Namura Standard Bore Size A Top End Repair Kit for Yamaha YZ125 1998-2000 54mm

Namura Standard Bore Size A Top End Repair Kit for Yamaha

This top end repair kit for Yamaha YZ125 includes a piston, rings, gaskets, and bearings for a 54mm bore, designed for 1998-2000 models to restore compression and power.

Overview

This Namura standard bore size A top end repair kit for Yamaha YZ125 provides all necessary components to rebuild the cylinder top end. It is specifically engineered for 1998-2000 YZ125 models with a 54mm bore, ensuring a precise fit and reliable performance. Ideal for riders needing a complete top end overhaul, this kit replaces worn parts and brings back engine efficiency.

Built For Performance

• Includes a 54mm piston with rings for optimal compression
• Complete gasket set seals the cylinder head and base
• Wrist pin and bearings reduce friction and wear
• Standard bore size A eliminates need for cylinder boring
• Precision-machined components match OEM specifications

Fits These Machines

• for Yamaha YZ125 (1998)
• for Yamaha YZ125 (1999)
• for Yamaha YZ125 (2000)

On-The-Job Use

• Motocross racing on tracks requiring high RPM
• Trail riding and off-road enduro events
• Competitive hare scrambles and cross-country
• General maintenance for high-hour engines
• Rebuilding after piston seizure or ring failure

Specs At A Glance

Good To Know

Q: Does this kit include cylinder head gaskets? A: Yes, the kit contains a full gasket set for the cylinder head and base, along with all necessary seals.

Q: Can I use this kit on a 2001 YZ125? A: No, this kit is specifically designed for YZ125 models from 1998 to 2000 and will not fit later years due to bore and port changes.

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