NAMURA NX-40009 Piston 10.7

( Brand: Namura ), ( Manufacturer Part Number: NX-40009 ), ( Type: Piston ), ( Items Included: Piston Rings, Wrist Pin ), ( Piston Diameter: 53.95 Mm )

Review NAMURA Motorcycle Piston For Yamaha fits YZ125 STD 2005–2021

The Namura NX-40009 STD Piston is a high-performance replacement piston specifically designed for Yamaha YZ125 motorcycles manufactured between 2005 and 2021. This piston is engineered to deliver superior power and durability, making it an excellent choice for riders seeking to enhance the performance of their YZ125.

The NX-40009 STD Piston is crafted using a forged aluminum alloy material, ensuring exceptional strength and reliability. Its compact design reduces weight, contributing to improved engine response and acceleration. This piston also features a high-strength wrist pin and rings that are precision machined for optimal ring seal and durability.

The combustion chamber of the NX-40009 STD Piston is designed with a proper dome shape and optimal piston-to-wall clearance to ensure efficient combustion and optimal engine performance. The piston skirt has been engineered with a proper taper to minimize friction and ensure smooth operation.

This piston comes with a piston pin and rings included in the package, making it a complete kit for easy installation. The installation process is straightforward, and the piston is designed to be a direct replacement for the stock piston on the Yamaha YZ125.

The Namura NX-40009 STD Piston is an excellent upgrade for riders who want to extract maximum performance from their Yamaha YZ125. Its superior strength, lightweight design, and efficient combustion chamber make it a popular choice among racers and enthusiasts alike. With the NX-40009 STD Piston, you can expect improved power, better throttle response, and enhanced engine durability.

The Namura NX-40009 STD piston is a aftermarket upgrade option for the Yamaha YZ125 motorcycles manufactured between 2005 and 2021. This piston is designed to enhance engine performance, durability, and efficiency. Here are some potential advantages and disadvantages of purchasing this piston:

1. Improved Performance: The Namura piston is engineered to provide better compression, increased power, and better overall engine performance compared to the OEM piston.

2. Enhanced Durability: The piston is made of high-quality, forged material that is designed to withstand the rigors of off-road racing or aggressive riding styles. It can handle higher temperatures and pressures, reducing the likelihood of engine failure.

3. Better Efficiency: The piston's design allows for improved combustion efficiency, resulting in better fuel economy and reduced emissions.

4. Customization: Upgrading to a high-performance piston like the Namura NX-40009 STD can be a cost-effective way to customize your Yamaha YZ125 and give it a competitive edge.

1. Cost: Aftermarket pistons like the Namura NX-40009 STD can be more expensive than OEM parts. The cost may vary depending on the supplier and shipping fees.

2. Installation Complexity: Installing a high-performance piston like this one requires specialized tools and knowledge. It may be necessary to take the engine apart, which can be a time-consuming and labor-intensive process.

3. Potential Compatibility Issues: Although the Namura piston is designed to fit the Yamaha YZ125, there is still a chance that it may not be fully compatible with all engines in this model range. It is important to ensure that you are purchasing the correct part for your specific bike.

The Namura NX-40009 STD piston offers several advantages, including improved engine performance, enhanced durability, better efficiency, and the ability to customize your Yamaha YZ125. However, it also comes with some disadvantages, such as a higher cost, installation complexity, and potential compatibility issues. Ultimately, whether or not to purchase this piston depends on your budget, technical expertise, and desired level of performance enhancement for your motorcycle.

If you are an experienced motorcycle mechanic, enjoy working on your bike, and are looking for a significant performance upgrade, the Namura NX-40009 STD piston may be an excellent investment for your Yamaha YZ125. However, if you are a casual rider, have limited mechanical experience, or prefer a more straightforward upgrade, you may want to consider other options, such as air filters, exhaust systems, or suspension components. Always make sure to purchase parts from a reputable supplier and follow the installation instructions carefully to ensure a successful installation.

Details:

Shipping: Items are shipped within a timely manner. Combined shipping is available for multiple items. Specifications: Part: Piston, Size: 53.95mm, Oversize: Std, Piston Type: Cast, Ring Count: Single Ring, Compression Ratio: 10.7:1. Product Features Anodized piston head increases strength and heat dissipation.

CRU Products was started by Cycles R Us in 2009. All components are manufactured to OE-specs. Fits:Make: model: Year: Note: Yamaha's 10.7:1 Compression, YamahaYZ125 Team Yamaha2011-201410.7:1 Compression. MOST Namura pistons feature a machined head which helps reduce carbon build-up and reflect heat.

part #: nx40009 prices

• $72.68-$86.99

specifications pistondon:

• for models: Yz125, Std
• for makes: Yamaha
• for years: 2005-2021
• brand: Namura
• mpn: Nx-40009
• type: Piston
• items included: Piston Rings, Wrist Pin
• piston diameter: 53.95 Mm

payments pistondon:

• credit card: Diners-club
• other
• wallet: Google-pay

general pistondon:

• Motorcycle Scooter Parts Accessories > Engines Engine Parts > Pistons, Rings Piston Kits
• condition: New

seller pistondon:

• city: Chippewa Lake, Ohio
• rating: 99.8%
• # reviews: 108009

returns pistondon:

• policy: Returns Accepted
• paid by: Seller
• time: 30 Days

offer pistondon:

• quantity: 3
• sold: 0
• options: Ship-to-home
• started: December 22, 2025
• availability: In Stock

shipping pistondon:

• cost: $0.00
• transit: 4-7 Days
• service: Standard
• type: Fixed
• class: Standard

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