NAMURA TECHNOLOGIES NX-40025-B Piston Kit Standard 66.36MM 66.40MM

( Brand: Namura Technologies ), ( Manufacturer Part Number: NX-40025-B ), ( Part Type: Piston )

Review NAMURA TECHNOLOGIES Size 66.36mm Piston Kit Yamaha Standard Bore 66.40mm fits YZ250

Introducing the Namura NX-40125-B 66.36mm Piston Kit, specifically designed for Yamaha YZ250 Standard models with a bore size of 66.40mm. This piston kit is an excellent choice for riders looking to upgrade their engine performance or replace worn-out components.

The Namura piston kit is meticulously crafted using high-quality materials to ensure superior durability and reliability. The piston itself is made from forged aluminum alloy, which offers excellent strength and rigidity. The piston crown is precision-machined to provide optimal compression and power delivery.

The piston kit also includes a new ring set, consisting of a compression ring, two oil control rings, and a skirt oil control ring. These rings are carefully manufactured to ensure a perfect seal and minimize friction, resulting in improved engine efficiency and longer ring life.

The piston kit comes with a piston pin and a piston pin retaining clip. The piston pin is made from high-tensile steel and is precision-machined to ensure a snug fit in the piston. The retaining clip is designed to securely hold the piston pin in place, preventing it from coming loose during operation.

The Namura NX-40125-B 66.36mm Piston Kit is a direct replacement for the stock piston and ring set on a Yamaha YZ250 Standard with a bore size of 66.40mm. Installation is straightforward and can be completed with common hand tools, making it a great option for DIY enthusiasts.

Upgrading to the Namura NX-40125-B 66.36mm Piston Kit offers numerous benefits, including increased horsepower, improved torque, and enhanced engine responsiveness. It is essential for riders who demand the best performance from their Yamaha YZ250 Standard.

In conclusion, the Namura NX-40125-B 66.36mm Piston Kit is an excellent investment for any Yamaha YZ250 Standard rider looking to enhance their engine performance and durability. With high-quality materials, precise manufacturing, and easy installation, this piston kit is a must-have for any serious off-road enthusiast.

Pros and Cons of buying a Namura NX-40025-B Piston Kit for a Yamaha YZ250 Standard

The Namura NX-40025-B piston kit is designed to fit the Yamaha YZ250 Standard motorcycle. This piston kit offers an upgrade for those looking to enhance their bike's performance or replace worn-out parts. In this analysis, we will discuss the potential advantages and disadvantages of purchasing this piston kit.

1. Enhanced Performance: The Namura piston kit is designed to provide better combustion efficiency and power output compared to the stock piston. This can result in improved acceleration and top speed.

2. Durability: The piston kit is made of high-quality materials, ensuring a longer lifespan than the stock piston. This can save money in the long run by reducing the frequency of replacements.

3. Customizability: The piston kit comes in various sizes to accommodate different riding styles and track conditions. This allows riders to tailor their bike's performance to their specific needs.

1. Cost: The Namura piston kit is more expensive than the stock piston. While the long-term savings from reduced replacement frequency may offset the initial cost, some riders may not be willing to pay the premium upfront.

2. Installation Complexity: Installing the piston kit requires a high level of mechanical skill and knowledge. Improper installation can lead to engine damage and compromise the performance benefits.

3. Compatibility: The Namura piston kit is only compatible with the Yamaha YZ250 Standard. Riders with other motorcycle models will need to look for alternative solutions.

The Namura NX-40025-B piston kit offers several advantages, such as enhanced performance, durability, and customizability, making it an attractive option for those seeking to upgrade their Yamaha YZ250 Standard. However, the higher cost, installation complexity, and limited compatibility are potential drawbacks that should be considered before making a purchase.

If you are a skilled mechanic or willing to pay for professional installation, and you ride a Yamaha YZ250 Standard, the Namura NX-40025-B piston kit could be an excellent investment for improved engine performance and longevity. However, if you are unsure about your mechanical abilities or prefer a more budget-friendly option, it may be worth considering alternative piston kits or stock replacement options.

