Engines and Components› Pistons and Piston Rings
Athena
Athena 10-18 Yamaha YFZ 450 Bill Balance Edition 97.94mm Big Bore Cyl 4T Forged Racing Piston
SKU: A0EF S4F09800004A
Moderate — 2–4 hours
Description
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
| Brand | Athena |
| Part Number | A0EF S4F09800004A |
Videos
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Yfz 450 big bore 58 hp
Yfz 480 big bore kit.
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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