fits model: Xs750, Xs, 750. make: Yamaha. year: 1977–1979.

( Manufacturer Part Number: 1J7-17421-03-00 ), ( Type: Transmission Cover Bolts )
The Yamaha 1J7-17421-03-00 is a critical component in the 1977-1979 XS750 and XS models, serving as the engine, transmission, drive, and counter/axle shaft. This component is a crucial part of the bike's powertrain, responsible for transferring power from the engine to the rear wheel.
The 1J7-17421-03-00 is a robust and reliable piece of engineering, designed to withstand the rigors of motoring. It is made from high-quality materials, ensuring durability and longevity. The shaft is precision-machined for smooth operation and minimal wear, while the counter gear is designed to accurately count rotations, ensuring optimal performance of the drive chain.
The transmission portion of this shaft is responsible for shifting gears, ensuring the bike can adapt to varying speeds and terrain. It is designed for smooth and efficient shifting, reducing the risk of mechanical issues and improving overall ride quality.
The drive portion of the shaft is responsible for transmitting the engine's torque to the rear wheel, enabling the bike to move forward. It is designed for maximum strength and durability, ensuring the bike can handle power and torque with ease.
The axle portion of the shaft is responsible for connecting the drive to the rear wheel, ensuring a secure and stable connection. It is designed for maximum rigidity, reducing the risk of wheel wobble and improving handling.
In summary, the Yamaha 1J7-17421-03-00 is a critical component in the 1977-1979 XS750 and XS models, responsible for transmitting power from the engine to the rear wheel. It is made from high-quality materials, ensuring durability and reliability, and is designed for smooth and efficient operation, reducing the risk of mechanical issues and improving overall ride quality.
Pros of buying Yamaha XS750 Engine (Model Number: 1J7-17421-03-00, Years: 1977-1979):1. Availability: These engines are widely available in the market, making it relatively easy to find a good second-hand unit.
2. Popularity: The Yamaha XS750 is a well-known and beloved motorcycle, ensuring a strong aftermarket support with numerous parts and resources available.
3. Power and Performance: The XS750 engine is known for its robust power and performance, providing a smooth riding experience.
4. Versatility: The engine can be used in various applications, such as in custom motorcycles, hot rods, or even as a stationary power source.
Cons of buying Yamaha XS750 Engine:1. Age and Wear: Being a vintage engine, you may encounter issues such as corrosion, worn-out parts, and potential electrical or mechanical failures.
2. Maintenance: Older engines require more frequent maintenance and may require specialized tools and knowledge to repair or restore.
3. Availability of Parts: While the XS750 has a strong aftermarket presence, some parts can be hard to find or expensive due to their age.
4. Cost: Restoring or rebuilding an old engine can be costly, especially if you decide to do it yourself.
Conclusion:The Yamaha XS750 engine (1J7-17421-03-00) can be a great addition to your project if you are a vintage motorcycle enthusiast or looking for a robust engine for custom applications. However, it is crucial to consider the potential costs and challenges associated with owning an older engine. If you are willing to invest time and resources, an XS750 engine can be a rewarding purchase, providing you with a unique and powerful powerplant.
Recommendation:If you are interested in purchasing an XS750 engine, I recommend conducting thorough research on the specific engine's condition, its history, and the costs associated with its restoration or maintenance. Additionally, consider seeking the advice of experienced motorcycle mechanics or enthusiasts to ensure you are making an informed decision. If you can find a well-maintained engine, it could be a valuable and enjoyable addition to your collection or project.
Gear teeth are as pictured. Bap Power Disports. 1977-1979 YAMAHA XS750 XS 750 ENGINE MOTOR TRANSMISSION DRIVE COUNTER AXLE SHAFT, This SHAFT is in very good condition and shows normal signs of wear.
Shaft is straight, Removed From: 1978 YAMAHA XS750 with UNKNOWN MILES FRAME# ENGINE #1J7-309722 BIN: Please review all pictures to assess the condition of item.