Details:

Namura, 66.36mm Piston Kit, Bore: 66.36mm, Sizing: Standard Bore, Compression: 10.9:1 Compression, Sold as: Each. Any damage claims may be exchanged for the identical item only.

part #: nx40025 prices

• $68.44-$96.86

specifications pistondon:

• for models: Yz250
• for makes: Yamaha
• brand: Namura Technologies
• mpn: Nx-40025-b
• part type: Piston

shipping pistondon:

• type: Fixed
• transit: 4-9 Days
• class: Economy, Standard, Expedited
• cost: $0.00
• service: Economy, Standard, Expedited

general pistondon:

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

seller pistondon:

• city: Loudon, Tennessee
• # reviews: 575273
• rating: 98.9%

payments pistondon:

• other
• wallet: Paypal
• credit card: Discover

offer pistondon:

• options: Ship-to-home
• started: June 29, 2025
• quantity: 1
• sold: 0
• availability: In Stock

returns pistondon:

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

Namura Technologies NX-40025 Is Similar To:

• Namura Technologies Nx-40080-4os 040 Over Bore Piston Kit For Yamaha 1993-2001 Yz80 48mm (63.3% similar) Manufactured by Namura. Made in Taiwan. Kit is for .040 over bore size - 48.00MM. Compression ratio of 8.2:1. Piston dome is anodized for superior heat resistance and longer lifespan. Piston is 47.95MM. Compatible with yamaha model's below: 1993 YZ80. Kit includes piston, rings, pin...(August 11th, 2024)
• Namura Technologies Nx-30000-c Piston Kit Standard Bore 53.96mm (71.8% similar) Bore: 53.96MM, sizing: standard bore, MOS2 made with Teflon /molybdenum coated skirts - a rolled on application process provides a fits bond...(August 12th, 2024)
• Namura Technologies Nx-30004 Size A 53.94mm Piston Kit For Suzuki 2001-2003 Rm125 Standard Bore 54mm (72.3% similar) Benefits include increased heat transfer, reduced friction and helping to eliminate cold seizures. Some tests have shown this feature can increase horsepower and fuel economy by up to 6%. Machined smooth heads - reflects combustion heat and reduces carbon buildup, protecting the top of piston...(August 12th, 2024)
• Namura Technologies Nx-30025-b Piston Kit Standard Bore 66.95mm (78.2% similar) Anodized domes - increases heat resistance and durability; pistons with anodized domes are 75% stronger than non-anodized. Machined smooth heads...(August 13th, 2024)
• Namura Technologies Fx-40049-c (43% similar) Benefits include increased heat transfer, reduced friction and helping to eliminate cold seizures. Machined smooth heads - reflects combustion heat and reduces carbon buildup, protecting the top of piston. Anodized domes - increases heat resistance and durability; pistons with anodized domes are...(August 13th, 2024)
• Namura Technologies Nx-10080-2r Nx 10080 2 Pistons All Have Molybdenium Skirt (50% similar) For kits, photo might show entire kit and listing is only for one component. All Namura pistons have super-high,:: Namura pistons. Note: photos do not always represent the actual product. All Namura pistons have anodized domes that provide superior heat resistance...(August 13th, 2024)
• Namura Orna-ra418207-gs 2004 Honda Cr125 Dirt Bike Piston Rings 53.95mm (40.7% similar) I need to exchange an item. Parts without fitment are to be assumed universal and may require vehicle modification. 2004 Honda CR125 dirt bike Namura piston rings 53.95MM: ring set contains: ring to match a single piston.: brand: Namura, model number: ORAN-RA418207-GS...(August 13th, 2024)
• Namura Nx-10051-2k Top End Repair Kit 0.50mm 39.5mm 10.0 1 Honda Z50r crf50f xr50r (31.2% similar) Everything for a top end rebuild in one box. Comes with enough components to service one engine. Namura top end repair kit 0.50MM 39.5MM 10.0:1 Honda Z50R/CRF50F/XR50R: top-end repair kit can help improve the performance of your ride and keeping it running in peak condition...(August 14th, 2024)
• Namura Orna-ra418127-gs 2001-2002 Kawasaki Kx125 Dirt Bike Piston Rings 53.94mm (40% similar) Compatibility: Husqvarna Cr 125 1998 - 2010 , 2012 2013 , wry 2007 , 2009 Honda CR125R 2004 2007 , Kawasaki KX125 2005 , Suzuki RM125 1989 yamaha YZ125 2014 .: brand: Namura, model number: ORAN-RA418127-GS. Parts without fitment are to be assumed universal and may require vehicle...(August 14th, 2024)
• Namura Technologies Nx-30016-b Piston Kit For Engine Pistons Kits Aw (54.1% similar) Namura NX-30016-B piston kit for engine pistons kits aw: status: in stock...(August 15th, 2024)
• Namura Technologies Nx-20013-b Piston Kit Standard Bore 48.46mm (74.4% similar) Bore: 48.46MM, sizing: standard bore, MOS2 made with Teflon /molybdenum coated skirts - a rolled on application process provides a fits bond that is 10 times stronger than other spray coatings. Actual product may differ from the item shown in photograph. Benefits include increased heat...(August 15th, 2024)