NAMURA NA-40005-4 Piston Big Wheel 1.00MM

( Brand: Namura ), ( Manufacturer Part Number: NA-40005-4 ), ( Type: Piston ), ( Items Included: Piston Rings, Wrist Pin ), ( Piston Diameter: 83.95 Mm )

Review NAMURA Motorcycle 1.00mm Piston For Yamaha Big Wheel fits BW350 350 1987–1988

Introducing the Namura NA-4005-4 1.00mm piston, an essential replacement component for Yamaha Big Wheel 350 BW350 motorcycles manufactured between 1987 and 1988. This piston is specifically designed to ensure optimal engine performance and reliability, making it an excellent choice for those seeking to keep their classic Yamaha motorcycle in top condition.

The NA-4005-4 piston boasts a precise diameter of 1.00mm, ensuring a snug fit within the engine cylinder. Its high-quality forged construction guarantees exceptional strength and durability, capable of withstanding the rigors of regular use. The piston's superior heat dissipation properties are attributed to its state-of-the-art design, which includes a finned surface that aids in the efficient transfer of heat away from the combustion chamber.

Moreover, the NA-4005-4 piston is engineered with a ring groove that accommodates piston rings, contributing to the efficient compression and sealing of the engine. The piston's ring lands are designed with precise dimensions to ensure proper ring engagement, leading to improved combustion efficiency and enhanced power output.

The surface finish of the NA-4005-4 piston is meticulously crafted through a rigorous honing process, ensuring a smooth and uniform surface that minimizes friction and enhances engine longevity. Furthermore, the piston's skirt is designed with a gentle taper that facilitates smooth piston reciprocation, reducing engine wear and tear.

In summary, the Namura NA-4005-4 1.00mm piston is an exceptional replacement component for Yamaha Big Wheel 350 BW350 motorcycles from the 1987 and 1988 model years. With its precise dimensions, high-quality forged construction, efficient heat dissipation properties, and meticulously crafted surface finish, this piston guarantees optimal engine performance and reliability for your classic Yamaha motorcycle.

Considerations and Recommendation for Buying a Namura NA-40005-4 1.00mm Piston for a Yamaha Big Wheel 350 (1987-1988)

The Namura NA-40005-4 1.00mm piston is a replacement part designed for Yamaha Big Wheel 350 motorcycles manufactured between 1987 and 1988. This piston is an aftermarket option, which can be beneficial for various reasons.

a. Cost-effective: Aftermarket pistons like the Namura NA-40005-4 can be more affordable compared to OEM (Original Equipment Manufacturer) alternatives.

b. Availability: Aftermarket parts are often easier to find and purchase than OEM parts, allowing for quicker repair or replacement.

c. Customization: Aftermarket parts may offer additional features or options not available from OEM manufacturers.

a. Quality concerns: Aftermarket parts may not always meet the same quality standards as OEM parts. In some cases, this could lead to reduced performance or reliability.

b. Compatibility issues: Ensure the aftermarket piston is compatible with your specific motorcycle model and year to avoid potential issues.

c. Warranty: OEM parts often come with a factory warranty, which may not be available for aftermarket parts.

The decision to buy a Namura NA-40005-4 1.00mm piston for your Yamaha Big Wheel 350 (1987-1988) depends on your priorities. If cost and availability are your main concerns, an aftermarket piston like the Namura NA-40005-4 could be a suitable choice. However, if you value the highest quality and warranty coverage, an OEM piston may be the better option.

Before making a decision, consider researching both the Namura NA-40005-4 aftermarket piston and OEM alternatives. Read customer reviews, consult motorcycle forums, and contact the seller or manufacturer for any questions or concerns. Ultimately, the choice between an aftermarket and OEM piston comes down to your budget, preference for customization, and desired level of quality and warranty coverage.

Details:

All components are manufactured to OE-specs. Combined shipping is available for multiple items. CRU Products was started by Cycles R Us in 2009. Product Features Anodized piston head increases strength and heat dissipation.

Fits:Make: model: Year: Yamaha Big Wheel 350 BW. Specifications: Part: Piston, Size: 83.95mm, Oversize: 1.00 Piston Type: Cast. MOST Namura pistons feature a machined head which helps reduce carbon build-up and reflect heat. Shipping: Items are shipped within a timely manner.

part #: na400054 prices

• $72.48-$80.71

specifications pistondon:

• for models: Bw350, 350
• for makes: Yamaha
• for years: 1987-1988
• brand: Namura
• mpn: Na-40005-4
• type: Piston
• items included: Piston Rings, Wrist Pin
• piston diameter: 83.95 Mm

seller pistondon:

• rating: 99.9%
• # reviews: 116735
• city: Chippewa Lake, Ohio

shipping pistondon:

• type: Fixed
• cost: $0.00
• service: Standard
• transit: 5-8 Days
• class: Standard

general pistondon:

• condition: New
• Motorcycle Scooter Parts Accessories > Engines Engine Parts > Pistons, Rings Piston Kits

payments pistondon:

• credit card: Mastercard
• other
• wallet: Apple-pay

returns pistondon:

• time: 30 Days
• paid by: Seller
• policy: Returns Accepted

offer pistondon:

• availability: In Stock
• quantity: 4
• options: Ship-to-home
• started: May 16, 2026
• sold: 0

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