Alter Ego Motorcycle Supply — Serving Riders Since 1973

Kansas City, MO & Shawnee, KS · Since 1973

PARTS. PERFORMANCE.
PASSION.

Find the parts and gear for your next ride.

U.S. shipping  ·  Free Kansas City pickup when ready

SELECT YOUR RIDEFind parts for your motorcycle

Garage 0

Your garage

Save up to 10 motorcycles in this browser. Bikes are not synced to your account or other devices.

    Choose year, make and model. Matching parts open automatically when you choose a model.

    Enable JavaScript to choose your motorcycle and use the garage.

    ALL BALLS Big Twin Jackshaft 9 Tooth Large Gear — 79-2105

    $144.99

    Sign in to save for later

    ALL BALLS big twin jackshaft 9 tooth large gear.

    In stock

    SKU: WP279-2105
    Category:
    Brands:

    Description

    ALL BALLS big twin jackshaft 9 tooth large gear. Manufacturer part number 79-2105.

    WPS part number 279-2105.

    Vehicle fitment

    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.

    Compatible vehicle years, makes and models
    YearsMakeModel
    1989–1993Harley DavidsonFLHS Electra Glide Sport
    1989–1993Harley DavidsonFLHTC Electra Glide Classic
    1989–1993Harley DavidsonFLHTCU Electra Glide Ultra Classic
    1989–1990Harley DavidsonFLST Softail Heritage
    1989–1993Harley DavidsonFLSTC Softail Heritage Classic
    1990–1993Harley DavidsonFLSTF Softail Fat Boy
    1993Harley DavidsonFLSTN Softail Nostalgia
    1989–1993Harley DavidsonFLTC Tour Glide Classic
    1989–1993Harley DavidsonFLTCU Ultra Classic Tour Glide
    1992Harley DavidsonFXDB-D Dyna Glide Daytona
    1991Harley DavidsonFXDB-S Dyna Glide Sturgis
    1992Harley DavidsonFXDC Dyna Super Glide Custom
    1993Harley DavidsonFXDL Dyna Low Rider
    1993Harley DavidsonFXDWG Dyna Wide Glide
    1989–1993Harley DavidsonFXLR Low Rider Custom
    1989–1993Harley DavidsonFXR Super Glide
    1989–1992Harley DavidsonFXRS Low Glide
    1990–1993Harley DavidsonFXRS-Conv Low Rider Convertible
    1989–1993Harley DavidsonFXRS-SP Low Rider Sport
    1989–1992Harley DavidsonFXRT Sport Glide
    1989–1990Harley DavidsonFXST Softail
    1989–1993Harley DavidsonFXSTC Softail Custom
    1989–1993Harley DavidsonFXSTS Softail Springer

    Source: WPS vehicle-fitment data · WPS part 279-2105 · Checked November 11, 2026.

    Additional information

    Weight 0.91 lbs
    Dimensions 5 × 7.9 × 1.5 in

    Reviews

    There are no reviews yet.

    Be the first to review “ALL BALLS Big Twin Jackshaft 9 Tooth Large Gear — 79-2105”

    Your email address will not be published. Required fields are marked *

    Complete the job

    Parts & supplies

    • Electrical installation tools

      Choose the correct crimping, testing and connector tools.

    • Wiring and connectors

      Match wire gauge, circuit protection, connector type and system voltage.

    Tools & supplies from our shop

    Related Items

    Select your motorcycle to check for matching parts.