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Alternator

Alternator

Alternator

Harley Bike Alternators & Regulators at JJ Motorsports

Keep your Harley charged and running strong with premium regulators and rectifying regulators from JJ Motorsports, engineered for reliable voltage control and maximum charging output on Sportster XL, FL/FLH Touring, and Big Twin models. These high-quality units prevent overcharging and ensure steady power for lights, ignition, and accessories.

Shop Cycle Electric and Drag Specialties regulators for proven durability. Explore related categories such as Harley lights and electrical for stators and batteries, or Harley for wiring and switches to complete your charging system upgrade.

Top Harley Alternators & Regulators

Browse our in-stock inventory below with same-day shipping and expert support. Free shipping on orders over $99! Questions? Contact us for fitment advice!

  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • DRAG SPECIALTIES Regulator - FX/FLST '00 - Black 74512-00BLK

    DRAG SPECIALTIES Regulator - FX/FLST '00 - Black 74512-00BLK

    DRAG SPECIALTIES

    $141.39
    Two years of development and design went into producing a superior regulator, Fully assembled in the USA with domestic made electrical boards, Tested three different times during the assembly process to ensure the best possible product, Superior internal...
    21121052
    SKU:
    21121052
    Availability:
    Ships Same Business Day
    Weight:
    1.10 LBS
    MATERIAL:
    ALUMINUM
    RIDING STYLE:
    STREET
    AMPS:
    32 A
    PRODUCT NAME:
    REGULATOR
    COLOR/FINISH:
    BLACK
    UNITS:
    EACH
    BATTERY VOLTAGE:
    12 V
    $141.39
    Qty in Cart: 0
    Quantity:
    Price:
    $141.39
    Subtotal:
  • DRAG SPECIALTIES Regulator - XL '04-'06 - Chrome 74490-04CHR

    DRAG SPECIALTIES Regulator - XL '04-'06 - Chrome 74490-04CHR

    DRAG SPECIALTIES

    $145.55
    Two years of development and design went into producing a superior regulator, Fully assembled in the USA with domestic made electrical boards, Tested three different times during the assembly process to ensure the best possible product, Superior internal...
    21121059
    SKU:
    21121059
    Availability:
    Ships Same Business Day
    Weight:
    1.00 LBS
    PRODUCT NAME:
    REGULATOR
    UNITS:
    EACH
    COLOR/FINISH:
    CHROME
    MATERIAL:
    ALUMINUM
    RIDING STYLE:
    STREET
    AMPS:
    22 A
    BATTERY VOLTAGE:
    12 V
    $145.55
    Qty in Cart: 0
    Quantity:
    Price:
    $145.55
    Subtotal:
  • DRAG SPECIALTIES Regulator - XL '92-'93 - Chrome 74523-92CHR

    DRAG SPECIALTIES Regulator - XL '92-'93 - Chrome 74523-92CHR

    DRAG SPECIALTIES

    $145.55
    Two years of development and design went into producing a superior regulator, Fully assembled in the USA with domestic made electrical boards, Tested three different times during the assembly process to ensure the best possible product, Superior internal...
    21121065
    SKU:
    21121065
    Availability:
    Ships Same Business Day
    Weight:
    1.00 LBS
    COLOR/FINISH:
    CHROME
    UNITS:
    EACH
    AMPS:
    22 A
    BATTERY VOLTAGE:
    12 V
    MATERIAL:
    ALUMINUM
    PRODUCT NAME:
    REGULATOR
    RIDING STYLE:
    STREET
    $145.55
    Qty in Cart: 0
    Quantity:
    Price:
    $145.55
    Subtotal:
  • DRAG SPECIALTIES Regulator - XL '91 - Black 74523-91BLK

