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

OEM style replacement that simplifies servicing of 1980-1990 Big Twin 5-speed transmissions

-   OEM style replacement that simplifies servicing of 1980-1990 Big Twin 5-speed transmissions
-   Precise needle style construction helps reduce friction and wear in the overdrive gear
-   Dedicated 5th gear main drive gear bearing to support high-load, high-speed operation
-   Replaces H-D® 8904

This Part Fits:

Year

Make

Model

Submodel

1980

Harley-Davidson

FLH Electra Glide

Base

1980-1984,1987-1990

Harley-Davidson

FLHS Electra Glide Sport

Base

1986-1990

Harley-Davidson

FLHT Electra Glide Standard

Base

1983-1990

Harley-Davidson

FLHTC Electra Glide Classic

Base

1989-1990

Harley-Davidson

FLHTCU Electra Glide Ultra Classic

Base

1986-1990

Harley-Davidson

FLST Heritage Softail

Base

1988-1990

Harley-Davidson

FLSTC Heritage Softail Classic

Base

1990

Harley-Davidson

FLSTF Fat Boy

Base

1980-1983

Harley-Davidson

FLT Tour Glide

Base

1980-1982

Harley-Davidson

FXB Sturgis

Base

1983

Harley-Davidson

FXDG Disc Glide

Base

1980-1984

Harley-Davidson

FXE Super Glide

Base

1980-1985

Harley-Davidson

FXEF Fat Bob

Base

1987-1990

Harley-Davidson

FXLR Low Rider Custom

Base

1982-1990

Harley-Davidson

FXR Super Glide II

Base

1985-1987

Harley-Davidson

FXRC Low Rider Chrome

Base

1986

Harley-Davidson

FXRD Sport Glide Grand Touring

Base

1984

Harley-Davidson

FXRDG Disc Glide

Base

1985-1990

Harley-Davidson

FXRPF Police

Base

1982-1990

Harley-Davidson

FXRS Low Glide

Base

1990

Harley-Davidson

FXRS-Conv Low Rider Sport Convertible

Base

1986-1990

Harley-Davidson

FXRS-SP Low Rider Sport

Base

1983-1990

Harley-Davidson

FXRT Sport Glide

Base

1980-1982

Harley-Davidson

FXS Low Rider

Base

1983-1985

Harley-Davidson

FXSB Low Rider - Belt

Base

1986-1990

Harley-Davidson

FXST Softail Standard

Base

1986-1990

Harley-Davidson

FXSTC Softail Custom

Base

1988-1990

Harley-Davidson

FXSTS Springer Softail

Base

1980-1986

Harley-Davidson

FXWG Wide Glide

Base

## Details

- **Price:** 83.42 CAD
- **Vendor:** TwinPower
- **Type:** Bearings

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 83.42 CAD | In stock |

## Images

- Photo - Primary

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/twin-power-80-90-5-speed-big-twin-main-drive-gear-bearing-replaces-h-d-8904)
> Updated: 2026-07-01