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The NAMURA NX-70004-CK Top End Kit is designed for KTM engines, featuring a precision-engineered Nikasil cylinder with a 46.97mm bore and a +0.02mm oversize for optimal performance. This comprehensive kit includes a high-quality piston, rings, wrist pin, clips, top end bearing, and gasket kit, providing all essential components for a complete rebuild or upgrade.
Constructed with advanced materials, the piston features MOS2 (Teflon/Molybdenum) coated skirts, which are applied through a rolled-on process creating a bond ten times stronger than typical spray coatings. This coating improves heat transfer and reduces friction, helping to prevent cold seizures and ensuring smoother operation under demanding conditions. The machined smooth heads reflect combustion heat efficiently and are designed to lower carbon buildup, contributing to increased horsepower and fuel economy by up to 6%.
The anodized domes enhance heat resistance and durability, making the piston 75% stronger than non-anodized alternatives. The hypereutectic casting process used in manufacturing provides higher silicon content for reduced expansion rates and increased wear resistance, enabling the piston to withstand higher cylinder temperatures. Together, these features deliver a reliable, high-performance upgrade suitable for racing or aggressive riding, ensuring longevity and consistent power output for KTM enthusiasts.
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