NA-50001-4K Top End Kit 80.95/+1.00 11:1 Pol
NA-50001-4K Top End Kit 80.95/+1.00 11:1 Pol
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NA-50001-4K Top End Kit 80.95/+1.00 11:1 Pol
Unlock the full potential of your engine with the NA-50001-4K Top End Kit. Designed for performance enthusiasts and everyday riders alike, this comprehensive kit is engineered to enhance the power and efficiency of your machine.
Features:
- Complete Top End Kit: Includes everything you need for a full overhaul: piston, rings, wrist pin, clips, top end bearing, and a specialized gasket kit.
- MOS2 Coated Skirts: Experience the benefits of Teflon/Molybdenum coated skirts, offering a bond that is 10 times stronger than traditional spray-on coatings. This feature enhances heat transfer, reduces friction, and helps eliminate cold seizures.
- Machined Smooth Heads: This design reflects combustion heat and minimizes carbon buildup, protecting your piston while potentially increasing horsepower and fuel economy by up to 6%.
- Anodized Domes: The anodization process increases the heat resistance and durability of your pistons, making them 75% stronger than non-anodized alternatives.
- Hypereutectic Casting Process: With a higher silicon content, this process provides reduced expansion rates and enhanced wear resistance, allowing the pistons to withstand higher cylinder temperatures.
Benefits:
- Increased engine power and efficiency
- Long-lasting performance with reduced maintenance needs
- Improved heat management leading to enhanced engine longevity
Use Cases:
Whether you're tuning your motorcycle for track days, enhancing your ATV for off-road adventures, or simply seeking reliable performance for your daily ride, the NA-50001-4K Top End Kit is your go-to solution for superior engine performance.
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.

