Cylinder Piston Gasket Top End Kit Fit for Yamaha 2002-2018 YZ85 1993-14 YZ80

Cylinder Piston Gasket Top End Kit for Yamaha

This cylinder piston gasket top end kit provides the essential engine components, including a new cylinder, piston assembly, and high-performance gaskets, to restore compression and power to compatible off-road motorcycles.

Overview

This cylinder piston gasket top end kit delivers everything required to rebuild the upper portion of compatible motorcycle engines. By renewing the compression chamber, this cylinder piston gasket top end kit restores lost horsepower and throttle response. Off-road riders seeking to revitalize machine performance can rely on this cylinder piston gasket top end kit for a complete top-end overhaul.

Built For Performance

• Precision-cast aluminum cylinder features a durable bore lining for reduced friction.
• Cast piston is engineered with high silicone content for superior thermal resistance.
• Premium multi-piece gasket set provides a reliable, leak-free combustion seal.
• Complete kit includes wrist pin, rings, and circlips for a comprehensive install.

Fits These Machines

• for Yamaha YZ80 1993 to 2014
• for Yamaha YZ85 2002 to 2018

On-The-Job Use

• Rebuilding a worn two-stroke engine to restore factory-level compression.
• Replacing a seized piston and damaged cylinder wall after an engine lean-out.
• Performing routine top-end maintenance during the off-season to ensure reliability.

Specs At A Glance

Good To Know

Q: Is a break-in period required for the new cylinder and piston? A: Yes, a proper heat-cycle process and moderate riding for the first few hours are highly recommended to seat the piston rings.

Q: What fuel mixture should be used after installing this kit? A: Follow the manufacturer specification for the specific machine model to ensure proper lubrication of the new components.

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