NAMURA NX-20085-B Piston Kit, B Series

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

The NAMURA NX-20085-B Piston Kit is a B Series replacement component designed for powersports and small-engine applications requiring dependable piston performance. Manufactured under the NAMURA brand, this kit provides a practical solution for replacing a worn, damaged, or service-aged piston during an engine rebuild or top-end repair. The B Series designation and exact part number help simplify product identification when matching replacement parts to an existing engine assembly.
Use the NAMURA NX-20085-B as part of a carefully planned engine service. A properly selected piston kit can help restore reliable compression, support consistent combustion, and contribute to smooth engine operation when installed with compatible components. Before ordering or installation, compare the part number with the original equipment requirements and confirm application compatibility, piston design, cylinder condition, and any required clearance specifications. Always follow the engine manufacturer’s service procedures and use suitable assembly practices for the application.
Supplied as a kit, the NAMURA NX-20085-B is intended to support efficient replacement work while helping keep related service components organized. Inspect the cylinder, piston, rings, pin, clips, and connecting-rod assembly as applicable to the specific engine before final installation. Additional components or installation hardware may be required depending on the application and the condition of the existing engine parts. For best results, verify all