NAMURA TECHNOLOGIES 8400-N247378-ATV Piston Kit Auto 84.45MM

( Brand: Namura Technologies ), ( Part Type: Piston ), ( Manufacturer Part Number: 8400-N247378-ATV )

Review NAMURA TECHNOLOGIES Piston Kit std Bore 84.45mm Yamaha Auto fits GRIZZLY YFM450 STD 4X4 2011–2014

Introducing the Namura 8400-N247378-ATV piston kit, specifically designed for the Yamaha YFM450 Grizzly 4x4 Auto models produced between 2011 and 2014. This piston kit is an essential upgrade for those seeking improved engine performance and durability for their all-terrain vehicle.

The Namura piston kit includes four high-quality pistons, each engineered with a forged aluminum construction. Forged pistons offer superior strength and rigidity compared to their cast counterparts. This enhanced durability is crucial for the heavy-duty demands of off-road riding.

Each piston features a standard 84.45mm bore size, ensuring a precise fit in your Yamaha engine. The piston skirts are designed with a honed finish, providing an optimal surface for ring sealing to prevent oil leaks and improve combustion efficiency.

Additionally, the piston tops are engineered with a dished shape, which helps in reducing the weight of the piston while maintaining optimal engine compression. This design contributes to better overall engine performance and improved fuel efficiency.

The piston kit also includes new rings, including compression rings, oil control rings, and wrist pins. These rings are precision-manufactured to ensure a tight seal and proper ring gap, leading to improved ring function and reduced engine wear.

Installing the Namura piston kit is a straightforward process, thanks to the included detailed installation instructions. The kit also includes all necessary hardware for installation, ensuring a complete and hassle-free upgrade experience.

In summary, the Namura 8400-N247378-ATV piston kit is a top-quality upgrade for those seeking improved engine performance and durability for their 2011-2014 Yamaha YFM450 Grizzly 4x4 Auto. With its high-quality forged aluminum pistons, honed piston skirts, and included rings and hardware, this kit is an excellent investment for any serious off-road enthusiast.

Pros and Cons of Buying a Namura 8400-N247378-ATV Piston Kit for 2011-2014 Yamaha YFM450 Grizzly 4x4 Auto

a. Wear and Tear: Over time, the piston in an ATV engine will wear out, leading to decreased performance and potential engine damage. Replacing the piston with a new one, such as the Namura 8400-N247378-ATV Piston Kit, can help improve the engine's efficiency and extend its lifespan.

b. Improved Performance: A new piston can lead to increased power output and better combustion efficiency, resulting in improved overall performance for your Yamaha YFM450 Grizzly 4x4 Auto.

c. Cost-Effective: In some cases, replacing a piston can be more cost-effective than other engine repairs or even a new ATV, especially if your vehicle has high mileage or significant wear.

a. Installation: Installing a new piston kit can be a complex and time-consuming process, requiring specialized tools and knowledge. It is recommended that this task be performed by a professional mechanic to avoid potential damage to the engine.

b. Expense: While the piston kit itself may be relatively affordable, the cost of labor for installation can add up significantly. Additionally, there may be other related components that need to be replaced during the process, increasing the overall cost.

c. Possible Engine Downtime: Depending on the complexity of the installation and the availability of a qualified mechanic, the piston replacement process could potentially result in extended downtime for your ATV.

The Namura 8400-N247378-ATV Piston Kit for the 2011-2014 Yamaha YFM450 Grizzly 4x4 Auto offers several benefits, including improved performance, extended engine lifespan, and cost-effectiveness. However, it also comes with drawbacks such as the complexity and expense of installation, as well as potential engine downtime. Ultimately, the decision to purchase this piston kit depends on your individual circumstances, budget, and priorities. If you are experiencing significant engine issues and are willing to invest in the installation process, this kit could be a worthwhile investment. Alternatively, if you are looking for a more cost-effective solution or prefer to avoid the installation process altogether, there may be other options to consider.

Before making a decision, carefully consider the pros and cons outlined above and weigh them against your specific needs and circumstances. It may be helpful to consult with a professional mechanic or Yamaha dealership for their expert advice and recommendations. Additionally, research alternative solutions, such as rebuilding the existing piston or considering a used or refurbished piston kit, to determine which option best fits your budget and goals.

part # 8400n247378 price

• $109.96

specifications atvsienna:

• for models: Yfm450, Std, 4x4, Grizzly
• for makes: Yamaha
• for years: 2011-2014
• brand: Namura Technologies
• part type: Piston
• manufacturer part number: 8400-N247378-ATV

seller atvsienna:

• # reviews: 86510
• rating: 99.9%

payments atvsienna:

• other
• credit card: Visa
• wallet: Paypal

returns atvsienna:

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

general atvsienna:

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

offer atvsienna:

• quantity: 2
• options: Ship-to-home
• started: June 4, 2026
• availability: In Stock
• sold: 0

shipping atvsienna:

• type: Fixed
• service: Standard
• transit: 2-5 Days
• cost: $0.00
• class: Standard

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