fits model: Twin. year: 1977–1989.

( Brand: Mid Usa ), ( Manufacturer Part Number: 66069 ), ( Part Type: Pinion Gear Shaft ), ( Country Of Manufacture: United States )
The 66069 pinion gear tapered shaft is a crucial component for the Big Twin motorcycles manufactured between 1977 and 1989. This part is essential for the smooth operation and power transmission of the bike's drivetrain.
This pinion gear tapered shaft is meticulously designed and manufactured to meet the high standards required for such an essential component. The tapered design of the shaft ensures a secure and precise fit with the corresponding sprocket, ensuring optimal power transfer and minimizing vibrations.
The shaft is made from high-strength steel, ensuring its durability and resistance to wear and tear. It is heat-treated to increase its strength and hardness, ensuring it can withstand the rigors of continuous use. The surface of the shaft is also treated to provide a smooth finish, reducing friction and ensuring smooth operation.
The 66069 pinion gear tapered shaft is a direct replacement for the original part, ensuring a perfect fit and easy installation. It is designed to fit seamlessly into the existing drivetrain system, ensuring the bike continues to run smoothly and efficiently.
In conclusion, the 66069 pinion gear tapered shaft is a high-quality, reliable, and durable replacement part for Big Twin motorcycles manufactured between 1977 and 1989. Its tapered design, high-strength steel construction, and heat treatment ensure it can withstand the rigors of continuous use, providing a smooth and efficient operation.
Pros of buying a 66069 pinion gear tapered shaft for a 1977-1989 Big Twin:1. Availability: The 66069 pinion gear tapered shaft is widely available from various aftermarket parts suppliers, ensuring easy replacement or upgrade.
2. Compatibility: This part is designed to fit most Big Twin models from 1977 to 1989, making it a versatile choice for owners of these bikes.
3. Durability: The tapered shaft is built to withstand the high torque and stresses encountered in motorcycle use, providing reliable performance over time.
Cons of buying a 66069 pinion gear tapered shaft for a 1977-1989 Big Twin:1. Quality concerns: Some aftermarket parts may not meet the same quality standards as original equipment manufacturer (OEM) parts, which could lead to premature failure or reduced performance.
2. Installation complexity: Installing a new tapered shaft requires disassembling the transmission, which can be a challenging task for those without mechanical experience or proper tools.
3. Cost: Although aftermarket parts such as the 66069 pinion gear tapered shaft are often less expensive than OEM parts, the cost of replacing the entire transmission can still be substantial.
Conclusion:Buying a 66069 pinion gear tapered shaft for a 1977-1989 Big Twin can be a cost-effective solution to replace a worn-out or damaged original part. However, it is essential to consider the potential quality concerns and installation complexity before making a decision. If you have the necessary mechanical skills and are comfortable working with aftermarket parts, the 66069 pinion gear tapered shaft could be a suitable choice. If you prefer OEM parts or are concerned about the installation, it would be advisable to consult with a professional mechanic.
Color code: white. If the gear lash is too tight motor will whine. If the gear lash is too loose motor will knock.
Replaces HD. Gears are measured over two. Fits big Twin as listed. Jim's pinion gear for tapered shaft big Twin late most aftermarket cams come with red color coded gears pins: 1.
A cam of certain color code usually should be used with pinion gear the same code, but matching tolerance variations in crankcase and cover may require use larger or smaller. Diameter over.