Vertex Top End Piston Kit 53.94 mm for Yamaha YZ125 (VTK22806B)

Restore reliable top-end performance with the Vertex VTK22806B Top End Piston Kit, designed as a cast original-equipment replacement for Yamaha YZ125 applications. This complete kit includes the essential components needed for a piston replacement, helping simplify top-end service and supporting dependable engine operation. The piston is manufactured from gravity-cast aluminum alloy with 18% silicon content for a balance of strength, durability, and consistent performance.
The piston receives a T-5 hardening and tempering cycle to improve material properties and durability under demanding engine conditions. Its skirt features a high-tech molybdenum disulfide coating that helps reduce friction during initial operation, promotes faster break-in, and supports extended piston life. This coating is suited for riders and technicians seeking dependable replacement components for regular maintenance or engine rebuilding.
The Vertex VTK22806B kit includes the piston, piston rings, wrist pins, circlips, top-end gaskets, and a wrist pin bearing. Each component is selected to support a complete top-end installation, reducing the need to source individual parts separately. Verify the application and engine specifications before installation to ensure proper fitment for your Yamaha YZ125.
Built for practical service and consistent results, this Vertex cast piston kit is a suitable choice for replacing worn top-end components while maintaining factory-style engine functionality.

Features:

• Brand: Vertex

• Part Number: VTK22806B

• Application: Yamaha YZ125

• Piston Type: Cast original-equipment replacement

• Piston Material: Gravity-cast aluminum alloy with 18% silicon content

• Heat Treatment: T-5 hardening and tempering cycle

• Piston Skirt Coating: Molybdenum disulfide coating for reduced friction and faster break-in

• Kit Contents: Piston, rings, wrist pin, circlips, top-end gaskets, and wrist pin bearing

Ships from Parts Unlimited.