Cylinder Piston Head Gasket Rebuild Kit For Yamaha YZ80 1993-2001 YZ85 2002-2020

Cylinder Piston Head Gasket Rebuild Kit for Yamaha YZ80 and YZ85

This cylinder piston head gasket rebuild kit for Yamaha YZ80 and YZ85 provides the top end components needed to restore compression and power on 1993-2001 YZ80 and 2002-2020 YZ85 machines.

Overview

The Cylinder Piston Head Gasket Rebuild Kit for Yamaha YZ80 and YZ85 covers the main wear parts of a two-stroke top end in a single package. It replaces a scored cylinder, worn piston, and leaking gaskets so the engine holds compression and runs as intended. This rebuild kit serves owners of 1993-2001 YZ80 and 2002-2020 YZ85 bikes handling a full top end service.

Built For Performance

• Cylinder, piston, and head gasket supplied together as a rebuild set
• Covers both the YZ80 and YZ85 platforms across the listed model years
• Gasket set seals the head and cylinder joints to prevent compression loss
• Piston and cylinder sized to the stock small-bore two-stroke configuration
• Components checked for dimensional consistency to support reliable sealing

Fits These Machines

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

On-The-Job Use

• Top end rebuilds after piston wear, scoring, or a drop in compression
• Routine maintenance on motocross and trail ridden small-bore two-strokes
• Bringing a used or stored bike back into running condition
• Pre-season servicing before regular riding begins

Specs At A Glance

Good To Know

Q: Will this kit fit both my YZ80 and YZ85? A: The kit is listed for 1993-2001 YZ80 and 2002-2020 YZ85 models, but bore and stroke differ between the two, so confirm the correct version for your bike before ordering. A: Check your engine number against the listing details to be sure.

Q: What else should I replace during a top end rebuild? A: Inspect the small end bearing, circlips, and any seals your service manual lists, since they are not part of this kit. Replace worn items at the same time to avoid a repeat teardown.

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