Namura .060 Over Bore Piston Kit for Honda TRX300EX & TRX300X 1993-2009 75.5mm

Namura .060 Over Bore Piston Kit for Honda

The Namura .060 Over Bore Piston Kit is a direct replacement piston assembly designed to restore compression and performance in Honda TRX300EX and TRX300X models from 1993 to 2009, using a 75.5mm overbore to refresh worn cylinders.

Overview

This Namura .060 Over Bore Piston Kit is specifically engineered for Honda TRX300EX and TRX300X engines from 1993-2009. It provides a precise 75.5mm bore diameter to restore lost compression and horsepower. Riders rebuilding their ATV engines will find this Namura .060 Over Bore Piston Kit a reliable and cost-effective solution.

Built For Performance

• Manufactured from high-strength aluminum alloy for durability
• Precision-machined 75.5mm bore diameter for exact fitment
• Includes piston rings and wrist pin for complete assembly
• Engineered to withstand high RPM operation
• Provides consistent compression and power output

Fits These Machines

• for Honda TRX300EX (1993-2009)
• for Honda TRX300X (1993-2009)

On-The-Job Use

• Commonly used in trail riding and recreational ATV applications
• Ideal for restoring worn engines to like-new performance
• Appropriate for competitive racing or aggressive riding
• Suitable for rebuilds on older Honda 300cc four-stroke engines

Specs At A Glance

Good To Know

Q: Will this piston kit work with my original cylinder? A: This is a .060 over bore piston, so your cylinder must be bored to 75.5mm to match. Confirm your current bore size before ordering.

Q: Does the kit include a pin and circlips? A: Yes, the kit comes with a wrist pin and rings, though circlips may need to be reused or sourced separately—check the product listing for exact contents.

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