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    COMPUFIRE Charging System 40 Amp Vented Rotor `81-99 Bt — 55560

    COMPUFIRE Charging System 40 Amp Vented Rotor `81-99 Bt — 55560

    $613.95

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    COMPUFIRE Charging System 40 Amp Vented Rotor `81-99 Bt — 55560. One individual item. Verified WPS motorcycle applications are listed below. Match exact year, model, connector, position and manufacturer number before ordering.

    In stock

    SKU: WP139-10021
    Category:
    Brands:

    Description

    COMPUFIRE Charging System 40 Amp Vented Rotor `81-99 Bt — 55560

    Features and specifications

    • This system produces 25 AMP at idle with 40 AMP above 2800 rpm
    • Fitments include Softail,Dyna and FLT with OEM primary due to the rotor and stators narrow profile
    • The vented rotor helps with heat dissipation, keeping the stator cooler allowing for maximum output
    • High output voltage regulator (14.25 V from idle)
    • Made in the USA

    Application

    Verified WPS motorcycle applications are listed below. Match exact year, model, connector, position and manufacturer number before ordering.

    View checked motorcycle models and years
    • Harley Davidson FLH Electra Glide: 1984, 1985
    • Harley Davidson FLHR Road King: 1994, 1995, 1996, 1997, 1998, 1999
    • Harley Davidson FLHRC Road King Classic: 1998, 1999
    • Harley Davidson FLHS Electra Glide Sport: 1984, 1987, 1988, 1989, 1990, 1991, 1992, 1993
    • Harley Davidson FLHT Electra Glide: 1986, 1987, 1995, 1996, 1997, 1998, 1999
    • Harley Davidson FLHTC Electra Glide Classic: 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999
    • Harley Davidson FLHTCU Electra Glide Ultra Classic: 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999
    • Harley Davidson FLHX Electra Glide Special: 1984, 1985
    • Harley Davidson FLST Softail Heritage: 1986, 1987, 1988, 1989, 1990
    • Harley Davidson FLSTC Softail Heritage Classic: 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999
    • Harley Davidson FLSTF Softail Fat Boy: 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999
    • Harley Davidson FLSTN Softail Heritage Special: 1996
    • Harley Davidson FLSTN Softail Nostalgia: 1993, 1994, 1995
    • Harley Davidson FLSTS Softail Heritage Springer: 1997, 1998, 1999
    • Harley Davidson FLTC Tour Glide Classic: 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993
    • Harley Davidson FLTCU Ultra Classic Tour Glide: 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996
    • Harley Davidson FLTR Road Glide: 1998, 1999
    • Harley Davidson FXD Dyna Super Glide: 1995, 1996, 1997, 1998, 1999
    • Harley Davidson FXDB-D Dyna Glide Daytona: 1992
    • Harley Davidson FXDB-S Dyna Glide Sturgis: 1991
    • Harley Davidson FXDC Dyna Super Glide Custom: 1992
    • Harley Davidson FXDL Dyna Low Rider: 1993, 1994, 1995, 1996, 1997, 1998, 1999
    • Harley Davidson FXDS-Conv Dyna Convertible: 1994, 1995, 1996, 1997, 1998, 1999
    • Harley Davidson FXDWG Dyna Wide Glide: 1993, 1994, 1995, 1996, 1997, 1998, 1999
    • Harley Davidson FXDX Dyna Super Glide Sport: 1999
    • Harley Davidson FXE Super Glide: 1984
    • Harley Davidson FXEF Fat Bob: 1985
    • Harley Davidson FXLR Low Rider Custom: 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994
    • Harley Davidson FXR Super Glide: 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994
    • Harley Davidson FXRC Low Glide: 1985
    • Harley Davidson FXRC Low Rider Chrome: 1987
    • Harley Davidson FXRD Grand Touring: 1986
    • Harley Davidson FXRDG Disc Glide: 1984
    • Harley Davidson FXRS Low Glide: 1984, 1985, 1987, 1988, 1989, 1990, 1991, 1992
    • Harley Davidson FXRS Low Rider: 1986
    • Harley Davidson FXRS-Conv Low Rider Convertible: 1990, 1991, 1992, 1993
    • Harley Davidson FXRS-SP Low Rider Sport: 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993
    • Harley Davidson FXRSE CVO FXR: 1999
    • Harley Davidson FXRT Sport Glide: 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992
    • Harley Davidson FXSB Low Rider – Belt: 1984, 1985
    • Harley Davidson FXST Softail: 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1999
    • Harley Davidson FXSTB Softail Night Train: 1999
    • Harley Davidson FXSTC Softail Custom: 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999
    • Harley Davidson FXSTS Softail Springer: 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999
    • Harley Davidson FXSTSB Softail Bad Boy: 1995, 1996, 1997
    • Harley Davidson FXWG Wide Glide: 1984, 1985, 1986

