What is the purpose of power exhaust valves?

Power exhaust valves help manage the engine's exhaust port timing. They can improve low-end torque and throttle response without sacrificing high-RPM power, giving you a broader powerband.

What materials are used in this replacement valve?

The cylinder is made of aluminum with a galvanic coating, and the piston is forged with a molybdenum coating. These materials are chosen for durability and resistance to wear in the engine environment.

Does this part come with all necessary hardware for installation?

This product includes the aluminum cylinder and forged piston. It is recommended to refer to the manufacturer's installation instructions for any additional hardware or components that may be needed.

Athena

Athena 05-21 Yamaha YZ 125 LC Factory 125cc 54mm Replacement Power Exhaust Valves

Name: Athena 05-21 Yamaha YZ 125 LC Factory 125cc 54mm Replacement Power Exhaust Valves
Brand: Athena
Price: 226.65 USD
Availability: InStock

$226.65

Fits 2005-2021 Yamaha YZ125. Athena replacement power exhaust valves for your 125cc engine. Restores factory performance.

Key Features

Direct fit — verified for 2005-2021 Yamaha YZ125
Aluminum cylinder with galvanic coating — resists corrosion
Forged piston with molybdenum coating — built for durability
Restores factory power valve function — maintains engine performance

Fits this vehicle

Yamaha YZ125 2005-2021

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Product Details

You get aluminum cylinder with galvanic coating and a forged piston with molybdenum coating in this Athena replacement power exhaust valve assembly. This part is designed to replace the factory exhaust power valves on your 2005-2021 Yamaha YZ125, helping to restore its original performance.