WOSSNER 8266D050 Piston Kit Forged 87.50MM

( Brand: Wossner ), ( Manufacturer Part Number: 8266D050 ), ( Type: Piston Kit )

Review WOSSNER Piston Kit 87.50mm Forged fits YZ490 1982–1984

The Wossner 8266D050 piston is a high-performance replacement for the stock piston in Yamaha YZ490 motorcycles manufactured between 1982 and 1984. This forged piston kit is designed to provide greater durability, reliability, and power compared to the original equipment.

Measuring 87.50mm in bore size, this piston is specifically engineered to fit the YZ490's engine. Its forged construction ensures a stronger and more uniform structure, reducing the likelihood of piston failure due to heat or pressure. The piston's crown is optimized for a better gas flow, improving combustion efficiency and increasing power output.

The Wossner 8266D050 piston features a reinforced skirt that enhances its rigidity, preventing piston-to-liner contact and minimizing friction. The piston's ring grooves are precision machined to ensure proper ring fit and sealing, reducing the likelihood of blow-by and oil consumption.

Additionally, the piston's pin bosses are reinforced, providing increased support for the connecting rod and reducing the stress on the piston. The piston also comes with a lightweight, yet strong, piston pin that ensures smooth operation and reduces engine vibration.

This piston kit includes all necessary hardware, including the piston pin, rings, and clips, making it a complete and convenient solution for motorcycle enthusiasts and professional racers seeking to upgrade their YZ490's engine. With its superior quality and performance, the Wossner 8266D050 piston is an excellent investment for anyone looking to maximize the potential of their Yamaha YZ490 motorcycle.

Wossner 8266D050 Forged Piston Kit for YZ490 (82-84): A Detailed Analysis

The Wossner 8266D050 forged piston kit is a popular upgrade option for the YZ490 motorcycle models from 1982 to 1984. This kit is known for its high-quality components and potential performance enhancements. In this analysis, we will discuss the pros and cons of purchasing this piston kit to help you make an informed decision.

1. Enhanced durability: Forged pistons are stronger and more resilient than their cast counterparts. This makes them ideal for high-performance applications and heavy usage.

2. Improved power output: Forged pistons offer better thermal conductivity, which can lead to increased power output and better combustion efficiency.

3. Precision manufacturing: Wossner pistons are known for their precise manufacturing processes, ensuring a perfect fit and optimal engine performance.

4. Longevity: Forged pistons generally last longer than cast pistons, reducing the need for frequent replacements and maintenance.

5. Enhanced reliability: The forged piston kit is designed to enhance the overall reliability of the engine by reducing the likelihood of piston failure.

1. Cost: Forged piston kits tend to be more expensive than cast piston kits due to the higher manufacturing costs and materials used.

2. Installation complexity: Installing a forged piston kit can be a more complex process than installing a cast piston kit due to the need for precise measurements and fitting.

3. Potential clearance issues: Depending on the specific engine configuration, there may be clearance issues that need to be addressed when installing the forged piston kit.

4. Requires additional components: In some cases, installing a forged piston kit may require additional components, such as new rings or piston pins, which can add to the overall cost.

The Wossner 8266D050 forged piston kit offers several advantages over cast piston kits, including enhanced durability, improved power output, precision manufacturing, longevity, and reliability. However, it also comes with some disadvantages, such as a higher cost, installation complexity, potential clearance issues, and the need for additional components.

Based on the information provided, it is recommended that those looking to purchase the Wossner 8266D050 forged piston kit for their YZ490 motorcycle carefully consider the benefits and drawbacks. If the performance enhancements and improved reliability are worth the investment, then this kit is an excellent choice. However, if the cost or installation complexity is a concern, a cast piston kit may be a more suitable alternative. Ultimately, the decision should be based on your specific needs, budget, and technical capabilities.

Details:

New in box.

part #: 8266d050 prices

• $200.00-$288.16

specifications pistondon:

• for models: Yz490
• for years: 1982-1984
• brand: Wossner
• mpn: 8266d050
• type: Piston Kit

shipping pistondon:

• class: Standard
• service: USPS Ground Advantage
• type: Calculated
• transit: 5-11 Days
• carrier: USPS
• cost: $7.36

offer pistondon:

• availability: In Stock
• quantity: 1
• sold: 0
• started: November 7, 2025
• best offers: True
• options: Ship-to-home

payments pistondon:

• wallet: Google-pay
• other
• credit card: Discover

general pistondon:

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

returns pistondon:

• policy: No Returns

seller pistondon:

• # reviews: 326
• rating: 100.0%
• city: Leon, Iowa

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