How many of these bearings do I need for my transmission?

You will need two of these main drive gear bearings to service a single transmission. It's a good idea to order both at the same time to ensure you have everything needed for the rebuild.

What is the main function of this bearing?

This bearing supports the main drive gear within your 5-speed Big Twin transmission. Its primary job is to allow the gear to rotate freely and efficiently, which is essential for transferring power from the clutch to the rest of the drivetrain.

Does this bearing come with any installation hardware?

This product is for the bearing only. Installation hardware, such as seals or snap rings, is not included and should be sourced separately if needed for your specific transmission rebuild.

Questions? Call Us:631-982-0042

M-F 8AM-4PM ET

Trusted Since 1957

Est. 1957

Twin Power 80-90 5 Speed Big Twin Main Drive Gear Bearing Replaces H-D 8904

Specifications

Brand: TwinPower
Part #: 601457
UPC: 887337412238

Twin Power 80-90 5 Speed Big Twin Main Drive Gear Bearing Replaces H-D 8904

Name: Twin Power 80-90 5 Speed Big Twin Main Drive Gear Bearing Replaces H-D 8904
Brand: TwinPower
SKU: twinpower-twin-power-80-90-5-speed-big-twin-main-drive-gear-bearing-replaces-h-d-t14-610486
Price: 45.04 USD
Availability: InStock

$45.04

Only 2 left in stock

Twin Power 5 Speed Big Twin Main Drive Gear Bearing. Replaces H-D 8904. Fits a wide range of Harley-Davidson models.

Key Features

Fits a wide range of Harley-Davidson 5-speed Big Twin models from 1980-1990.
Direct replacement for Harley-Davidson part number 8904.
Two bearings are required to service one transmission.

Secure CheckoutFast Shipping631-982-0042

Will this fit your vehicle?

Product Details

When you're rebuilding the transmission on your 5-speed Big Twin Harley-Davidson, getting the right internal components is key. This main drive gear bearing is designed to keep that crucial gear spinning smoothly, ensuring proper power transfer from the clutch to the transmission. It's built to replace the stock H-D 8904 part, so you know it's made to fit your bike's original setup.

This bearing is a well-built replacement part that helps maintain the integrity of your transmission's gear train. You'll need two of these bearings to service one transmission, so be sure to add both to your cart when you're ordering. It's a straightforward part to install if you're already inside the transmission case, fitting a wide range of Harley-Davidson models from the early 80s through 1990, including popular bikes like the Electra Glide, Softail, and FXR series.