NAMURA NA-40002K Top End Repair Kit 65.94MM

( Brand: Namura ), ( Manufacturer Part Number: NA-40002K ), ( Warranty Details: See Manufacturer )

Review NAMURA Top End Repair Kit 65.94mm Yamaha fits BLASTER YFS200 1988–2006

Introducing the Namura NA-40002K Top End Repair Kit, specifically designed for the Yamaha YFS200 Blaster snowmobile models manufactured between 1988 and 2006. This comprehensive repair kit contains all the essential components needed to refurbish the top end of your snowmobile engine, ensuring optimal performance and longevity.

The kit includes a set of high-quality piston rings, comprising of a compression ring, two oil control rings, and an oil scraper ring. These rings are precision engineered to provide a perfect seal within the cylinder bore, reducing blow-by and minimizing engine oil consumption.

Moreover, the Namura NA-40002K Top End Repair Kit comes with a complete set of piston pins and piston pin bushings. These components are crucial for the proper function of the piston as they facilitate the transfer of power from the crankshaft to the piston. The new bushings ensure a snug fit, reducing piston slop and improving engine efficiency.

Additionally, the kit features a set of new cylinder head gaskets, designed to seal the combustion chamber effectively and prevent coolant and oil from mixing. This gasket set guarantees a perfect seal between the cylinder head and engine block, ensuring a leak-free operation.

Furthermore, the Namura NA-40002K Top End Repair Kit includes a set of valve guides and valve seat inserts. These components are vital for the proper functioning of the engine's valves, as they ensure a precise fit and proper sealing. The new guides and inserts will help prolong the life of the valves and improve engine performance.

Lastly, the kit includes a set of new valve springs and valve spring retainers. These components are essential for maintaining proper valve clearance and ensuring that the valves function correctly during engine operation. The new springs and retainers will help improve engine performance and extend the life of the valves.

In summary, the Namura NA-40002K Top End Repair Kit is an essential tool for any Yamaha YFS200 Blaster snowmobile owner. This comprehensive kit contains all the necessary components to refurbish the top end of your engine, ensuring optimal performance and longevity. By investing in this repair kit, you can save yourself the cost and inconvenience of an engine rebuild and enjoy many more seasons of snowmobiling.

The Namura NA-40002K Top End Repair Kit is designed for Yamaha YFS200 Blaster snowmobiles manufactured between 1988 and 2006. Here are some pros and cons that may help you decide if this repair kit is a good investment for your machine.

1. Comprehensive repair kit: The NA-40002K includes various parts required for top end repair such as piston, rings, gaskets, valves, and seals. This eliminates the need to order individual parts and saves both time and money.

2. OEM quality: Namura is a well-known aftermarket manufacturer that produces parts to Original Equipment Manufacturer (OEM) specifications. This ensures a proper fit and reliable performance.

3. Cost-effective: Repairing a snowmobile engine instead of buying a new one can save a significant amount of money, especially for older models. This repair kit offers an affordable solution for those looking to get their Blaster back on the trails.

4. Easy installation: The kit comes with detailed instructions, making the installation process relatively straightforward for those with basic mechanical skills.

1. Not suitable for major engine overhauls: This repair kit is intended for top end repairs only. For more extensive engine work, additional components may be required.

2. Availability: Since this is an aftermarket repair kit, it may not be readily available at local dealerships. Ordering online might be necessary, which could lead to a longer wait time.

3. Potential for user error: Improper installation of the kit's components could result in engine damage or reduced performance. It is essential to follow the instructions carefully and ensure a proper fit.

In conclusion, the Namura NA-40002K Top End Repair Kit is an excellent investment for those looking to repair their Yamaha YFS200 Blaster's engine. Its comprehensive nature, OEM quality, and cost-effectiveness make it an attractive option for snowmobile enthusiasts. However, it is essential to keep in mind that this kit is intended for top end repairs only, and for major engine overhauls, additional components may be necessary. Additionally, users must install the kit correctly to ensure optimal performance, which may require some mechanical skills.

If you have a Yamaha YFS200 Blaster with a worn-out top end, the Namura NA-40002K Top End Repair Kit is a worthwhile investment. Its OEM quality and comprehensive nature make it an affordable and reliable solution for returning your machine to its former glory. However, always ensure that you follow the installation instructions carefully to avoid any potential issues.

part # na40002k prices

• $79.84-$91.76

specifications atvsienna:

• for models: Yfs200, Blaster
• for makes: Yamaha
• for years: 1988-2006
• brand: Namura
• manufacturer part number: NA-40002K
• warranty details: See Manufacturer

shipping atvsienna:

• class: Standard
• type: Fixed
• service: UPS Ground
• cost: $0.00
• carrier: UPS
• transit: 2-4 Days

seller atvsienna:

• # reviews: 700705
• rating: 99.8%

offer atvsienna:

• options: Ship-to-home
• availability: In Stock
• started: April 14, 2026
• sold: 0
• quantity: 2

general atvsienna:

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

returns atvsienna:

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

payments atvsienna:

• wallet: Google-pay
• credit card: Mastercard
• other

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