Engines and Components› Pistons and Piston Rings
Athena
Athena 05-21 Yamaha YZ 125 2T Forged Racing Piston Bore 53.95mm for OE Cylinder
SKU: A0EF S4F05400017A
Beginner — under 30 min
Description
Fitment
Fitment Guaranteed
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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
| Brand | Athena |
| Part Number | A0EF S4F05400017A |
Videos
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YAMAHA YZ 125 | ATHENA CYLINDER ASSEMBLY | RAW VIDEO
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Athena Big Bore 2005 YZ125
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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