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Top End Rebuild Kit|SKU #NA-40010K-672
Namura Top End Piston Rebuild Kit 99.97mm STD Bore 9.2:1
$176.32$196.38
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Description
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.
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: 99.97mm
Specifications
Condition
New
SKU#
NA-40010K-672
Part
Top End Rebuild Kit
Engine Type
4-Stroke
Piston Type
Cast
Piston Diameter
99.97 mm
Compression Ratio
9.2:1
FitmentYamaha Grizzly 660 4x4 IRS YFM660FA, YFM660FG, YFM660F, Rhino 660 4x4 YXR660FA, YXR660FAEX Exploring Edition, YXR660FDU Ducks Unlimited Edition, YXR660FSE Special Edition, YXR660FSP Sport Edition, YXR660FASE Special Edition
Vehicle Compatibility
Search to verify this part fits your vehicle
Year
Make
Model
Action
2004
Yamaha
Grizzly 660 4x4 IRS YFM660F
2003
Yamaha
Grizzly 660 4x4 IRS YFM660F
2008
Yamaha
Grizzly 660 4x4 IRS YFM660FA
2005
Yamaha
Grizzly 660 4x4 IRS YFM660FA
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 99.97mm STD Bore 9.2:1 from Namura™.
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