## Namura Complete Piston NA-40004-4 - 100.97mm (+1mm) Boost the performance and reliability of your motorcycle or ATV engine with the Namura NA-40004-4 complete piston kit, featuring a 100.97mm (+1mm) diameter. This high-quality piston kit from renowned brand Namura offers an excellent alternative to replacing the entire cylinder, providing significant cost savings. ### Advanced Technologies for Maximum Performance The Namura NA-40004-4 piston kit utilizes a range of advanced technologies to ensure optimal engine performance: * **MOS2 (Teflon/Molybdenum) Coating:** The piston skirts are coated with a special MOS2 coating that minimizes friction, improves heat transfer, and prevents cold seizures. * **Machined Smooth Head:** The piston head is precisely machined to reflect combustion heat and reduce carbon buildup, resulting in increased horsepower and fuel economy of up to 6%. * **Anodized Dome:** The anodized piston dome provides increased resistance to high temperatures and extended lifespan. * **Hypereutectic Casting:** The hypereutectic casting process ensures higher silicon content, reduced thermal expansion, and additional wear resistance. ### Complete Kit Ready for Installation The Namura NA-40004-4 piston kit includes: * Individually wrapped piston * Set of OEM quality rings * Wrist pin * Circlips ### Benefits of Choosing Namura By choosing the Namura NA-40004-4 piston, you are investing in: * **Increased Engine Performance:** Enhance the power and torque of your vehicle. * **Reliability and Durability:** Extend the life of your engine with advanced technologies. * **Cost Savings:** Avoid the expensive replacement of the cylinder. The +1mm piston oversize refers to the difference between the nominal piston diameter and the diameter of the cylinder in which it operates. ### Professional Installation It is recommended that the installation of the Namura NA-40004-4 piston kit be carried out by a qualified mechanic.