Description
ALL BALLS big twin jackshaft 9 tooth large gear. Manufacturer part number 79-2105.
WPS part number 279-2105.
ALL BALLS big twin jackshaft 9 tooth large gear.
In stock
ALL BALLS big twin jackshaft 9 tooth large gear. Manufacturer part number 79-2105.
WPS part number 279-2105.
WPS lists this part for the following vehicles. Match your exact model and year.
Follow the position, mounting and installation notes in the product description. Modified vehicles may require different parts.
| Years | Make | Model |
|---|---|---|
| 1989–1993 | Harley Davidson | FLHS Electra Glide Sport |
| 1989–1993 | Harley Davidson | FLHTC Electra Glide Classic |
| 1989–1993 | Harley Davidson | FLHTCU Electra Glide Ultra Classic |
| 1989–1990 | Harley Davidson | FLST Softail Heritage |
| 1989–1993 | Harley Davidson | FLSTC Softail Heritage Classic |
| 1990–1993 | Harley Davidson | FLSTF Softail Fat Boy |
| 1993 | Harley Davidson | FLSTN Softail Nostalgia |
| 1989–1993 | Harley Davidson | FLTC Tour Glide Classic |
| 1989–1993 | Harley Davidson | FLTCU Ultra Classic Tour Glide |
| 1992 | Harley Davidson | FXDB-D Dyna Glide Daytona |
| 1991 | Harley Davidson | FXDB-S Dyna Glide Sturgis |
| 1992 | Harley Davidson | FXDC Dyna Super Glide Custom |
| 1993 | Harley Davidson | FXDL Dyna Low Rider |
| 1993 | Harley Davidson | FXDWG Dyna Wide Glide |
| 1989–1993 | Harley Davidson | FXLR Low Rider Custom |
| 1989–1993 | Harley Davidson | FXR Super Glide |
| 1989–1992 | Harley Davidson | FXRS Low Glide |
| 1990–1993 | Harley Davidson | FXRS-Conv Low Rider Convertible |
| 1989–1993 | Harley Davidson | FXRS-SP Low Rider Sport |
| 1989–1992 | Harley Davidson | FXRT Sport Glide |
| 1989–1990 | Harley Davidson | FXST Softail |
| 1989–1993 | Harley Davidson | FXSTC Softail Custom |
| 1989–1993 | Harley Davidson | FXSTS Softail Springer |
Source: WPS vehicle-fitment data · WPS part 279-2105 · Checked November 11, 2026.
| Weight | 0.91 lbs |
|---|---|
| Dimensions | 5 × 7.9 × 1.5 in |
Choose the correct crimping, testing and connector tools.
Match wire gauge, circuit protection, connector type and system voltage.

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