SKU:17-0141
The Motorshop 12-1/2 inch 4-speed transmission mainshaft replaces OEM part 35039-70 on Harley Davidson FL models. Measuring 12-1/2 inches in length, it restores shifting function in the Big Twin 4-speed transmission without altering drivetrain geometry.
Made in Taiwan, the shaft meets the dimensional standards required for 1970-1979 FL models and also fits the listed 1971-1984 FX models that share the same transmission layout. Its precise machining supports direct installation using existing bearings and gears.
The mainshaft kit includes the 12.470-inch shaft and related 4-speed components needed for complete transmission service on these motorcycles. Its one-piece construction withstands repeated gear shifts under normal street and touring loads.4-speed Transmission mainshaft is 12-1/2 inch long.
Upgrade your Harley Davidson FL motorcycle with the Motorshop 12-1/2 inch 4-Speed Transmission Mainshaft, designed for precise fit and reliable performance. Crafted in Taiwan, this mainshaft measures approximately 12-1/2 inches in length, ensuring compatibility with a range of late 20th-century Harley Davidson FL models from 1970 to 1979. The mainshaft is engineered to meet OEM standards, providing a seamless replacement that maintains your motorcycle's shifting efficiency and drivetrain integrity. Its durable construction ensures longevity even under demanding riding conditions, making it an essential component for restoring or maintaining your transmission system.
Constructed from high-quality materials, the Motorshop mainshaft features a robust design to withstand the rigors of motorcycle operation. The precise measurements and manufacturing standards guarantee a perfect fit, simplifying installation and ensuring optimal performance. Whether you're rebuilding your transmission or replacing a worn part, this mainshaft offers an excellent solution to keep your Harley running smoothly. Compatibility with various OEM parts makes it a versatile choice for mechanics and enthusiasts alike, enabling easy integration with existing components.
Included with this mainshaft are accessory items such as the 12-1/2 inch 4-Speed Transmission Mainshaft Kit, 12.470 inch mainshaft, Big Twin Mainshaft Assembly, and other related parts, providing comprehensive options for your repair or upgrade project. Trust the Motorshop brand for quality and reliability in maintaining your classic Harley Davidson motorcycle, ensuring your ride stays efficient and dependable for years to come.
Features:
Couldn't load pickup availability
