Namura Size B Standard Bore Top End Repair Kit for Yamaha YZ125 2005-2021 54mm

Namura Size B Standard Bore Top End Repair Kit for Yamaha

This Namura Size B Standard Bore Top End Repair Kit for Yamaha provides a complete top end assembly for the YZ125 dirt bike, including a 54mm piston, rings, wrist pin, and bearings to restore engine performance.

Overview

This Namura Size B Standard Bore Top End Repair Kit for Yamaha is a comprehensive top end kit for Yamaha YZ125 motorcycles from 2005 to 2021. The Namura Size B Standard Bore Top End Repair Kit includes a 54mm piston, rings, wrist pin, and bearings for a full top end overhaul. It is designed for riders seeking a reliable replacement for worn components.

Built For Performance

• 54mm standard bore piston for exact fit
• Size B classification ensures proper clearance
• High-quality ring set for optimal sealing
• Includes wrist pin and bearings for complete rebuild
• Durable construction for long service life

Fits These Machines

• for Yamaha YZ125 (2005-2021)

On-The-Job Use

• Motocross racing
• Trail riding
• Enduro competition
• Engine rebuilds and top end maintenance

Specs At A Glance

Good To Know

Q: Does this top end kit include a cylinder? A: No, this is a piston and ring kit only; the cylinder is not included.

Q: What is the difference between Size A and Size B? A: Size B provides a slightly tighter piston-to-cylinder clearance for specific rebuild needs.

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