    DRAG SPECIALTIES Regulator - XL '91 - Black 74523-91BLK

    DRAG SPECIALTIES

    $141.39
    Two years of development and design went into producing a superior regulator, Fully assembled in the USA with domestic made electrical boards, Tested three different times during the assembly process to ensure the best possible product, Superior internal...
    21121066
    SKU:
    21121066
    Availability:
    Ships Same Business Day
    Weight:
    1.05 LBS
    UNITS:
    EACH
    MATERIAL:
    ALUMINUM
    PRODUCT NAME:
    REGULATOR
    RIDING STYLE:
    STREET
    AMPS:
    22 A
    BATTERY VOLTAGE:
    12 V
    COLOR/FINISH:
    BLACK
    $141.39
    Qty in Cart: 0
    Quantity:
    Price:
    $141.39
    Subtotal:
  • DRAG SPECIALTIES Regulator - XL '84-'90 - Black 74523-84BLK

    DRAG SPECIALTIES Regulator - XL '84-'90 - Black 74523-84BLK

    DRAG SPECIALTIES

    $141.39
    Two years of development and design went into producing a superior regulator, Fully assembled in the USA with domestic made electrical boards, Tested three different times during the assembly process to ensure the best possible product, Superior internal...
    21121068
    SKU:
    21121068
    Availability:
    Ships Same Business Day
    Weight:
    1.10 LBS
    BATTERY VOLTAGE:
    12 V
    COLOR/FINISH:
    BLACK
    MATERIAL:
    ALUMINUM
    RIDING STYLE:
    STREET
    AMPS:
    19 A
    PRODUCT NAME:
    REGULATOR
    UNITS:
    EACH
    $141.39
    Qty in Cart: 0
    Quantity:
    Price:
    $141.39
    Subtotal:
  • DRAG SPECIALTIES Regulator - XL '84-'90 - Chrome 74523-84ACHR

    DRAG SPECIALTIES Regulator - XL '84-'90 - Chrome 74523-84ACHR

    DRAG SPECIALTIES

    $145.55
    Two years of development and design went into producing a superior regulator, Fully assembled in the USA with domestic made electrical boards, Tested three different times during the assembly process to ensure the best possible product, Superior internal...
    21121069
    SKU:
    21121069
    Availability:
    Ships Same Business Day
    Weight:
    1.10 LBS
    BATTERY VOLTAGE:
    12 V
    COLOR/FINISH:
    CHROME
    RIDING STYLE:
    STREET
    UNITS:
    EACH
    AMPS:
    19 A
    MATERIAL:
    ALUMINUM
    PRODUCT NAME:
    REGULATOR
    $145.55
    Qty in Cart: 0
    Quantity:
    Price:
    $145.55
    Subtotal:
  • DRAG SPECIALTIES Regulator - XL '09-'13 - Black 74711-08BLK

    DRAG SPECIALTIES Regulator - XL '09-'13 - Black 74711-08BLK

    DRAG SPECIALTIES

    $141.39
    Two years of development and design went into producing a superior regulator, Fully assembled in the USA with domestic made electrical boards, Tested three different times during the assembly process to ensure the best possible product, Superior internal...
    21121072
    SKU:
    21121072
    Availability:
    Ships Same Business Day
    Weight:
    1.00 LBS
    AMPS:
    32 A
    MATERIAL:
    ALUMINUM
    PRODUCT NAME:
    REGULATOR
    RIDING STYLE:
    STREET
    BATTERY VOLTAGE:
    12 V
    COLOR/FINISH:
    BLACK
    UNITS:
    EACH
    $141.39
    Qty in Cart: 0
    Quantity:
    Price:
    $141.39
    Subtotal:
  • DRAG SPECIALTIES Regulator - XL '94-'03 - Black 74523-94BLK

    DRAG SPECIALTIES Regulator - XL '94-'03 - Black 74523-94BLK

    DRAG SPECIALTIES

    $141.39
    Two years of development and design went into producing a superior regulator, Fully assembled in the USA with domestic made electrical boards, Tested three different times during the assembly process to ensure the best possible product, Superior internal...
    21121074
    SKU:
    21121074
    Availability:
    Ships Same Business Day
    Weight:
    0.95 LBS
    AMPS:
    22 A
    BATTERY VOLTAGE:
    12 V
    COLOR/FINISH:
    BLACK
    UNITS:
    EACH
    PRODUCT NAME:
    REGULATOR
    MATERIAL:
    ALUMINUM
    RIDING STYLE:
    STREET
    $141.39
    Qty in Cart: 0
    Quantity:
    Price:
    $141.39
    Subtotal:
  • DRAG SPECIALTIES Regulator - XL '94-'03 - Chrome 74490-00CHR

