MAIN SHAFT BEARING SUPPORT BIG TWIN 4-SPEED 1965-1986

This main shaft bearing support is an essential component when fitting an open primary drive to your classic Big Twin. Made from aluminum, it provides the necessary support point for the transmission main shaft when the original inner primary housing with its support bearing is not installed.

Key features

• Function: support for the transmission main shaft bearing.
• Material: aluminum.
• Application: open primary drive configurations.
• Installation: mounts directly to the transmission, occupying the position normally taken by the inner primary housing with support bearing.
• Supply: supplied without bearing.
• Required bearing: a sealed main shaft support bearing must be purchased separately.

Use and purpose

• Suitable for assembly, repair or conversion work on classic Big Twin transmissions.
• Provides proper main shaft support in open primary installations.
• We recommend checking the condition of the shaft, transmission and bearing before installation.

Compatibility / recommended use

• Compatible with: Harley-Davidson 4-speed Big Twin models, 1965 to 1986.
• Use: open primary drive applications.
• Confirm your transmission configuration and installed components before ordering.

At Iguana Custom you will find the spare parts needed to maintain or transform your Big Twin, with a selection designed for custom projects, restorations and reliable builds.