for trail riding applications requiring reliable power
• Used by mechanics for top-end overhauls

Specs At A Glance

Good To Know

Q: Do I need to have my cylinder bored to use this piston? A: Yes, this .040 over piston requires the cylinder to be bored to the matching oversize by a qualified machine shop. Q: Is this kit compatible with both manual and electric start models? A: It fits Honda Fourtrax 300 models regardless of start type, but always verify your engine serial number.

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