    DRAG SPECIALTIES Regulator - XL '94-'03 - Chrome 74490-00CHR

    DRAG SPECIALTIES

    $145.55
    Two years of development and design went into producing a superior regulator, Fully assembled in the USA with domestic made electrical boards, Tested three different times during the assembly process to ensure the best possible product, Superior internal...
    21121075
    SKU:
    21121075
    Availability:
    Ships Same Business Day
    Weight:
    1.00 LBS
    AMPS:
    22 A
    BATTERY VOLTAGE:
    12 V
    COLOR/FINISH:
    CHROME
    UNITS:
    EACH
    MATERIAL:
    ALUMINUM
    PRODUCT NAME:
    REGULATOR
    RIDING STYLE:
    STREET
    $145.55
    Qty in Cart: 0
    Quantity:
    Price:
    $145.55
    Subtotal:
  • DRAG SPECIALTIES Regulator - XL '07-'08 - Black 74546-07BLK

    DRAG SPECIALTIES Regulator - XL '07-'08 - Black 74546-07BLK

    DRAG SPECIALTIES

    $141.39
    Two years of development and design went into producing a superior regulator, Fully assembled in the USA with domestic made electrical boards, Tested three different times during the assembly process to ensure the best possible product, Superior internal...
    21121076
    SKU:
    21121076
    Availability:
    Ships Same Business Day
    Weight:
    1.01 LBS
    AMPS:
    32 A
    BATTERY VOLTAGE:
    12 V
    COLOR/FINISH:
    BLACK
    UNITS:
    EACH
    MATERIAL:
    ALUMINUM
    PRODUCT NAME:
    REGULATOR
    RIDING STYLE:
    STREET
    $141.39
    Qty in Cart: 0
    Quantity:
    Price:
    $141.39
    Subtotal:
  • DRAG SPECIALTIES Regulator - XL '65-'77 - Black 12VBLK

    DRAG SPECIALTIES Regulator - XL '65-'77 - Black 12VBLK

    DRAG SPECIALTIES

    $141.39
    Two years of development and design went into producing a superior regulator, Fully assembled in the USA with domestic made electrical boards, Tested three different times during the assembly process to ensure the best possible product, Superior internal...
    21121078
    SKU:
    21121078
    Availability:
    Ships Same Business Day
    Weight:
    0.85 LBS
    COLOR/FINISH:
    BLACK
    MATERIAL:
    ALUMINUM
    RIDING STYLE:
    STREET
    BATTERY VOLTAGE:
    12 V
    AMPS:
    10 A
    PRODUCT NAME:
    REGULATOR
    UNITS:
    EACH
    $141.39
    Qty in Cart: 0
    Quantity:
    Price:
    $141.39
    Subtotal:
  • DRAG SPECIALTIES Regulator - XL '65-'77 - Chrome 12VCHR

    DRAG SPECIALTIES Regulator - XL '65-'77 - Chrome 12VCHR

    DRAG SPECIALTIES

    $155.95
    Two years of development and design went into producing a superior regulator, Fully assembled in the USA with domestic made electrical boards, Tested three different times during the assembly process to ensure the best possible product, Superior internal...
    21121079
    SKU:
    21121079
    Availability:
    Ships Same Business Day
    Weight:
    0.90 LBS
    BATTERY VOLTAGE:
    12 V
    COLOR/FINISH:
    CHROME
    MATERIAL:
    ALUMINUM
    RIDING STYLE:
    STREET
    AMPS:
    10 A
    PRODUCT NAME:
    REGULATOR
    UNITS:
    EACH
    $155.95
    Qty in Cart: 0
    Quantity:
    Price:
    $155.95
    Subtotal:
  • DRAG SPECIALTIES Regulator Mount - Harley Davidson - Black 2112-0927

