Namura .020 Over Bore Piston Kit for Kymco 2005-2010 300 MXU, Maxxer 73.2mm

.020 Over Bore Piston Kit for Kymco

This .020 over bore piston kit from Namura is a direct replacement piston assembly designed for Kymco 300 MXU and Maxxer models from 2005 to 2010, featuring a 73.2mm bore size to restore compression and performance after cylinder wear.

Overview

This Namura .020 over bore piston kit provides a complete piston, rings, and pin for Kymco 300 MXU and Maxxer ATVs. It is engineered to match factory specifications while offering an oversized bore to refresh worn cylinders. Ideal for rebuilding the top end of your 300cc Kymco engine.

Built For Performance

• High-strength cast aluminum piston with precision-machined ring grooves
• Includes premium piston rings for optimal seal and reduced blow-by
• Hardened wrist pin and circlips included for easy installation
• 0.020 inch overbore size compensates for cylinder wear
• 73.2mm bore diameter matches factory clearance specifications

Fits These Machines

• for Kymco 300 MXU (2005-2010)
• for Kymco 300 Maxxer (2005-2010)

Specs At A Glance

Good To Know

Q: Do I need to hone the cylinder before installing this piston kit? A: Yes, honing the cylinder to the proper crosshatch pattern is recommended to ensure ring seating and maximum performance.

Q: Can this kit be used with a stock cylinder? A: Yes, the 0.020 overbore size is designed for cylinders that have been bored or honed to that dimension; verify your cylinder's current bore before ordering.

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