NAMURA TECHNOLOGIES NA-40007-4R Piston Kit 758891086152 96MM

( Brand: Namura Technologies ), ( Manufacturer Part Number: NA-40007-4R ), ( Type: Auto ), ( UPC: 758891086152 )

Review NAMURA TECHNOLOGIES Na-40007-4 96mm Piston Kit For Yamaha fits YZ 250 1998–2002

Introducing the Namura NA-40007-4R/NA-40007-4 piston kit, specifically designed for Yamaha YZ 250 motorcycles manufactured between 1998 and 2002. This high-performance piston kit is an excellent upgrade for riders seeking improved power and efficiency from their engine.

The NA-40007-4R pistons are forged from a high-strength aluminum alloy, ensuring superior durability and longevity. The piston crowns are engineered with a domed shape and a precise compression height, optimizing combustion efficiency and increasing power output. The piston skirts feature a state-of-the-art coating, which reduces friction, minimizes scuffing, and ensures a smooth engine operation.

The NA-40007-4 pistons are designed to work in conjunction with the NA-40007-4 rings. These rings are made from a high-quality material that offers superior ring seal and reduced engine wear. The top compression ring is designed with a narrow, tapered groove, ensuring a proper fit and reducing the likelihood of ring drag. The second compression ring and the oil control ring are designed with wider grooves, providing better oil control and improved engine performance.

This piston kit is also compatible with the stock Yamaha YZ 250 connecting rods, making it a straightforward upgrade for most riders. The pistons are precisely machined to ensure a perfect fit, and they come with new piston pins and piston pin bushings.

In summary, the Namura NA-40007-4R/NA-40007-4 piston kit is an excellent upgrade for Yamaha YZ 250 motorcycles produced between 1998 and 2002. With forged aluminum pistons, high-quality rings, and a smooth, efficient engine operation, this piston kit delivers improved power, better combustion efficiency, and increased longevity.

Pros and Cons of Buying a Namura NA-40007-4R/NA-40007-4 96mm Piston Kit for Yamaha YZ 250 (1998-2002)

a. Performance Upgrade: The piston kit promises increased power and torque, which can result in improved performance for your Yamaha YZ 250.

b. OEM Quality: Namura is a well-known aftermarket manufacturer known for producing high-quality pistons. This kit is designed specifically for the Yamaha YZ 250 model, ensuring a perfect fit.

c. Durability: The piston kit is made from forged material, which is stronger and more durable than cast pistons. This can help extend the life of the engine and reduce the need for frequent replacements.

d. Cooling Efficiency: The 96mm piston size can help improve cooling efficiency, especially in high-performance applications.

a. Cost: The piston kit can be quite expensive compared to OEM or other aftermarket options. This may be a significant investment for some riders.

b. Installation Complexity: Installing the piston kit requires a high level of expertise and experience. It is recommended to have the kit installed by a professional mechanic to ensure proper fitment and function.

c. Potential Power Increase: While the piston kit promises increased power, it may also result in unwanted side effects such as increased engine vibration or noise. This can be a concern for some riders.

The Namura NA-40007-4R/NA-40007-4 96mm piston kit for the Yamaha YZ 250 (1998-2002) can provide significant performance upgrades, improved durability, and enhanced cooling efficiency. However, the high cost and installation complexity may be a deterrent for some riders. Ultimately, the decision to purchase this kit depends on your budget, technical expertise, and desired performance enhancements for your Yamaha YZ 250.

If you are an experienced rider with a good mechanical background and a significant budget for performance upgrades, the Namura NA-40007-4R/NA-40007-4 96mm piston kit may be an excellent investment for your Yamaha YZ 250. Alternatively, if you are unsure about the installation process or have limited resources, it may be best to consider other performance upgrades or opt for a less expensive aftermarket piston kit.

Details:

May not be accurate. This item comes with the full manufacturers warranty. The compatibility section is not always 100% accurate.

The color, quantity, size, etc. Fast Free, Shipping: Brand Namura, Part Number NA-40007-4, UPC Code 2, Condition New.

part #: na400074r prices

• $76.19-$86.58

specifications pistondon:

• for models: Yz, 250
• for makes: Yamaha
• for years: 1998-2002
• brand: Namura Technologies
• mpn: Na-40007-4r
• type: Auto
• upc: 758891086152

shipping pistondon:

• cost: $0.00
• class: Standard
• service: Standard
• transit: 3-5 Days
• type: Fixed

returns pistondon:

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

payments pistondon:

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

offer pistondon:

• availability: In Stock
• quantity: 1
• started: May 20, 2025
• options: Ship-to-home
• sold: 0

seller pistondon:

• # reviews: 10378
• rating: 99.0%
• city: Flat Rock, North Carolina

general pistondon:

• Motorcycle Scooter Parts Accessories > Engines Engine Parts > Pistons, Rings Piston Kits
• condition: New

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