Namura .040 Over Bore Top End Rebuild Kit for Honda CR125R fits 2003 55mm

Namura .040 Over Bore Top End Rebuild Kit for Honda CR125R

This top end rebuild kit from Namura restores compression and performance in a 2003 Honda CR125R with a .040 over bore and 55mm piston.

Overview

The Namura .040 Over Bore Top End Rebuild Kit provides all necessary components to refresh the cylinder and piston assembly for the 2003 Honda CR125R. Designed as a direct-fit top end rebuild kit, it includes a 55mm piston, rings, pin, and gaskets to bring the dirt bike's top end back to life. This kit is an ideal solution for riders seeking reliable power restoration without breaking the bank.

Built For Performance

• .040 over bore piston increases displacement for added power
• High-quality 55mm piston with precision-machined rings for optimal sealing
• Includes wrist pin and circlips for secure installation
• Complete gasket set ensures a leak-free assembly
• Designed to meet OEM specifications for reliable performance
• Durable construction withstands high RPM and heat cycles

Fits These Machines

• for Honda CR125R (2003)

On-The-Job Use

• Ideal for motocross and off-road racing applications
• Suitable for rebuilding top end during routine maintenance
• Works well in aggressive trail riding conditions
• Provides necessary components for a complete top end overhaul

Specs At A Glance

Good To Know

Q: Do I need any additional parts? A: This kit includes the piston, rings, pin, circlips, and gaskets, but you may need to purchase a new cylinder if the bore is damaged.

Q: Is this kit compatible with a stock cylinder? A: Yes, it is designed for use with a cylinder that has been bored .040 over to match the 55mm piston.

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