NA-40012K Top End Kit 101.97/Std 9.2:1 Yam
NA-40012K Top End Kit 101.97/Std 9.2:1 Yam
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NA-40012K Top End Kit 101.97/Std 9.2:1 Yam
Unlock the full potential of your engine with the NA-40012K Top End Kit. This comprehensive kit is designed to enhance performance, durability, and efficiency, making it an essential upgrade for any serious rider or mechanic.
Key Features:
- Complete Top End Kit: Includes everything you need - piston, rings, wrist pin, clips, top end bearing, and a gasket kit.
- MOS2 (Teflon/Molybdenum) Coated Skirts: Our unique rolled-on application process ensures a bond that is 10 times stronger than traditional spray coatings, increasing heat transfer, reducing friction, and minimizing the risk of cold seizures.
- Machined Smooth Heads: Designed to reflect combustion heat and minimize carbon buildup, our smooth heads not only protect the piston but can also boost horsepower and improve fuel economy by up to 6%.
- Anodized Domes: Enhances heat resistance and durability with pistons that are 75% stronger than their non-anodized counterparts, ensuring longevity in high-performance situations.
- Hypereutectic Casting Process: Features higher silicon content for reduced expansion rates and increased wear resistance, allowing the kit to withstand higher cylinder temperatures, ensuring optimum performance.
Why Choose the NA-40012K Top End Kit?
This kit is engineered for those who demand excellence. With a focus on performance and reliability, the NA-40012K Top End Kit delivers unmatched quality and results. Whether you're enhancing your existing setup or building a new engine, this kit is designed to provide the ultimate in performance and durability.
Upgrade your engine today with the NA-40012K Top End Kit and experience the difference in power and efficiency!
Shipping & Returns
Shipping & Returns
📦 Shipping:
Orders are processed within 1–2 business days. Standard delivery takes 3–7 business days, depending on your location.
↩️ Returns:
You may return or exchange products within 60 days of receiving your order. Items must be in original condition with proof of purchase. If your item is defective or damaged due to manufacturing issues, we’ll replace it at no additional cost.

