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Athena P400485100024 392cc Big Bore Cylinder Kit with Cylinder Head (68mm Bore) - Premium Twin-Cylinder 2-Stroke Performance Upgrade, Compatible with Yamaha Banshee 350 1987-2006

Description

UPGRADE YOUR SPORT ATV TO THE NEXT LEVEL OF PERFORMANCE Extract massive power, aggressive low-end torque, and unmatched acceleration from your legendary 350cc twin-cylinder, two-stroke sport ATV with the Athena Big Bore Cylinder Kit (Part No. P400485100024), a premium race-proven package engineered in Italy to seamlessly convert your factory setup into a high-revving, high-output 392cc powerhouse. Both cylinders are entirely cast from high-grade aluminum and treated with a specialized Motor-Nicksil (Nickel-Silicon) coating, ensuring exceptional thermal dissipation, minimal friction, and optimal wear resistance to deliver a substantial increase along the entire power curve while maintaining strict reliability. This complete bolt-on kit comes fully loaded with everything required for a flawless installation—including two precision-machined 68mm big bore cylinders, a dedicated high-compression modular aluminum cylinder head with redesigned combustion domes, dual premium cast piston assemblies, rings, wrist pins, clips, and a specific high-tightness multi-layer gasket set—allowing you to dramatically increase sand dune and trail performance without requiring any complex machining or structural modifications to your factory crankcase.

Athena P400485100024 392cc Big Bore Cylinder Kit with Cylinder Head (68mm Bore) - Premium Twin-Cylinder 2-Stroke Performance Upgrade, Compatible with Yamaha Banshee 350 1987-2006

Product form

SKU: P400485100024

UPGRADE YOUR SPORT ATV TO THE NEXT LEVEL OF PERFORMANCE Extract massive power, aggressive low-end torque, and unmatched acceleration from... Read more

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2 in stock 2 - 4 Business Days

$1,297.95

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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

    UPGRADE YOUR SPORT ATV TO THE NEXT LEVEL OF PERFORMANCE Extract massive power, aggressive low-end torque, and unmatched acceleration from your legendary 350cc twin-cylinder, two-stroke sport ATV with the Athena Big Bore Cylinder Kit (Part No. P400485100024), a premium race-proven package engineered in Italy to seamlessly convert your factory setup into a high-revving, high-output 392cc powerhouse. Both cylinders are entirely cast from high-grade aluminum and treated with a specialized Motor-Nicksil (Nickel-Silicon) coating, ensuring exceptional thermal dissipation, minimal friction, and optimal wear resistance to deliver a substantial increase along the entire power curve while maintaining strict reliability. This complete bolt-on kit comes fully loaded with everything required for a flawless installation—including two precision-machined 68mm big bore cylinders, a dedicated high-compression modular aluminum cylinder head with redesigned combustion domes, dual premium cast piston assemblies, rings, wrist pins, clips, and a specific high-tightness multi-layer gasket set—allowing you to dramatically increase sand dune and trail performance without requiring any complex machining or structural 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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