NAMURA ATTO-HO374435-81 Atv Topend Rebuild Kit 69.45MM

( Brand: Namura ), ( Manufacturer Part Number: ATTO-HO374435-81 )

Review NAMURA Honda Atv Topend Rebuild Kit 69.45mm fits 250EX TRX 2001–2008

Introducing the Namura Atto-Ho374435-81 Top End Rebuild Kit for the 2001-2008 Honda TRX 250EX ATV, designed to help you breathe new life into your quad bike's engine. This comprehensive rebuild kit includes all the necessary components to restore the top end of your engine to its original performance and efficiency.

The kit features precision-machined, high-quality parts that are engineered to fit your Honda TRX 250EX ATV perfectly. These parts include a new piston, piston pin, piston ring set, cylinder liner, and cylinder head gasket. Each component is meticulously crafted to ensure a snug and secure fit, minimizing the need for any modifications or adaptations.

The piston is a critical part of your engine, and this kit includes a replacement piston specifically designed for the 2001-2008 Honda TRX 250EX ATV. This piston is made from a durable, heat-resistant material, ensuring it can withstand the demanding conditions of off-road riding. It also features a precision-machined surface, ensuring a smooth fit in the cylinder bore and minimizing friction for optimal engine performance.

The piston ring set included in this kit consists of three rings: the compression ring, the oil control ring, and the skirt ring. Each ring is designed to perform a specific function in the engine, and they work together to maintain proper compression and oil control. The rings are made from high-quality materials that ensure a long service life and efficient engine performance.

The cylinder liner is another essential component of the top end of your engine, and this kit includes a replacement liner that is precisely engineered to fit your Honda TRX 250EX ATV. This liner is made from a durable, heat-resistant material that can withstand the intense pressures and temperatures generated by the engine.

The cylinder head gasket is the final piece of the top end puzzle. It seals the connection between the cylinder head and the engine block, ensuring a proper seal and preventing coolant and oil from mixing. This kit includes a new, high-quality cylinder head gasket that is specifically designed for the 2001-2008 Honda TRX 250EX ATV.

In conclusion, the Namura Atto-Ho374435-81 Top End Rebuild Kit offers a complete solution for restoring the top end of your Honda TRX 250EX ATV's engine to its original performance and efficiency. With high-quality, precision-machined components that are specifically designed for your quad bike, this kit is an essential tool for any serious off-road enthusiast looking to keep their machine in top shape.

Pros and Cons of Buying a NAMURA ATTO-HO374435-81 Top End Rebuild Kit for a 2001-2008 Honda TRX 250EX ATV

The NAMURA ATTO-HO374435-81 Top End Rebuild Kit is designed for the Honda TRX 250EX ATV models produced between 2001 and 2008. This kit includes all the necessary components to rebuild the ATV's top end, such as pistons, rings, cylinder sleeves, and more. In this analysis, we will discuss the potential advantages and disadvantages of purchasing this rebuild kit.

1. Cost-effective: Rebuilding the top end of the engine using a kit like this can save you significant money compared to purchasing a new engine or even a rebuilt one.

2. Customizable: This kit allows you to choose the specific components you need for your particular application, ensuring a perfect fit and optimal performance.

3. Improved performance: A freshly rebuilt top end can lead to improved engine performance, such as increased power and torque, smoother operation, and better fuel efficiency.

4. Increased longevity: By investing in a rebuild kit, you are ensuring the longevity of your engine, as the new components will help prevent future wear and tear.

1. Time-consuming: Rebuilding an engine is a complex process that requires a significant investment of time. Depending on your mechanical skills and experience, this could take anywhere from a few hours to several days.

2. Requires specialized tools: To effectively use this rebuild kit, you will need access to specialized tools and equipment, such as a cylinder hone, crankshaft align boring bar, and a cylinder bore gauge.

3. Potential for errors: Rebuilding an engine involves a high degree of precision, and even small errors can lead to significant problems. If you are not confident in your mechanical abilities, it may be worth considering having the work done by a professional.

4. Potential for unexpected costs: Depending on the condition of your engine and the specific components needed for the rebuild, there may be additional costs beyond the price of the rebuild kit itself.

The NAMURA ATTO-HO374435-81 Top End Rebuild Kit for the 2001-2008 Honda TRX 250EX ATV offers several advantages, such as cost savings, customizability, improved performance, and increased longevity. However, it also comes with some disadvantages, including the time-consuming nature of the rebuild process, the need for specialized tools, the potential for errors, and the possibility of unexpected costs. Ultimately, the decision to purchase this rebuild kit depends on your mechanical abilities, budget, and desired outcome. If you are willing to invest the time and effort, and have the necessary tools and skills, this kit could provide significant value for your ATV. However, if you are unsure or lack the confidence to take on the project yourself, it may be worth considering having the work done by a professional.

part # attoho37443581 price

• $98.75

specifications atvsienna:

• for models: 250ex, Trx
• for makes: Honda
• for years: 2001-2008
• brand: Namura
• manufacturer part number: ATTO-HO374435-81

shipping atvsienna:

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

returns atvsienna:

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

offer atvsienna:

• availability: In Stock
• quantity: 7
• options: Ship-to-home
• started: March 21, 2026
• sold: 0

payments atvsienna:

• other
• credit card: Visa
• wallet: Paypal

general atvsienna:

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

seller atvsienna:

• # reviews: 80671
• rating: 99.9%

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