Namura Standard Bore Piston Kit Size A (53.94mm) for Honda CR125R 2004-2007 54mm

Standard Bore Piston Kit Size A (53.94mm) for Honda

This Namura Standard Bore Piston Kit is a high-performance replacement piston for Honda CR125R engines from 2004 to 2007, featuring a 53.94mm size A bore (nominal 54mm) that delivers consistent compression and enduring performance.

Overview

The Standard Bore Piston Kit by Namura is designed to restore or enhance the power output of your Honda CR125R. This kit includes a precision-machined piston with a 53.94mm size A bore, rings, and pin for a complete top-end rebuild. Riders will appreciate the reliable performance and durability this Standard Bore Piston Kit offers for competitive or recreational riding.

Built For Performance

• Precision-machined from high-silicone aluminum alloy for strength and heat resistance
• Double-bridge forged design reduces weight while maintaining structural integrity
• CNC-machined ring grooves ensure precise ring fit and compression
• Special skirt coating reduces friction and wear during break-in
• Includes wrist pin, circlips, and piston rings

Fits These Machines

• for Honda CR125R 2004-2007

On-The-Job Use

• Commonly used in motocross racing for top-end rebuilds
• Commonly used in off-road trail riding and enduro events
• Restores lost compression and power in older engines
• Suitable for a complete engine overhaul during rebuild projects

Specs At A Glance

Good To Know

Q: What is the difference between Size A and other sizes? A: Size A is the standard bore size with a 53.94mm diameter; oversize options are available for rebored cylinders.

Q: Does this kit include the wrist pin bearing? A: The kit includes the wrist pin and circlips; the wrist pin bearing is typically reused or ordered separately.

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