    WPS application data checked November 5, 2026. Modified motorcycles may require different components.

    What you receive

    One individual item.

    Product identification

    Brand: COMPUFIRE
    Manufacturer part: 55560
    WPS part: 139-10021

    Product photos are manufacturer reference images. Only the stated item or complete retail kit is included.

    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
    1984–1985Harley DavidsonFLH Electra Glide
    1994–1999Harley DavidsonFLHR Road King
    1998–1999Harley DavidsonFLHRC Road King Classic
    1984, 1987–1993Harley DavidsonFLHS Electra Glide Sport
    1986–1987, 1995–1999Harley DavidsonFLHT Electra Glide
    1984–1999Harley DavidsonFLHTC Electra Glide Classic
    1989–1999Harley DavidsonFLHTCU Electra Glide Ultra Classic
    1984–1985Harley DavidsonFLHX Electra Glide Special
    1986–1990Harley DavidsonFLST Softail Heritage
    1988–1999Harley DavidsonFLSTC Softail Heritage Classic
    1990–1999Harley DavidsonFLSTF Softail Fat Boy
    1996Harley DavidsonFLSTN Softail Heritage Special
    1993–1995Harley DavidsonFLSTN Softail Nostalgia
    1997–1999Harley DavidsonFLSTS Softail Heritage Springer
    1984–1993Harley DavidsonFLTC Tour Glide Classic
    1989–1996Harley DavidsonFLTCU Ultra Classic Tour Glide
    1998–1999Harley DavidsonFLTR Road Glide
    1995–1999Harley DavidsonFXD Dyna Super Glide
    1992Harley DavidsonFXDB-D Dyna Glide Daytona
    1991Harley DavidsonFXDB-S Dyna Glide Sturgis
    1992Harley DavidsonFXDC Dyna Super Glide Custom
    1993–1999Harley DavidsonFXDL Dyna Low Rider
    1994–1999Harley DavidsonFXDS-Conv Dyna Convertible
    1993–1999Harley DavidsonFXDWG Dyna Wide Glide
    1999Harley DavidsonFXDX Dyna Super Glide Sport
    1984Harley DavidsonFXE Super Glide
    1985Harley DavidsonFXEF Fat Bob
    1987–1994Harley DavidsonFXLR Low Rider Custom
    1986–1994Harley DavidsonFXR Super Glide
    1985Harley DavidsonFXRC Low Glide
    1987Harley DavidsonFXRC Low Rider Chrome
    1986Harley DavidsonFXRD Grand Touring
    1984Harley DavidsonFXRDG Disc Glide
    1984–1985, 1987–1992Harley DavidsonFXRS Low Glide
    1986Harley DavidsonFXRS Low Rider
    1990–1993Harley DavidsonFXRS-Conv Low Rider Convertible
    1986–1993Harley DavidsonFXRS-SP Low Rider Sport
    1999Harley DavidsonFXRSE CVO FXR
    1984–1992Harley DavidsonFXRT Sport Glide
    1984–1985Harley DavidsonFXSB Low Rider – Belt
    1984–1990, 1999Harley DavidsonFXST Softail
    1999Harley DavidsonFXSTB Softail Night Train
    1986–1999Harley DavidsonFXSTC Softail Custom
    1988–1999Harley DavidsonFXSTS Softail Springer
    1995–1997Harley DavidsonFXSTSB Softail Bad Boy
    1984–1986Harley DavidsonFXWG Wide Glide

    Source: WPS vehicle-fitment data · WPS part 139-10021 · Checked November 5, 2026.

    Additional information

    Weight 11 lbs
    Dimensions 9 × 8 × 8 in

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