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Engines and Components› Pistons and Piston Rings

Athena

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

$268.95 $209.25 Save $59.70

SKU: A0EF S4C05800001B

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In Stock
Ships by Jun 12
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

Unleash the full potential of your Yamaha YZ125 engine with the Athena S4C05800001B Piston Kit. This big bore piston kit increases displacement to 144cc with a 57.95mm bore and 14:1 compression ratio, providing enhanced power and torque. Crafted from premium materials, it ensures durability and reliability under extreme conditions. The lightweight design improves acceleration and handling, making it an ideal upgrade for racers and enthusiasts seeking superior performance.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandAthena
Part NumberA0EF S4C05800001B

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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