Top End Rebuild Kit for Yamaha YZ80 1993-01& YZ85 2002-20 Cylinder Piston Gasket

Top End Rebuild Kit for Yamaha YZ80 and YZ85

This top end rebuild kit includes the cylinder, piston, and gasket components needed to refresh the top end of a Yamaha YZ80 or YZ85 two-stroke engine.

Overview

This top end rebuild kit covers the cylinder, piston, and gasket set required to restore compression on a Yamaha YZ80 or YZ85. It suits riders rebuilding a worn or seized top end, whether for a race season refresh or a full engine repair. The kit bundles the matched components so the job can be done in one pass.

Built For Performance

• Includes cylinder, piston, and gasket set in one package
• Components sized to work together for a matched top end
• Suitable for a standard rebuild after wear or seizure
• Gaskets included to reseal the cylinder and head surfaces
• Fits the two-stroke YZ80 and YZ85 engine platform

Fits These Machines

• for Yamaha YZ80 1993 through 2001
• for Yamaha YZ85 2002 through 2020

On-The-Job Use

• Refreshing the top end before a race season
• Repairing a seized or low-compression engine
• Restoring a used YZ80 or YZ85 for trail and track riding
• Routine maintenance on a two-stroke motocross bike

Specs At A Glance

Good To Know

Q: Does this kit include the piston ring and pin? A: Kits of this type typically include the piston assembly with ring, pin, and clips along with the gasket set. Verify the exact contents listed by the seller before ordering.

Q: Is this a bolt-on replacement? A: It fits the listed YZ80 and YZ85 models, but checking bore size, stroke, and serial number before install is recommended. Any machining needed should be confirmed with a mechanic.

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