Namura .020 Over Bore Piston & Gasket Kit for Honda Fourtrax 300 2x4 4x4 74.5mm

.020 Over Bore Piston & Gasket Kit for Honda Fourtrax 300

This .020 over bore piston and gasket kit is a complete top-end rebuild set for Honda Fourtrax 300 2x4 and 4x4 models, featuring a 74.5mm piston and all necessary gaskets for a fresh bore and piston replacement.

Overview

This .020 over bore piston and gasket kit is designed for Honda Fourtrax 300 models, providing a 74.5mm piston ( .020 oversize) along with the complete gasket set needed for a top-end rebuild. It includes piston rings, wrist pin, and circlips, as well as head, base, and cylinder gaskets. This piston and gasket kit is the go-to solution for restoring compression and performance in a worn Fourtrax 300 engine.

Built For Performance

• Includes .020 over bore piston (74.5mm) with rings, wrist pin, and circlips
• Complete gasket set covers cylinder head, base, and valve cover seals
• Piston is cast from high-strength aluminum alloy for durability
• Precision-machined to exact oversize specification for a proper cylinder fit
• Kit includes all hardware needed for a straightforward top-end installation

Fits These Machines

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

On-The-Job Use

• Top-end overhaul on Honda Fourtrax 300 ATVs
• Rebuilding engine after cylinder wear or loss of compression
• Performance restoration for farm, trail, or utility use
• Replacing worn pistons to restore power and reduce oil consumption
• Boring cylinder to .020 over to match new oversized piston

Specs At A Glance

Good To Know

Q: Does this kit include the piston rings and wrist pin? A: Yes, the kit comes complete with piston rings, wrist pin, and circlips for the piston, plus all gaskets for the top end.

Q: Is the cylinder bore required to be machined to .020 over? A: Yes, this piston is .020 oversize and requires the cylinder to be bored to 74.5mm for proper clearance and operation.

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