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Athena P400485100017 Standard Bore Cylinder Kit (54mm, 125cc) - Premium 2-Stroke Top End Rebuild Kit with Forged Piston & Gaskets, Compatible with Yamaha YZ125 2005-2021

Description

RESTORE YOUR DIRT BIKE TO PEAK OEM PERFORMANCE Bring back the crisp throttle response, razor-sharp power delivery, and high-revving factory reliability of your 125cc two-stroke engine with the Athena Standard Bore Cylinder Kit (Part No. P400485100017), a premium OEM-style replacement package engineered and manufactured in Italy. Entirely cast from high-grade aluminum and treated with a specialized Motor-Nicksil (Nickel-Silicon) coating, this cylinder guarantees exceptional thermal dissipation, minimal friction, and optimal wear resistance to match or exceed original equipment standards across the entire RPM range. This complete bolt-on kit comes fully loaded with everything required for a flawless top-end rebuild—including a precision-machined 54mm standard bore cylinder, a high-performance forged piston assembly coated with molybdenum, premium rings, wrist pin, circlips, and a specific high-tightness gasket set—allowing you to drop compression losses and refresh your engine without requiring any machining or structural engine modifications to your factory crankcase.

Athena P400485100017 Standard Bore Cylinder Kit (54mm, 125cc) - Premium 2-Stroke Top End Rebuild Kit with Forged Piston & Gaskets, Compatible with Yamaha YZ125 2005-2021

Product form

SKU: P400485100017

RESTORE YOUR DIRT BIKE TO PEAK OEM PERFORMANCE Bring back the crisp throttle response, razor-sharp power delivery, and high-revving factory... Read more

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3 in stock 2 - 4 Business Days

$1,027.95

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    • Shipped today? Order within: Jul 08, 2026 14:00:00 -0500
    • Free shipping on all orders. (Shipping only available to lower 48 states)
    • Hassle Free, Returns within 30 days

    Description

    RESTORE YOUR DIRT BIKE TO PEAK OEM PERFORMANCE Bring back the crisp throttle response, razor-sharp power delivery, and high-revving factory reliability of your 125cc two-stroke engine with the Athena Standard Bore Cylinder Kit (Part No. P400485100017), a premium OEM-style replacement package engineered and manufactured in Italy. Entirely cast from high-grade aluminum and treated with a specialized Motor-Nicksil (Nickel-Silicon) coating, this cylinder guarantees exceptional thermal dissipation, minimal friction, and optimal wear resistance to match or exceed original equipment standards across the entire RPM range. This complete bolt-on kit comes fully loaded with everything required for a flawless top-end rebuild—including a precision-machined 54mm standard bore cylinder, a high-performance forged piston assembly coated with molybdenum, premium rings, wrist pin, circlips, and a specific high-tightness gasket set—allowing you to drop compression losses and refresh your engine without requiring any machining or structural engine modifications to your factory crankcase.

    Returns & Delivery

    When will my order be delivered?

    We ship to all lower 48 US states Your order will be packaged and shipped the same day you ordered as long as you order before 2:00 pm CST.
    Delivery takes between 2-4 business days. You will receive an e-mail after ordering with your tracking number so you can track the packages progress to your address.

    Can I return my product?

    Orders can be returned or exchanged within 30 days of receiving the package, provided they are in original resalable condition. If the product has been used or damage, a restocking fee may occur. Please see our Return Policy for further clarification.

    How can I contact you if I have issues or questions?

    You may contact us at sales@massdepot.com Our dedicated customer support will answer your questions or concerns within 24 hours of you reaching out.

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