Description
This main drive gear spacer is a precision-machined transmission component designed for Harley-Davidson Big Twin 4-speed models from late 1977 through 1979. With a thickness of .550”, this spacer ensures proper alignment and spacing of the main drive gear assembly within the transmission housing.
It is a direct replacement for OEM part number 35070-77 and is essential for maintaining correct gear engagement and transmission performance. Ideal for rebuilds, restorations, or repairing worn drivetrain components.
Built to meet or exceed OEM specifications, this spacer provides reliable fitment and long service life in demanding riding conditions.
Features:
Type: Main drive gear spacer
Thickness: .550 inch
Replaces OEM: 35070-77
Precision-machined for accurate fitment
Maintains proper gear alignment and spacing
Durable construction for long-term use
OEM-style replacement component
Fitment:
Harley-Davidson Big Twin Models:
Late 1977–1979 Big Twin models with 4-speed transmissions
Note:
Designed for 4-speed transmission applications only. Please verify compatibility with your specific transmission setup before purchasing.
