Description
Product Overview
The Namura NA-50015-4 piston is engineered for high‑performance powersports applications. Constructed from premium aluminum alloy, it balances lightweight characteristics with exceptional strength, reducing reciprocating mass and improving engine response. Measuring 2.59 x 2.59 x 3.14 inches and weighing only 8 ounces, the piston fits precisely into the cylinder bore, minimizing clearance gaps and ensuring optimal compression. The painted exterior not only adds a sleek visual appeal but also provides a protective barrier against moisture and corrosive elements, extending service life. Manufactured by Namura in Taiwan, the component adheres to strict quality standards, reflected in its consistent performance across a range of motorcycles, ATVs, and side‑by‑side vehicles.
Usage
Designed for powersports engines, this piston excels in high‑revving environments where durability and weight savings are critical. It is ideal for sport‑bike enthusiasts, off‑road riders, and professional mechanics performing rebuilds or upgrades. Whether installed in a new build or as a replacement part, the NA-50015-4 delivers reliable power transfer and heat dissipation, supporting aggressive riding styles and demanding terrain. 
Why Choose Us
Namura’s reputation for precision engineering and rigorous testing sets this piston apart from generic alternatives. Each unit undergoes dimensional verification and surface finish inspection to guarantee a flawless fit. The Taiwanese manufacturing facility employs advanced casting techniques and environmentally controlled finishing processes, ensuring uniform material density and consistent coating adhesion. Customers benefit from Namura’s extensive warranty support and a network of authorized service centers, providing peace of mind and easy access to genuine replacement parts.
Key Features
- High‑grade aluminum alloy reduces weight while maintaining strength
- Precision‑machined dimensions ensure perfect cylinder fit
- Painted finish offers corrosion resistance and visual appeal
- Compact size (2.59 x 2.59 x 3.14 in) fits a wide range of powersports engines
- Manufactured in Taiwan under strict quality control standards
FAQ
Is this piston compatible with all powersports engines?
The NA-50015-4 is designed for specific models listed in Namura’s catalog. Verify your engine’s bore size and clearance specifications before purchase.
Can I install the piston myself?
Yes, with basic mechanical tools and a service manual. Ensure proper torque settings and use a compatible piston ring set for optimal performance.
What is the warranty period?
Namura provides a one‑year limited warranty covering manufacturing defects when installed according to the recommended procedures.
Does the painted coating affect heat dissipation?
The coating is thin and formulated to allow efficient heat transfer while protecting the metal surface from corrosion.
Are replacement rings included?
No, the piston is sold without rings. It is recommended to purchase a matching ring set from Namura for best results.




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