Vertex Top End Piston Kit 53.94 mm for Honda CR125R (VTK22189B-1)

The Vertex VTK22189B-1 Top End Piston Kit is designed as a reliable cast OE replacement for select Honda CR125R applications. Manufactured from gravity-cast aluminum alloy with 18% silicone content, this piston provides dependable performance and durability for engine rebuilding and top-end service. Its OE-style design supports proper fitment and consistent operation in demanding off-road riding conditions.
The piston features a heat-treated T-5 hardening and tempering cycle to improve strength and wear resistance. A high-tech molybdenum disulfide coating is applied to the piston skirt to help promote faster break-in and extend piston life. This coating supports smoother initial operation while helping reduce friction between the piston and cylinder during the early stages of use.
This complete top-end kit includes the piston, piston rings, wrist pins, circlips, top-end gaskets, and a wrist pin bearing, providing the key components needed for a comprehensive piston replacement. The Vertex VTK22189B-1 kit is intended for riders and technicians seeking dependable replacement parts for restoring Honda CR125R engine performance. Verify motorcycle year and application compatibility before installation.

Features:

• Heat-treated piston: Uses a T-5 hardening and tempering cycle for improved strength and wear resistance

• Molybdenum disulfide skirt coating: Promotes faster break-in and helps increase piston service life

• Gravity-cast aluminum alloy: Constructed with 18% silicone content for dependable OE replacement performance

• Complete top-end kit: Includes piston, rings, wrist pins, circlips, top-end gaskets, and wrist pin bearing

• Application: Designed for select Honda CR125R models

Ships from Parts Unlimited.