    DRAG SPECIALTIES Regulator Mount - Harley Davidson - Black 2112-0927

    DRAG SPECIALTIES

    $67.59
    Allows the regulator to be mounted down and back out of sight, Optional 10-24 holes on back of mount for ground wire, Made in the U.S.A.
    21120927
    SKU:
    21120927
    Availability:
    Ships Same Business Day
    Weight:
    0.55 LBS
    PRODUCT NAME:
    MOUNT
    TYPE:
    REGULATOR
    UNITS:
    EACH
    MATERIAL:
    ALUMINUM
    RIDING STYLE:
    STREET
    COLOR/FINISH:
    GLOSS BLACK
    $67.59
    Qty in Cart: 0
    Quantity:
    Price:
    $67.59
    Subtotal:
  • DRAG SPECIALTIES Alternator Rotor - Harley Davidson 29900038

    DRAG SPECIALTIES Alternator Rotor - Harley Davidson 29900038

    DRAG SPECIALTIES

    $199.63
    Feature encapsulated magnets in a reinforced steel shell, Direct OEM replacements
    21121314
    SKU:
    21121314
    Availability:
    Ships Same Business Day
    Weight:
    5.60 LBS
    BATTERY VOLTAGE:
    12 V
    MATERIAL:
    STEEL
    TYPE:
    ALTERNATOR
    UNITS:
    EACH
    AMPS:
    20 A
    PRODUCT NAME:
    ROTOR
    RIDING STYLE:
    STREET
    $199.63
    Qty in Cart: 0
    Quantity:
    Price:
    $199.63
    Subtotal:
  • DRAG SPECIALTIES Regulator - Touring '17-'20 - Black 74700025B

    DRAG SPECIALTIES Regulator - Touring '17-'20 - Black 74700025B

    DRAG SPECIALTIES

    $239.15
    High-reliability 12V voltage regulators feature rugged aluminum alloy construction, Provide accurately regulated voltage under all electrical loads, have no relay contacts to wear or become maladjusted and are environmentally sealed for protection...
    21121316
    SKU:
    21121316
    Availability:
    Ships Same Business Day
    Weight:
    1.85 LBS
    RIDING STYLE:
    STREET
    AMPS:
    -
    COLOR/FINISH:
    BLACK
    MATERIAL:
    ALUMINUM
    TYPE:
    CHARGE AND VOLTAGE REGULATOR
    BATTERY VOLTAGE:
    12 V
    PRODUCT NAME:
    REGULATOR
    UNITS:
    KIT
    Qty in Cart: 0
    Quantity:
    Price:
    $239.15
    Subtotal:
  • DRAG SPECIALTIES Regulator - '18-'20 Softail - Chrome 74700031C

    DRAG SPECIALTIES Regulator - '18-'20 Softail - Chrome 74700031C

    DRAG SPECIALTIES

    $179.87
    High-reliability 12V voltage regulators feature rugged aluminum alloy construction, Provide accurately regulated voltage under all electrical loads, have no relay contacts to wear or become maladjusted and are environmentally sealed for protection...
    21121317
    SKU:
    21121317
    Availability:
    Ships Same Business Day
    Weight:
    1.60 LBS
    RIDING STYLE:
    STREET
    BATTERY VOLTAGE:
    12 V
    PRODUCT NAME:
    REGULATOR
    AMPS:
    -
    COLOR/FINISH:
    CHROME
    MATERIAL:
    ALUMINUM
    TYPE:
    CHARGE AND VOLTAGE REGULATOR
    UNITS:
    KIT
    $179.87
    Qty in Cart: 0
    Quantity:
    Price:
    $179.87
    Subtotal:
  • DRAG SPECIALTIES Regulator - '18-'20 Softail - Black 74700031B

