1C3-11311-21-00 54mm Cylinder Top End Piston Kit for Yamaha YZ125 2005-2021

Product Overview

This aftermarket replacement cylinder top end piston kit is intended for the listed Yamaha YZ125 2005-2021 applications and cross-references part number 1C3-11311-21-00. A cylinder top end piston kit supplies the piston and top-end components needed when servicing the upper portion of a two-stroke engine cylinder assembly. The 54mm bore size is stated in the title for reference during fitment checks.

Key Features & Performance

• Provides a 54mm bore piston kit for top end service on the listed two-stroke engine applications.
• Cross-references part number 1C3-11311-21-00 for comparison with the existing component.
• Intended for the Yamaha YZ125 2005-2021 range as stated in the title.
• Used when the piston and related top end parts require replacement during engine service.

Fitment & Compatibility

• for Yamaha YZ125 2005-2021 applications

Common Uses

• Replacing a worn top end piston assembly during engine service.
• Servicing the upper cylinder area after the existing piston or related components become damaged.
• Restoring the normal function of the top end assembly after the original piston components have failed.

Technical Specifications

• Product Type: Cylinder top end piston kit
• Part Number: 1C3-11311-21-00
• Bore Size: 54mm
• Model Application(s): Yamaha YZ125 2005-2021
• General Application: Two-stroke top end service

Frequently Asked Questions

Q: What does a cylinder top end piston kit do? A: It provides the piston and top end components used when servicing the upper cylinder assembly of a two-stroke engine.

Q: How should fitment be verified? A: Compare the existing part number with 1C3-11311-21-00 and confirm the complete equipment model designation and bore size before purchase.

This is an aftermarket replacement part and is not represented as genuine or original equipment. Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number, model year, or existing part number. Verify fitment before purchase.