NAMURA NA-40008-2 Piston 758891086176 0.5MM 84.92MM 10.5 400/GRIZZLY

( Brand: Namura ), ( Part Type: Piston ), ( Manufacturer Part Number: NA-40008-2 ), ( UPC: 758891086176 )

Review NAMURA Piston 0.5mm 84.92mm 10.5 Yamaha 400/grizzly fits KODIAK GRIZZLY 400

Introducing the Namura NA-40008-2 piston, specifically designed for the Yamaha Kodiak 400 and Grizzly 400 ATV models. This high-performance piston is engineered to deliver exceptional power and reliability, making it an excellent choice for riders seeking to enhance their ATV's performance.

The NA-40008-2 piston boasts a 0.5mm oversize design, which increases the engine's compression ratio and, in turn, improves combustion efficiency. With a total length of 84.92mm and a piston crown diameter of 10.5 inches, this piston is meticulously crafted to fit perfectly into the engine of your Yamaha Kodiak 400 or Grizzly 400.

This piston is manufactured using advanced forging techniques to ensure maximum strength and durability. The piston skirt is designed with a full-skirted, oil-cooled, and ribbed design, which effectively reduces friction and heat build-up, ensuring a longer piston life. Moreover, the piston crown is engineered with a dish shape to improve combustion efficiency and power output.

The NA-40008-2 piston is also equipped with a ring package that includes a compression ring, oil control ring, and a top ring. These rings are designed to provide optimal sealing and ring grip, ensuring stable engine performance and minimal oil consumption.

In conclusion, the Namura NA-40008-2 piston is an excellent upgrade for Yamaha Kodiak 400 and Grizzly 400 ATVs, offering improved power, efficiency, and reliability. Made from high-quality materials and utilizing advanced manufacturing techniques, this piston is designed to stand up to the rigors of off-road riding while delivering impressive performance gains.

The Namura NA-40008-2 piston is a replacement option for the Yamaha Kodiak 400 and Grizzly 400 ATV models. This piston comes with a 0.5mm compression ring gap, an 84.92mm bore size, and a 10.5 stroke length. In this response, we will discuss the potential advantages and disadvantages of purchasing this piston.

1. Improved engine performance: A new piston can enhance the overall performance of the engine by ensuring a proper seal, reducing compression loss, and allowing for optimal combustion.

2. Increased durability: A high-quality aftermarket piston like the Namura NA-40008-2 can last longer than the stock piston, especially if the engine experiences heavy usage or high mileage.

3. Cost-effective solution: Replacing a worn-out or damaged piston with a new aftermarket option can be more cost-effective than purchasing a new or rebuilt engine.

1. Potential installation issues: Installing a new piston involves disassembling the engine, which can be a complex and time-consuming process. Additionally, there is a risk of damaging other engine components during installation if not done correctly.

2. Risk of engine damage: Installing the wrong piston or using a low-quality aftermarket option can potentially cause engine damage, including seizure or catastrophic failure.

3. Expense: While the piston itself may be cost-effective, the labor and tools required for installation can add up to a significant expense.

The Namura NA-40008-2 piston can offer improved engine performance and increased durability for Yamaha Kodiak 400 and Grizzly 400 ATV owners. However, the installation process can be complex and time-consuming, and there is a risk of engine damage if not done correctly. Prospective buyers should ensure they purchase the correct piston for their specific engine model and consider their mechanical skills and resources before deciding to install it themselves.

If you are comfortable with the installation process and have access to the necessary tools and expertise, purchasing the Namura NA-40008-2 piston can be a cost-effective solution for enhancing the performance and longevity of your Yamaha Kodiak 400 or Grizzly 400 ATV engine. Alternatively, you may consider having a professional mechanic install the piston for you to minimize the risk of error and potential engine damage.

part # na400082 prices

• $73.54-$81.99

specifications atvsienna:

• for models: 400, Kodiak, Grizzly
• for makes: Yamaha
• brand: Namura
• part type: Piston
• manufacturer part number: NA-40008-2
• upc: 758891086176

returns atvsienna:

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

offer atvsienna:

• sold: 0
• availability: In Stock
• quantity: 4
• options: Ship-to-home
• started: June 10, 2026

general atvsienna:

• condition: New
• ATV, Side-by-Side UTV Parts Accessories > Engines Engine Parts > Other Engine Parts

shipping atvsienna:

• service: UPS Ground
• type: Fixed
• transit: 3-6 Days
• cost: $0.00
• class: Standard
• carrier: UPS

payments atvsienna:

• wallet: Paypal
• credit card: Discover
• other

seller atvsienna:

• # reviews: 724647
• rating: 99.8%

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