NAMURA ATTO-PO596395-23 Atv Topend Rebuild Kit 74.47MM

( Brand: Namura ), ( Manufacturer Part Number: ATTO-PO596395-23 )

Review NAMURA Polaris Atv Topend Rebuild Kit 74.47mm fits XPRESS 300 1996–1999

Namura Atto-PO596395-23 Top End Rebuild Kit for Polaris 300 Xpress ATV (1996-1999)

The Namura Atto-PO596395-23 Top End Rebuild Kit is specifically designed for the Polaris 300 Xpress All-Terrain Vehicle models manufactured between 1996 and 1999. This comprehensive kit includes all the necessary components to effectively rebuild the ATV's top end, ensuring optimal engine performance and longevity.

- Piston: The kit comes with a high-quality, forged piston that is precision machined to ensure a perfect fit and proper compression. It is designed to provide excellent strength and durability, reducing the likelihood of engine damage.

- Piston Ring Set: The piston ring set consists of a compression ring, an oil control ring, and two piston rings. These rings are designed to seal the combustion chamber effectively, preventing oil and gas from leaking past the piston.

- Cylinder Kit: The cylinder kit includes a pair of cylinder sleeves, piston rings, and cylinder studs. These components are essential for maintaining the cylinder bore and ensuring proper sealing between the piston and the cylinder wall.

- Crankshaft Seal: The crankshaft seal is a crucial component that prevents engine oil from leaking out of the crankshaft. The Namura kit includes a high-quality crankshaft seal made from a durable material that can withstand the harsh conditions of off-road riding.

- Head Gasket: The head gasket is the seal that separates the combustion chamber from the cooling system. This component is essential for maintaining proper engine compression and cooling. The Namura Atto-PO596395-23 kit includes a new, high-performance head gasket to ensure reliable engine operation.

- Valves and Valve Guides: The kit also includes new valves and valve guides. The valves regulate the flow of air and fuel into the engine, while the valve guides ensure proper alignment and sealing. Replacing these components can help improve engine performance and reduce emissions.

Installing the Namura Atto-PO596395-23 Top End Rebuild Kit requires some mechanical knowledge and skills. The process involves removing the cylinder head, piston, and other related components, and replacing them with the new parts included in the kit. It is recommended to consult the vehicle's service manual for specific instructions and procedures.

The Namura Atto-PO596395-23 Top End Rebuild Kit is an essential investment for any Polaris 300 Xpress ATV owner who wants to keep their vehicle in top condition. This comprehensive kit includes all the necessary components to effectively rebuild the ATV's top end, ensuring optimal engine performance and longevity. With high-quality, precision-machined components and clear installation instructions, this kit is a must-have for any serious off-road enthusiast.

Pros and Cons of Buying a NAMURA ATTO-PO596395-23 1996-1999 Polaris 300 Xpress ATV Top End Rebuild Kit

The NAMURA ATTO-PO596395-23 is a top end rebuild kit specifically designed for the 1996-1999 Polaris 300 Xpress All-Terrain Vehicles. A top end rebuild involves replacing all the engine components above the crankshaft, including pistons, rings, cylinders, and gaskets. In this analysis, we will discuss the advantages and disadvantages of purchasing this rebuild kit.

1. Cost-effective: A rebuild kit is generally more cost-effective than purchasing a new engine or even a used one. This kit allows you to keep your existing engine and restore it to like-new condition.

2. Improved performance: A rebuilt engine will perform better than a worn-out one. The new parts will reduce friction, improve combustion efficiency, and increase power output.

3. OEM parts: The NAMURA ATTO-PO596395-23 is an original equipment manufacturer (OEM) rebuild kit. This ensures that the parts are specifically designed for your Polaris 300 Xpress ATV and will fit perfectly.

4. Easy installation: The kit includes all the necessary parts and instructions for a successful rebuild. This makes the process simpler and more straightforward compared to sourcing individual parts.

1. Time-consuming: A top end rebuild is a complex process that requires a significant amount of time and effort. It may take several days or even weeks to complete the rebuild, depending on your mechanical skills and experience.

2. Labor costs: If you do not have the mechanical skills to perform the rebuild yourself, you will need to hire a professional mechanic. This will add to the overall cost of the project.

3. Potential for errors: A top end rebuild involves many intricate steps, and even a small mistake can cause significant damage. It is essential to follow the instructions carefully and double-check all the work to ensure a successful rebuild.

In conclusion, the NAMURA ATTO-PO596395-23 1996-1999 Polaris 300 Xpress ATV Top End Rebuild Kit offers several advantages, such as cost-effectiveness, improved performance, OEM parts, and easy installation. However, it also comes with some disadvantages, including time-consuming installation, labor costs, and the potential for errors.

If you are mechanically inclined and have the time and resources to perform the rebuild yourself, this kit can be an excellent choice. However, if you are not confident in your mechanical skills or do not have the time to complete the project, it may be more cost-effective to consider other options, such as purchasing a rebuilt engine or even a new ATV. Ultimately, the decision depends on your budget, time constraints, and mechanical abilities.

part # attopo59639523 price

• $115.18

specifications atvsienna:

• for models: 300, Xpress
• for makes: Polaris
• for years: 1996-1999
• brand: Namura
• manufacturer part number: ATTO-PO596395-23

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• # reviews: 69452
• rating: 99.7%

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

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• quantity: 9
• availability: In Stock
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• started: November 6, 2025

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