NAMURA NX-40005-4 Scooter Piston Towny 1.00MM QT50

( Brand: Namura ), ( Manufacturer Part Number: NX-40005-4 ), ( Type: Piston ), ( Items Included: Piston Rings, Wrist Pin ), ( Piston Diameter: 40.96 Mm )

Review NAMURA Scooter 1.00mm Piston For Yamaha Towny 50 fits 1979–1987

Introducing the Namura NX-40005-4 scooter piston, a high-performance replacement part designed specifically for Yamaha QT50 models produced between 1979 and 1987, as well as for the Towny 50 motorbikes from 1982. This piston is a must-have for those seeking to improve the power and efficiency of their engines.

Manufactured with exceptional precision, this 1.00mm oversized piston boasts a superior-grade aluminum alloy construction. The material's high strength-to-weight ratio ensures optimal engine performance while minimizing the overall weight of the piston. The oversized design increases the piston's surface area, allowing for improved heat dissipation and enhanced combustion efficiency.

The piston's ring grooves have been meticulously engineered to accommodate top-quality piston rings. These rings help to reduce piston-to-cylinder friction, ensuring a smoother, quieter engine operation. The design also allows for efficient sealing, reducing the risk of oil leaks and combustion losses.

The piston's crown profile has been carefully contoured to optimize the combustion process. The crown's unique shape enhances the volumetric efficiency of the engine, enabling it to extract more power from the fuel mixture. Moreover, the piston's skirt is designed with a generous radius to minimize the contact area between the piston and the cylinder wall, reducing friction and wear.

The Namura NX-40005-4 piston comes with a sleeved piston pin that ensures a secure connection between the piston and the crankshaft. The pin's precision machining and durable steel material provide excellent strength and durability, ensuring a long service life.

With this replacement piston, riders can expect improved engine performance, enhanced power output, and increased fuel efficiency. The Namura NX-40005-4 piston is a worthwhile investment for those seeking to upgrade their Yamaha QT50 or Towny 50 engines and take their riding experience to the next level.

Buying a Namura NX-40005-4 piston for a Yamaha QT50, model years 1979-1987, Towny 50, and 1982, can be a consideration for those in need of a replacement part. Here are some potential pros and cons:

1. OEM Compatibility: The Namura NX-40005-4 piston is designed to fit the Yamaha QT50, ensuring a proper fit and function.

2. Quality: Namura is a reputable manufacturer known for producing high-quality aftermarket parts. This piston is likely to offer reliable performance.

3. Cost-effective: Buying an aftermarket piston from a trusted manufacturer like Namura can be more cost-effective than purchasing an original equipment manufacturer (OEM) part.

4. Availability: Aftermarket parts like this piston are often more readily available than OEM parts, allowing for quicker turnaround times.

1. Potential for Variability: Aftermarket parts, including pistons, can vary in quality from one manufacturer to another. While Namura is a reputable brand, there's still a chance that the piston might not meet the exact specifications or performance of the original OEM part.

2. Lack of Warranty: OEM parts often come with warranties, whereas aftermarket parts, such as the Namura piston, do not typically include a warranty.

The decision to buy a Namura NX-40005-4 piston for a Yamaha QT50 depends on individual needs and priorities. If cost-effectiveness and quick availability are important factors, this aftermarket piston could be a good choice. However, if you prioritize OEM quality and warranty, you might prefer to purchase the original part from a Yamaha dealer. Ultimately, it's essential to consider the specific circumstances of your situation and weigh the pros and cons before making a decision.

Consider your budget, time constraints, and preference for OEM or aftermarket parts when deciding whether to purchase the Namura NX-40005-4 piston for your Yamaha QT50. If cost-effectiveness and quick availability are your priorities, the Namura piston could be a suitable choice. However, if you value OEM quality and warranty, it might be worth the investment to purchase the original part from a Yamaha dealer.

Details:

Combined shipping is available for multiple items. Specifications: Part: Piston, Size: 40.96mm, Oversize: 1.00 Piston Type: Cast, Ring Count: Dual. Shipping: Items are shipped within a timely manner. CRU Products was started by Cycles R Us in 2009.

MOST Namura pistons feature a machined head which helps reduce carbon build-up and reflect heat. Product Features Anodized piston head increases strength and heat dissipation. Fits:Make: model: Year: YamahaQT50 Yamahopper1979-1987, Yamaha Towny 50 MJ50 1982. All components are manufactured to OE-specs.

part #: nx400054 prices

• $50.99-$56.95

specifications pistondon:

• for makes: Yamaha
• for years: 1979-1987
• brand: Namura
• mpn: Nx-40005-4
• type: Piston
• items included: Piston Rings, Wrist Pin
• piston diameter: 40.96 Mm

returns pistondon:

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

seller pistondon:

• # reviews: 116736
• city: Chippewa Lake, Ohio
• rating: 99.9%

shipping pistondon:

• service: Standard
• cost: $0.00
• type: Fixed
• transit: 4-7 Days
• class: Standard

payments pistondon:

• wallet: Paypal
• credit card: Diners-club
• other

general pistondon:

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

offer pistondon:

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

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