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Athena P400485100039 Cylinder Kit Big Bore Stroker 112cc; Yamaha 85 YZ 85 02-18; 53mm Bore with Cylinder Head and Crankshaft included

Description

MAXIMIZE YOUR RACING PERFORMANCE WITH ULTIMATE STROKER POWER Unleash the absolute maximum power, extreme low-end torque, and explosive acceleration hidden within your youth 2-stroke racing engine with the Athena Big Bore Stroker Cylinder Kit (Part No. P400485100039), a premier, race-proven package engineered in Italy to convert your factory setup into a high-revving 112cc powerhouse. This ultimate top-and-bottom-end overhaul features an aluminum cylinder treated with a specialized Motor-Nicksil (Nickel-Silicon) coating for superior thermal dissipation and ultra-low friction, working in perfect synchronization with an included high-performance long-stroke racing crankshaft. This complete competition assembly comes fully loaded with a custom-profiled high-compression cylinder head, premium cast piston, rings, wrist pin, hardware, and a specific high-tightness multi-layer gasket set—allowing you to scale up track performance significantly without requiring any structural machining modifications to your factory crankcase.

Athena P400485100039 Cylinder Kit Big Bore Stroker 112cc; Yamaha 85 YZ 85 02-18; 53mm Bore with Cylinder Head and Crankshaft included

Product form

SKU: P400485100039

MAXIMIZE YOUR RACING PERFORMANCE WITH ULTIMATE STROKER POWER Unleash the absolute maximum power, extreme low-end torque, and explosive acceleration hidden... Read more

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2 in stock 2 - 4 Business Days

$1,180.95

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    • Shipped today? Order within: Jul 09, 2026 14:00:00 -0500
    • Free shipping on all orders. (Shipping only available to lower 48 states)
    • Hassle Free, Returns within 30 days

    Description

    MAXIMIZE YOUR RACING PERFORMANCE WITH ULTIMATE STROKER POWER Unleash the absolute maximum power, extreme low-end torque, and explosive acceleration hidden within your youth 2-stroke racing engine with the Athena Big Bore Stroker Cylinder Kit (Part No. P400485100039), a premier, race-proven package engineered in Italy to convert your factory setup into a high-revving 112cc powerhouse. This ultimate top-and-bottom-end overhaul features an aluminum cylinder treated with a specialized Motor-Nicksil (Nickel-Silicon) coating for superior thermal dissipation and ultra-low friction, working in perfect synchronization with an included high-performance long-stroke racing crankshaft. This complete competition assembly comes fully loaded with a custom-profiled high-compression cylinder head, premium cast piston, rings, wrist pin, hardware, and a specific high-tightness multi-layer gasket set—allowing you to scale up track performance significantly without requiring any structural machining 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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