4ES-11311-30 Cylinder Piston Gasket Top End Kit for Yamaha YZ85 2002-2020

Product Overview

This aftermarket replacement top end kit is intended for the listed Yamaha YZ85 applications and includes a cylinder, piston, and gasket set for top end service. A top end kit supplies the components needed when servicing the cylinder, piston, and related sealing surfaces of a two-stroke engine. The kit cross-references part number 4ES-11311-30 for comparison with the corresponding Yamaha reference number.

Key Features & Performance

• Provides the cylinder, piston, and gasket components grouped together for top end service
• Supports the normal function of the cylinder and piston assembly within a two-stroke engine
• Cross-references part number 4ES-11311-30
• Intended for the listed Yamaha YZ85 applications
• A practical option when replacing worn or damaged top end components

Fitment & Compatibility

• for Yamaha YZ85 2002-2020 applications

Common Uses

• Replacing worn, damaged, or malfunctioning cylinder, piston, or gasket components
• Top end service and routine maintenance of the engine
• Restoring normal top end function after the original components have failed

Technical Specifications

• Product Type: Cylinder Piston Gasket Top End Kit
• Part Number: 4ES-11311-30
• Model Application(s): Yamaha YZ85
• General Application: 2002-2020 Yamaha YZ85

Frequently Asked Questions

Q: What does a top end kit do? A: A top end kit groups the cylinder, piston, and gasket components used when servicing the upper section of a two-stroke engine.

Q: How should fitment be verified? A: Compare the complete existing part number and the complete equipment model designation against the numbers and applications shown here 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.