What is the bore size of this piston?

This Athena piston has a bore size of 57.95mm. This is the standard diameter for the specified Yamaha YZ125 models.

What coatings are on the piston and cylinder?

The piston features a molybdenum coating, which helps reduce friction during operation. The included aluminum cylinder has a galvanic coating for added durability.

Can this piston be shipped to California?

No, this piston is not CARB approved and cannot be shipped to California due to emissions regulations.

Athena

Athena 97-21 Yamaha YZ 125 57.95mm 2T Cast Piston

Name: Athena 97-21 Yamaha YZ 125 57.95mm 2T Cast Piston
Brand: Athena
Price: 223.77 USD
Availability: InStock

$223.77

Fits 1997-2021 Yamaha YZ125. This Athena cast piston is 57.95mm and built for 2-stroke engines.

Key Features

Direct fit — verified for 1997-2021 Yamaha YZ125
57.95mm bore size — standard replacement diameter
Cast aluminum piston — lightweight and durable for 2-stroke engines
Molybdenum coating on piston — helps reduce friction
Galvanic coating on cylinder — aids in durability

Fits this vehicle

Yamaha YZ125 1997-2021

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Product Details

Athena makes this 57.95mm 2-stroke cast piston for the 1997-2021 Yamaha YZ125. This piston is a direct replacement part designed to restore your engine's performance.

The kit includes an aluminum cylinder with a galvanic coating and a forged piston that has a molybdenum coating. This combination helps with durability and smooth operation.