Engines and Components› Pistons and Piston Rings
Athena
Athena 99-24 Yamaha YZ 250 2T 66.35mm Bore Forged 2-Stroke Top End Piston Kit w/Gasket Kit
SKU: A0EF P4F0664267019B
Moderate — 2–4 hours
Description
The kit includes the piston and a top-end gasket kit. The piston's smooth profile aids in regular flow and flame propagation, while some skirts are treated with a molybdenum disulfide coating to reduce friction. The included piston rings ensure a good seal and less friction for higher performance.
Fitment
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Available on iOS & Android
Specifications
| Brand | Athena |
| Part Number | A0EF P4F0664267019B |
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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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