For 2005-2021 Yamaha YZ125 Top End Rebuild Kit 54mm Cylinder Piston Gasket New

Top End Rebuild Kit 54mm Cylinder Piston Gasket for Yamaha YZ125

This 54mm top end rebuild kit provides the cylinder, piston, and gasket parts to refresh 2005-2021 Yamaha YZ125 engines.

Overview

This top end rebuild kit with a 54mm cylinder, piston, and gaskets services the upper engine of 2005-2021 Yamaha YZ125 models. The 54mm bore sizing keeps the rebuild matched to the stock displacement. It is aimed at riders and shops completing routine top end work.

Built For Performance

• 54mm cylinder bore sizing
• Piston matched to the 54mm cylinder
• Gasket set included for top end assembly
• Components bundled for 2005-2021 Yamaha YZ125
• Kit packaging reduces separate part sourcing

Fits These Machines

• for Yamaha YZ125 2005
• for Yamaha YZ125 2006-2010
• for Yamaha YZ125 2011-2015
• for Yamaha YZ125 2016-2021

On-The-Job Use

• Upper engine refresh on a used YZ125
• Compression recovery after piston wear
• Race prep and seasonal maintenance
• Shop rebuilds needing matched top end parts

Specs At A Glance

Good To Know

Q: Does the 54mm bore match the stock YZ125 cylinder? A: The 54mm sizing corresponds to the standard YZ125 top end bore for the listed years. Verify your machine's current bore before installing.

Q: Is a gasket set included with the cylinder and piston? A: Gaskets are bundled with the cylinder and piston in this top end kit. Check the listing contents against your engine before assembly.

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