NAMURA TECHNOLOGIES NA-40005-6 Piston Kit 758891086084 1.50MM 84.45MM

( Brand: Namura Technologies ), ( Manufacturer Part Number: NA-40005-6 ), ( Type: Top End Kit ), ( UPC: 758891086084 )

Review NAMURA TECHNOLOGIES Piston Kit 1.50mm Oversize To 84.45mm For Yamaha

Introducing the Namura NA-40105-6 Piston Kit, specifically designed for 1.5L Yamaha engines with a piston diameter of 84.45mm and a piston pin diameter of 1.50mm. This piston kit is an excellent upgrade for those seeking improved engine performance, durability, and efficiency.

Each piston in this kit is meticulously crafted from high-quality forged aluminum alloy, ensuring superior strength and reliability. The piston crowns are engineered with an optimal dome shape for efficient combustion and optimal power output. The pistons are also coated with a thermal spray coating, which enhances their heat resistance and durability, allowing them to withstand the extreme temperatures and pressures inside the engine cylinder.

The piston kit includes six pistons and six piston rings. The piston rings are made from a high-performance material that ensures a tight seal in the cylinder bore, reducing engine blow-by and improving combustion efficiency. The piston rings also have a precise ring groove design, ensuring a proper fit and reducing the likelihood of ring noise or wear.

The piston kit also includes new piston pins, which are made from high-strength steel and are precision machined to ensure a perfect fit in the piston and crankshaft. The piston pins are also coated with a hard anodizing to enhance their durability and reduce the likelihood of wear and galling.

This piston kit is an excellent upgrade for Yamaha engines that have accumulated high mileage or have experienced wear and tear. It is also suitable for performance applications where increased power output and efficiency are desired. The pistons are easy to install and come with clear installation instructions.

In summary, the Namura NA-40105-6 Piston Kit is a high-quality, durable, and efficient upgrade for Yamaha engines. Its precision-engineered components are designed to provide improved engine performance, reliability, and longevity. Whether you are seeking to restore an old engine or enhance the performance of a modern one, this piston kit is an excellent choice.

The Namura NA-40005-6 piston kit is a popular aftermarket option for those looking to upgrade their Yamaha engine. Here are some potential pros and cons of purchasing this piston kit:

1. Enhanced Performance: The pistons in the NA-40005-6 kit are forged, which makes them stronger and more durable than OEM pistons. This can lead to improved engine performance, including increased horsepower and torque.

2. Improved Thermal Efficiency: The pistons in the kit are designed with a 1.50mm compression height, which can help improve the engine's thermal efficiency. This means that the engine will be able to extract more energy from the fuel it burns, leading to better fuel economy.

3. Durability: Forged pistons are known for their durability, which can help extend the life of the engine. This can be especially important for high-performance applications or for engines that are subjected to heavy use.

4. Cost-Effective: Compared to other aftermarket piston options, the NA-40005-6 kit is relatively affordable. This makes it a good choice for those looking to upgrade their engine without breaking the bank.

1. Installation Complexity: Installing aftermarket pistons can be a complex and time-consuming process. It may require specialized tools and a high level of mechanical expertise.

2. Potential Compatibility Issues: While the NA-40005-6 kit is designed to fit Yamaha engines, there is always a risk of compatibility issues. It's important to make sure that the pistons are the correct size and shape for your engine before making a purchase.

3. Potential Power Increase: Depending on the specific engine and application, the increased power output from the pistons may not be desirable. For some applications, a power increase could lead to increased wear and tear on other engine components.

The Namura NA-40005-6 piston kit can be a good choice for those looking to upgrade the performance of their Yamaha engine while also improving its durability. However, it's important to consider the potential complexity of the installation process and the potential compatibility issues before making a purchase. Additionally, those who do not want or need the increased power output from the pistons may want to consider other options.

If you are confident in your mechanical abilities and want to improve the performance and durability of your Yamaha engine, the Namura NA-40005-6 piston kit could be a good choice for you. However, if you are unsure about the installation process or have compatibility concerns, it may be worth consulting with a professional mechanic or doing further research before making a purchase. Additionally, if you do not want the increased power output, you may want to consider other options that are better suited to your specific application.

Details:

Anodized Domes. Reflects combustion heat and reduces carbon buildup, protecting the top of piston. Hyper eutectic Casting Process. Piston kit includes: piston, rings, wrist pin and clips.

9.2:1 STD COMPRESSION. A rolled-on application process provides a bond that is 10 times stronger than other spray on coatings. MOS2 Teflon/Molybdenum Coated Skirts. Benefits include increased heat transfer, reduced friction, and helping to eliminate cold seizures.

Machined Smooth Heads. 350 MOTO-4 - 1987 95YFM350 BIG BEAR 2X4 1987 98YFM350 4X4 1997 99YFM350 WARRIOR 1987 04 YFM350 WOLVERINE 1995 05YFM350 2006 09YFM350 BRUIN 2004 06YFM350 RAPTOR 2004 13 YFM350 GRIZZLY 2007 -14.

part #: na400056 prices

• $73.22-$80.71

specifications pistondon:

• for makes: Yamaha
• brand: Namura Technologies
• mpn: Na-40005-6
• type: Top End Kit
• upc: 758891086084

seller pistondon:

• rating: 99.7%
• city: Yorktown, Virginia
• # reviews: 147810

offer pistondon:

• sold: 0
• availability: In Stock
• options: Ship-to-home
• started: November 24, 2025
• quantity: 4

payments pistondon:

• other
• wallet: Paypal
• credit card: Mastercard

shipping pistondon:

• type: Fixed
• transit: 5-11 Days
• class: Standard
• service: Standard
• cost: $0.00

general pistondon:

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

returns pistondon:

• paid by: Seller
• policy: Returns Accepted
• time: 60 Days

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