    DRAG SPECIALTIES Regulator - '18-'20 Softail - Black 74700031B

    DRAG SPECIALTIES

    $176.75
    High-reliability 12V voltage regulators feature rugged aluminum alloy construction, Provide accurately regulated voltage under all electrical loads, have no relay contacts to wear or become maladjusted and are environmentally sealed for protection...
    21121318
    SKU:
    21121318
    Availability:
    Ships Same Business Day
    Weight:
    1.60 LBS
    PRODUCT NAME:
    REGULATOR
    RIDING STYLE:
    STREET
    TYPE:
    CHARGE AND VOLTAGE REGULATOR
    AMPS:
    -
    MATERIAL:
    ALUMINUM
    BATTERY VOLTAGE:
    12 V
    COLOR/FINISH:
    BLACK
    UNITS:
    KIT
    $176.75
    Qty in Cart: 0
    Quantity:
    Price:
    $176.75
    Subtotal:
  • DRAG SPECIALTIES 54A High-Output - Charging System 54A-1B

    DRAG SPECIALTIES 54A High-Output - Charging System 54A-1B

    DRAG SPECIALTIES

    $460.67
    Engineered to provide 30% more power than stock system at idle, 54A output at 4000 rpm provides enough power to eliminate dimming lights, reduced audio performance and under-performing heated gear, Maximum power output of 793 watts (based on constant...
    21121205
    SKU:
    21121205
    Availability:
    Ships Same Business Day
    Weight:
    11.70 LBS
    RIDING STYLE:
    STREET
    PRODUCT NAME:
    CHARGING SYSTEM
    BATTERY VOLTAGE:
    12 V
    COLOR/FINISH:
    BLACK
    UNITS:
    KIT
    AMPS:
    54 A
    $460.67
    Qty in Cart: 0
    Quantity:
    Price:
    $460.67
    Subtotal:
  • DRAG SPECIALTIES Alternator Rotor - Harley Davidson R29943-06

    DRAG SPECIALTIES Alternator Rotor - Harley Davidson R29943-06

    DRAG SPECIALTIES

    $137.23
    Feature encapsulated magnets in a reinforced steel shell, Direct OEM replacements
    21120453
    SKU:
    21120453
    Availability:
    Ships Same Business Day
    Weight:
    4.23 LBS
    TYPE:
    ALTERNATOR
    UNITS:
    EACH
    PRODUCT NAME:
    ROTOR
    RIDING STYLE:
    STREET
    BATTERY VOLTAGE:
    12 V
    MATERIAL:
    STEEL
    AMPS:
    50 A
    $137.23
    Qty in Cart: 0
    Quantity:
    Price:
    $137.23
    Subtotal:
  • DRAG SPECIALTIES Alternator - Kit - 38A MW53-55

    DRAG SPECIALTIES Alternator - Kit - 38A MW53-55

    DRAG SPECIALTIES

    $393.07
    38A system is great for new customs or stock replacement, Regulator features a bright chrome finish
    21120096
    SKU:
    21120096
    Availability:
    Ships Same Business Day
    Weight:
    9.58 LBS
    BATTERY VOLTAGE:
    12 V
    UNITS:
    KIT
    COLOR/FINISH:
    CHROME
    RIDING STYLE:
    STREET
    AMPS:
    38 A
    PRODUCT NAME:
    CHARGING SYSTEM
    $393.07
    Qty in Cart: 0
    Quantity:
    Price:
    $393.07
    Subtotal:
  • Total: items /

Adding your products to cart

Big Power, Nice Sound!

Picked up a Pro Circuit pipe and silencer for my YZ125 it’s a game changer. The power feels way better and the sound is awesome.

Tyler D. - 06/12

Perfect Fit

First time ordering here and dang y’all knocked it outta the park! The wheels fit my Ranger UTV perfect, and I’ll definitely be back for more 5 stars all day!

Sarah L. - 08/24

Fast Shipping!!

Ordered on a Monday, and it was on my doorstep by Wednesday! Super impressed with how fast the shipping was.

Jason P. - 09/13

Helps keep cool, works great!

Bought the dual pass Allstar radiator for my build, and it’s been solid. Keeps the engine running cool even on the hottest days no complaints here!

Jake M. - 05/21

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