54mm Cylinder Piston Top End Rebuild Set Fit For Yamaha YZ125 YZ 125 2005-2021

54mm Cylinder Piston Top End Rebuild Set for Yamaha YZ125

This 54mm cylinder piston top end rebuild set is a complete replacement kit for the Yamaha YZ125, restoring compression by renewing the piston, rings, cylinder, and related top end components. The set contains the parts needed to carry out a top end rebuild on compatible Yamaha YZ125 machines from 2005 through 2021. Riders and mechanics choosing a cylinder piston top end rebuild set for Yamaha YZ125 get a direct-fit package built to factory dimensions.

Overview

This 54mm cylinder piston top end rebuild set for Yamaha YZ125 bundles the cylinder, piston, rings, and associated components required to refresh the upper engine. It replaces worn top end parts to help restore compression and reliable running. The kit suits riders and mechanics performing routine top end service on 2005 through 2021 YZ125 models.

Built For Performance

• 54mm bore size matches the stock YZ125 top end dimensions
• Cylinder, piston, and rings supplied as one coordinated set
• Gaskets and small hardware included to complete the rebuild
• Machined surfaces designed for sealing and heat transfer
• Built to withstand the heat and RPM of a two-stroke motocross engine
• Direct replacement fitment for the listed YZ125 model years

Fits These Machines

• for Yamaha YZ125 2005
• for Yamaha YZ125 2006
• for Yamaha YZ125 2007
• for Yamaha YZ125 2008
• for Yamaha YZ125 2009
• for Yamaha YZ125 2010 through 2021

On-The-Job Use

• Routine top end service on a two-stroke motocross bike
• Restoring compression after piston and ring wear
• Rebuilding an engine during a full refresh
• Motocross and trail riding maintenance

Specs At A Glance

Good To Know

Q: Does this kit include gaskets? A: The set is supplied as a complete rebuild package for the Yamaha YZ125 top end, including the gaskets needed for reassembly. Confirm the exact contents against your parts list before ordering.

Q: Will this fit my YZ125? A: It is listed for Yamaha YZ125 models from 2005 through 2021 with a 54mm bore. Verify your model year and bore size before installation.

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