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Namura Top End Piston Rebuild Kit 66.35mm STD Bore 10.9:1
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Top End Rebuild Kit|SKU #NX-40025K-672

Namura Top End Piston Rebuild Kit 66.35mm STD Bore 10.9:1

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    Additional Note

    Namura's Top End kit is ideal for replacing worn parts and making some upgrades. Machined Smooth heads, available for certain models, can increase horsepower and fuel economy while reducing carbon buildup.

    Description

    Namura Top end kits are made of high-quality components especially the MOS2 (Teflon/Molybdenum) coated skirts that is 10x stronger than other coatings! Namura top end kits also use a hypereutectic casting process, that provides higher silicon content for reduced expansion rates and additional wear resistance; it also has an ability to withstand higher cylinder temperatures.


    Features

    • Top End kit includes: piston, rings, wrist pin, clips, top end bearing, and gasket kit
    • MOS2 (Teflon/Molybdenum) Coated Skirts - A rolled on application process provides a bond that is 10 times stronger than other spray on coatings. 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 the piston. Some tests have shown this feature can increase horsepower and fuel economy by up to 6%
    • Anodized Domes - Increases heat resistance and durability; pistons with anodized domes are 75% stronger than non-anodized pistons
    • Hypereutectic Casting Process - Provides higher silicon content for reduced expansion rates and additional wear resistance; it also has an ability to withstand higher cylinder temperatures
    • Piston Size: 66.35mm

    Specifications

    Condition
    New
    SKU#
    NX-40025K-672
    Part
    Top End Rebuild Kit
    Engine Type
    2-Stroke
    Piston Type
    Cast
    Piston Diameter
    66.35 mm
    Compression Ratio
    10.9:1

    Vehicle Compatibility

    Search to verify this part fits your vehicle

    Year:2001
    Make:Yamaha
    Model:YZ250
    Action:View
    Year:2000
    Make:Yamaha
    Model:YZ250
    Action:View
    Year:1999
    Make:Yamaha
    Model:YZ250
    Action:View

    Brand Details

    Namura Technologies™ manufactures a wide array of pistons, gaskets, rings, and bearings for the powersports industry. By using the latest technology and manufacturing techniques Namura™ is able to make superior components for most makes and models without raising their prices enormously. If you want an OE fit but with additional features and a more competitive price point, then you want Namura Top End Piston Rebuild Kit 66.35mm STD Bore 10.9:1 from Namura™.

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    Namura Top End Piston Rebuild Kit 66.35mm STD Bore 10.9:1