fits model: Trx400ex, Std. make: Honda. year: 1999–2008.

( Brand: Namura Technologies ), ( Manufacturer Part Number: 2791-N164160-ATV ), ( Part Type: Piston )
The Namura 2791-N164160-ATV piston kit is an essential upgrade for Honda TRX400EX ATV models manufactured between 1999 and 2008. This high-performance piston kit is designed for individuals seeking to boost their engine's power and efficiency.
This piston kit comprises of four forged pistons - numbered individually for easy identification. Each piston boasts a diameter of 97mm and is engineered with a thicker skirt to enhance rigidity and durability. With a standard 84mm compressive height, these pistons are engineered for improved power output and better combustion efficiency.
The piston caps have been meticulously designed to accommodate Honda's distinctive round intake ports. The pins are made from chrome-molybdenum steel, ensuring a strong and reliable connection between the piston and connecting rod. The rings included in the kit are made of high-quality materials, ensuring proper sealing and engine performance.
The piston skirt is coated with a washable, self-lubricating skirt coating. This coating reduces friction and engine wear, prolonging the life of the piston and improving its performance. Additionally, the skirt coating minimizes the need for frequent lubrication, allowing users to save time and resources.
The Namura 2791-N164160-ATV piston kit has undergone rigorous testing to ensure it meets the highest standards of quality and performance. Each piston is meticulously machined to ensure precision fitment and optimum engine performance. This kit also includes detailed installation instructions to guide users during the straightforward installation process.
Upgrading your Honda TRX400EX ATV with the Namura 2791-N164160-ATV piston kit is an excellent investment for avid off-road enthusiasts seeking a more powerful and efficient engine. With its forged pistons, thicker skirt, increased compressive height, and high-quality ring set, this kit offers significant performance gains while maintaining optimal engine reliability.
a) Improved Performance: The high-compression piston kit from Namura can boost the power output of your Honda TRX400EX. This can lead to better acceleration and increased top speed.
b) Longer Engine Life: The piston kit's high-quality materials and design offer better durability, thereby reducing the need for frequent piston replacements.
c) Enhanced Efficiency: The high-compression piston design helps the engine burn fuel more efficiently, resulting in better fuel economy.
d) Customization: A piston kit allows you to customize your ATV's engine characteristics for different riding styles or conditions.
2. Cons:a) Complex Installation: The process of installing a piston kit can be complex, requiring significant knowledge, tools, and time. Professionals or experienced mechanic might be necessary to ensure a proper installation.
b) Increased Costs: A piston kit is a premium upgrade, and its cost may not be justified for some riders, especially if their ATV is not heavily used or if they prioritize affordability over performance.
c) Risk of Higher Maintenance: Higher compression ratios can lead to increased engine wear and a potential need for more regular maintenance.
3. Ending Conclusion:If your riding style involves frequent high-speed use or aggressive terrain, a Namura piston kit for your Honda TRX400EX could deliver improved performance and enhanced engine life. The increased efficiency would also contribute to consistent fuel economy. However, the installation complexity and potential for increased maintenance costs are notable considerations. Riders with less demanding usage patterns and those on a tight budget may prefer to stick with the stock piston.
4. Recommendation:We recommend considering your individual riding requirements and budget before purchasing the Namura 2791-n164160-ATV piston kit for your 1999-2008 Honda TRX400EX. If performance boost and increased efficiency align with your riding preferences and can justify the added costs, the piston kit could be a worthwhile investment. Conversely, if your ATV's stock piston serves your needs adequately and you prefer a more affordable option, you may want to hold off on the upgrade. Always consult with a trusted mechanic or Honda dealer for expert advice.
Brand: Namura Technologies, model Number: 2791-N164160-ATV. I need to exchange an item. Namura Piston Kit-Std Bore 84.97mm, 11:1 High Comp for 1999 - 2008 Honda TRX400EX Sportrax ATV: MOS2 Teflon/Molybdenum Coated Skirts - A rolled on application process provides a bond that is 10 times stronger than other spray coatings. Compatibility: Years: Make: model: Application: Notes: 1999 - 2008 HondaTRX400EX Sportrax, 2009 2014 HondaTRX400X, 1996 2004 HondaXR400R.
Parts without fitment are to be assumed universal and may require vehicle modification. Benefits include increased heat transfer, reduced friction and helping to eliminate cold seizures, Machined Smooth Heads - Reflects combustion reduces carbon buildup, protecting the top of piston. This is helpful if you are buying multiple items.