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Engines and Components› Pistons and Piston Rings

Athena

Athena 03-10 Yamaha WR 450 F HC 94.94mm 4T Forged Racing Piston

$286.95 $222.25 Save $64.70

SKU: A0EF S4F09500021A

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Special Order
Ships in 4–6 weeks
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

This high-quality 4-stroke forged piston from Athena is designed for off-road motorcycles, specifically the Yamaha WR 450 F 2003-2009 and 2011-2018 models. Manufactured using reverse extrusion and CNC machining, it ensures precise dimensional tolerances (less than 0.01 mm). Made from special nickel, silica, and aluminum alloys, it offers robustness, enhanced resistance, and superior performance. Its profile is designed for optimal flame propagation and consistent flow, ensuring efficient power delivery.

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.

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Specifications

BrandAthena
Part NumberA0EF S4F09500021A

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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