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.
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Namura Top End Piston Rebuild Kit 72.45mm +1.5 OB 8.7:1 NA-40015-6K-672
Top End Rebuild Kit | SKU #NA-40015-6K-672 | MPN #NA-40015-6K
$97.08
- New Part
Average free shipping time to your home 2-4 daysContact us for a question. Phone: (304) 699-7572
Availability: IN STOCK
- GA1
- TX1
Specifications
| Condition | New |
| SKU# | NA-40015-6K-672 |
| MPN# | NA-40015-6K |
| Part | Top End Rebuild Kit |
| Engine Type | 4-Stroke |
| Piston Type | Cast |
| Piston Diameter | 72.45 mm |
| Compression Ratio | 8.7:1 |
Vehicle Compatibility
This part fits an additional 29 vehicles.Please use the search box above to find your vehicle.
| Year | Make | Model | Submodel |
|---|---|---|---|
| Yamaha | Bear Tracker 250 | Bear Tracker 250 YFM250X | |
| Yamaha | Bear Tracker 250 | Bear Tracker 250 YFM250B |
Description
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.
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
- NA-40015 Series Does Not have machine smooth dome
- 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: 72.45mm
- Images are for reference purposes only
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