NAMURA NA-40005 Piston Big Wheel

( Brand: Namura ), ( Manufacturer Part Number: NA-40005 ), ( Type: Piston ), ( Items Included: Piston Rings, Wrist Pin ), ( Piston Diameter: 82.95 Mm )

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

Introducing the Namura NA-40005 Standard Piston, specifically designed for the Yamaha Big Wheel 350 (BW350) model motorcycles manufactured between 1987 and 1988. This high-quality piston is engineered to deliver optimal performance and reliability for your classic Yamaha machine.

The NA-40005 Standard Piston is meticulously crafted using premium materials. Its forged construction ensures superior strength and durability, enabling it to withstand the rigors of regular use. The piston's top ring groove is precisely machined to ensure perfect ring seating, resulting in effective compression and efficient combustion.

This piston features a standard dome shape, which is suitable for most applications. Its skirt length is optimally designed to minimize frictional losses, ensuring smooth power delivery. The piston also includes a piston pin bore that is accurately sized to ensure a snug fit and proper engagement with the connecting rod.

The NA-40005 Standard Piston is designed to be a direct replacement for the original equipment manufactured (OEM) piston. It comes with a piston pin and piston pin retaining clip, making it a complete kit for an easy installation process. The piston is also coated with a thermal barrier coating that helps protect against detonation and prevents the piston from overheating.

In summary, the Namura NA-40005 Standard Piston is an ideal choice for Yamaha Big Wheel 350 (BW350) owners looking to upgrade their piston for improved performance and reliability. Its high-quality construction, precise machining, and inclusion of necessary hardware make it a top-tier replacement option for your classic motorcycle.

The Namura NA-4005 STD piston is a replacement option for the Yamaha Big Wheel 350 (models BW350) from the years 1987 and 1988. Let's examine the potential advantages and disadvantages of purchasing this piston.

1. Availability: Aftermarket pistons like the Namura NA-4005 STD can be more readily available than OEM (original equipment manufacturer) alternatives, making it easier to find a replacement when needed.

2. Cost-effective: Aftermarket pistons, in general, tend to be more affordable than their OEM counterparts.

3. Customization: Aftermarket options often provide more choices, including various materials, sizes, and designs, allowing riders to tailor their engine to their specific needs or preferences.

1. Quality concerns: Some aftermarket parts may not meet the same quality standards as OEM parts, potentially leading to issues such as premature wear, failure, or decreased performance.

2. Compatibility: It is essential to ensure that the aftermarket piston is compatible with your specific engine model and year. In this case, the Namura NA-4005 STD is designed for the Yamaha Big Wheel 350, but double-checking the compatibility is still important.

3. Warranty: OEM parts typically come with a manufacturer's warranty, while aftermarket parts may not offer the same level of protection.

The Namura NA-4005 STD piston can be a viable option for those seeking a replacement for their Yamaha Big Wheel 350 (models BW350) from 1987 and 1988. Its availability, cost-effectiveness, and customization possibilities are advantages. However, potential concerns include quality, compatibility, and the lack of a warranty compared to OEM parts.

Before making a purchase, it is essential to thoroughly research the aftermarket piston and the seller to ensure its compatibility and quality. Check reviews from other customers, consult with experts, and verify the seller's reputation to minimize the risk of receiving a subpar product. If possible, consider purchasing from a trusted aftermarket parts supplier or a reputable dealer to increase the likelihood of a satisfactory experience.

Details:

Shipping: Items are shipped within a timely manner. Combined shipping is available for multiple items. CRU Products was started by Cycles R Us in 2009. Fits:Make: model: Year: Yamaha Big Wheel 350 BW.

MOST Namura pistons feature a machined head which helps reduce carbon build-up and reflect heat. All components are manufactured to OE-specs. Product Features Anodized piston head increases strength and heat dissipation. Specifications: Part: Piston, Size: 82.95mm, Oversize: Std, Piston Type: Cast.

part #: na40005 prices

• $67.36-$90.55

specifications pistondon:

• for models: Bw350, Std, 350
• for makes: Yamaha
• for years: 1987-1988
• brand: Namura
• mpn: Na-40005
• type: Piston
• items included: Piston Rings, Wrist Pin
• piston diameter: 82.95 Mm

payments pistondon:

• credit card: Discover
• other
• wallet: Paypal

shipping pistondon:

• transit: 3-8 Days
• cost: $0.00
• type: Fixed
• class: Standard
• service: Standard

offer pistondon:

• options: Ship-to-home
• sold: 0
• availability: In Stock
• quantity: 4
• started: May 18, 2026

seller pistondon:

• rating: 99.9%
• city: Chippewa Lake, Ohio
• # reviews: 116906

general pistondon:

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

returns pistondon:

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

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