NA-50025-4K Top End Kit 79.45/+1.00 11:1 Pol
NA-50025-4K Top End Kit 79.45/+1.00 11:1 Pol
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NA-50025-4K Top End Kit 79.45/+1.00 11:1 Pol
Unleash the full potential of your engine with the NA-50025-4K Top End Kit. Designed for performance enthusiasts, this kit offers a comprehensive solution to enhance your engine's efficiency and power output.
Features and Benefits:
- Complete Kit: This top end kit includes everything you need: piston, rings, wrist pin, clips, top end bearing, and a gasket kit.
- MOS2 Coated Skirts: Our unique Teflon/Molybdenum coated skirts utilize a rolled-on application process, creating a bond that is ten times stronger than traditional spray coatings. Experience improved heat transfer and reduced friction, which helps eliminate cold seizures.
- Machined Smooth Heads: These heads not only reflect combustion heat but also reduce carbon buildup, ensuring optimal performance. Some tests indicate an increase in horsepower and fuel economy by up to 6%.
- Anodized Domes: Our pistons feature anodized domes, enhancing heat resistance and durability. With a strength increase of 75% compared to non-anodized pistons, you can trust in their performance.
- Hypereutectic Casting Process: This advanced manufacturing technique results in higher silicon content, reducing expansion rates and providing additional wear resistance. Our pistons can withstand higher cylinder temperatures, making them ideal for performance applications.
Upgrade your engine with the NA-50025-4K Top End Kit and feel the difference in power, reliability, and performance. Perfectly engineered for those who demand excellence from their machines.
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.

