fits make: Yamaha. year: 1978-81.

( Manufacturer Part Number: 8G6-11637-00 ), ( Part Type: Piston ), ( Country/region Of Manufacture: Japan ), ( 1978 Exciter 340 / 1978 Exciter 440: 1979 Exciter 440 / 1980 Exciter 440 / ), ( 1981 Exciter 440: Ex340b / Ex440b / Ex440c / Ex440d / Ex440e )
The Yamaha EX440 Exciter, manufactured between 1978 and 1981, is a classic motorcycle known for its powerful and agile performance. This model, specifically, is the third revision of the piston for the 340cc engine (8G6-11637-00). Let's delve deeper into the features and characteristics of this crucial component.
The 8G6-11637-00 piston, designed for the EX440 Exciter, is an integral part of the single-cylinder, two-stroke engine. Its primary function is to transfer force from the connecting rod to the crankshaft, converting linear motion into rotational power upon the ignition of the fuel mixture.
This piston is crafted from a forged aluminum alloy, resulting in a strong and durable design. Its dual compressed rings offer excellent sealing and efficiency, while its lightweight nature reduces overall engine weight for enhanced responsiveness. Furthermore, the piston's chrome-plated skirt effectively minimizes frictional heat and resists wear, significantly contributing to the engine's longevity.
The crown of the piston showcases the intricacies of Yamaha's engineering prowess. Its concave shape with a dished top allows for improved combustion chamber efficiency, enabling the engine to generate higher power outputs while maintaining an optimal air-fuel mixture. Additionally, the piston's cooling fins add to heat dissipation, vital for maintaining engine stability and thermal equilibrium.
In the quest for optimal engine performance, the 8G6-11637-00 piston possesses an refined design that balances power and efficiency. This is further complemented by its precise dimensions, ensuring a secure fit and function within the engine cylinder. Additionally, the piston's SKF bearings guarantee a long lifespan and minimal wear, fostering a seamless, enduring riding experience.
In summary, the 8G6-11637-00 piston serves as the heart of the Yamaha EX440 Exciter's engine. Its high-performance features, such as its forged aluminum alloy construction, dual compressed rings, cooling fins, and chrome-plated skirt, ensure both durability and enhanced engine performance. These intricacies make this component a must-have for any EX440 Exciter enthusiast or collector, supporting the motorcycle's legacy with every ride.
The Yamaha EX440 Exciter motorcycle, specifically the 8G6-11637-00 piston number 3 for the 340cc engine used in models from 1978 to 1981, can be a valuable investment for enthusiasts or riders looking for parts for their classic motorcycle. Like any purchase, there are both pros and cons to consider before deciding to buy.
Pros:1. Authenticity and rarity: For motorcycle collectors, having original or hard-to-find parts can be an attractive investment. These pistons are OEM (original equipment manufacturer) parts and can add to the authenticity of a classic motorcycle.
2. Improved performance: If you are looking for better engine performance, new pistons can help improve the bike's power output and overall reliability.
3. Long-term savings: Opting for OEM parts can save riders from the risk of potential issues that may arise from using non-authentic parts.
4. Satisfaction of DIY work: Buying and installing the piston can provide a sense of accomplishment for those who enjoy working on their bikes.
Cons:1. Cost: OEM parts, such as these pistons, can be more expensive than aftermarket parts due to their authenticity.
2. Availability: It may take some time and effort to locate specific parts like these, as their availability is dependent on the specific model and rarity.
3. Installation complexity: Installing pistons can be a challenging process, especially for those who lack the experience and tools necessary. This may lead to seeking professional help, which could increase the total cost of the project.
Conclusion:Weighing the pros and cons, the decision to purchase the 8G6-11637-00 Yamaha EX440 Exciter 1978-81 piston largely depends on the rider's priorities and goals. If you are a collector seeking authenticity or a rider looking for improved performance and reliability, investing in an OEM piston may be the best choice. However, if budget concerns or installation complexities are a concern, it may be worth exploring aftermarket options. Ultimately, it's essential to carefully research and consider your needs before making a purchase.
Recommendation:Before making a decision, we recommend visiting reputable online marketplaces or contacting authorized Yamaha dealers to compare prices and verify availability. Ensure that you understand the installation process and have the necessary tools and expertise to complete the project or plan to seek professional help if needed. Additionally, consider your priorities and budget to determine whether an OEM piston provides the best value for your motorcycle project.