Namura Standard Bore Size C Top End Repair Kit for Yamaha YZ125 fits 1997 54mm

Standard Bore Size C Top End Repair Kit for Yamaha

This top end repair kit provides a complete set of components to rebuild the cylinder and piston assembly for Yamaha YZ125 models from 1997, featuring a 54mm bore size.

Overview

This top end repair kit is a complete set of piston, rings, wrist pin, bearings, and gaskets for rebuilding the top end of Yamaha YZ125 engines from 1997. It delivers everything needed to restore compression and performance in a single kit, saving time and ensuring compatibility. Designed for the 54mm standard bore, this repair kit is a direct replacement for worn components.

Built For Performance

• Includes a precision-machined piston matched to the 54mm bore
• Features high-quality rings for optimal sealing and longevity
• Kit includes all necessary gaskets and seals for a complete rebuild
• Engineered to meet OEM specifications for reliable power delivery
• Wrist pin and bearings included for smooth operation

Fits These Machines

• for Yamaha YZ125 (1997)

On-The-Job Use

• Ideal for motocross and off-road racing applications
• Used for rebuilding the top end after extensive riding seasons
• Commonly used in competitive motocross classes
• Suitable for trail riding and recreational use requiring top-end refresh

Specs At A Glance

Good To Know

Q: Is this kit compatible with aftermarket cylinders? A: This kit is designed for standard bore sizes; if your cylinder has been overbored, select the appropriate oversized kit.

Q: Does the kit include a cylinder head gasket? A: Yes, the kit includes all gaskets and seals needed for a complete top end rebuild, including the base gasket and head gasket where applicable.

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