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
- Cycle Electric Inc Rectifying Regulator Harley-Davidson CE-324 – High-output rectifying regulator; built-in rectifier for Big Twin and Sportster charging systems.
- Drag Specialties Regulator XL 92-93 Chrome 74523-92CHR – Chrome voltage regulator for 1992-1993 Sportster; direct OEM replacement with classic look.
- Drag Specialties Voltage Regulator FL/FLH MC-DRAG009 – Solid-state regulator for FL/FLH Touring; reliable charging for 1989-1999 models.
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
$141.39A failing regulator means inconsistent charging output, dead batteries, and electrical gremlins that'll strand you trackside or worse—damage expensive engine management systems. Drag Specialties engineered this regulator through two years of rigorous...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 -
DRAG SPECIALTIES Regulator - XL '04-'06 - Chrome 74490-04CHR
DRAG SPECIALTIES
$145.55A failing regulator will leave you stranded—or worse, cost you a race. DRAG Specialties engineered this XL regulator through two years of development and rigorous testing to deliver the voltage stability your Harley demands, especially under the...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 -
DRAG SPECIALTIES Regulator - XL '92-'93 - Chrome 74523-92CHR
DRAG SPECIALTIES
$145.55A regulator that fails mid-race costs you more than money—it costs you the race. This DRAG SPECIALTIES unit delivers the reliable charging performance your XL Harley demands, with domestic engineering and rigorous multi-stage testing built into every...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 -
DRAG SPECIALTIES Regulator - XL '91 - Black 74523-91BLK
DRAG SPECIALTIES
$141.39A reliable voltage regulator is foundational to consistent electrical performance, especially in high-demand racing applications where voltage fluctuations can compromise ignition timing and fuel delivery precision. This DRAG Specialties unit delivers...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 -
DRAG SPECIALTIES Regulator - XL '84-'90 - Black 74523-84BLK
DRAG SPECIALTIES
$141.39A voltage regulator failure leaves you stranded—and on the track, it costs you the race. The DRAG Specialties Regulator for XL models ('84-'90) delivers the electrical stability your bike demands, with domestic engineering and rigorous quality control to...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 -
DRAG SPECIALTIES Regulator - XL '84-'90 - Chrome 74523-84ACHR
DRAG SPECIALTIES
$145.55A voltage regulator that fails mid-ride costs you races and reliability. The DRAG Specialties XL Regulator is purpose-built for Harley big-twins, engineered through two years of development to deliver consistent electrical output under extreme conditions...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 -
DRAG SPECIALTIES Regulator - XL '09-'13 - Black 74711-08BLK
DRAG SPECIALTIES
$141.39A voltage regulator is critical to maintaining stable electrical output on your Harley—inconsistent charging can destroy batteries, drain electronics, and leave you stranded. The Drag Specialties XL Regulator delivers rock-solid performance through...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 -
DRAG SPECIALTIES Regulator - XL '94-'03 - Black 74523-94BLK
DRAG SPECIALTIES
$141.39A voltage regulator is critical to maintaining consistent electrical output across your charging system—underperformance here translates directly to battery drain, dim lighting, and unreliable ignition timing. This DRAG SPECIALTIES regulator was...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 -
DRAG SPECIALTIES Regulator - XL '94-'03 - Chrome 74490-00CHR
DRAG SPECIALTIES
$145.55A voltage regulator is critical to maintaining stable charging output across your electrical system—especially under high-demand conditions where inferior regulators fail. This DRAG Specialties unit delivers the reliability professional racers and...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
$145.55Qty in Cart: 0Quantity:Price:$145.55Subtotal: -
DRAG SPECIALTIES Regulator - XL '07-'08 - Black 74546-07BLK
DRAG SPECIALTIES
$141.39A quality voltage regulator is the foundation of reliable electrical performance in your XL Harley—it keeps your charging system stable under sustained load, whether you're cruising or hammering the throttle. This DRAG Specialties unit was engineered...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 -
DRAG SPECIALTIES Regulator - XL '65-'77 - Black 12VBLK
DRAG SPECIALTIES
$141.39A failing voltage regulator can leave you stranded or damage your entire electrical system mid-race. This DRAG SPECIALTIES regulator delivers stable 12V output across the full RPM range, ensuring reliable ignition, charging, and accessory performance...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 -
DRAG SPECIALTIES Regulator - XL '65-'77 - Chrome 12VCHR
DRAG SPECIALTIES
$155.95A failing charging system will leave you stranded, but an undersized regulator will strand you faster. This DRAG SPECIALTIES regulator handles the electrical demands of high-output alternators and auxiliary systems without voltage sag or premature...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
$155.95Qty in Cart: 0Quantity:Price:$155.95Subtotal: -
DRAG SPECIALTIES Regulator Mount - Harley Davidson - Black 2112-0927
DRAG SPECIALTIES
$67.59A voltage regulator doesn't have to dominate your engine bay. The DRAG SPECIALTIES Regulator Mount relocates your regulator discreetly beneath the frame, freeing up valuable real estate while maintaining full electrical functionality. Whether you're...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 -
DRAG SPECIALTIES Alternator Rotor - Harley Davidson 29900038
DRAG SPECIALTIES
$199.63A failing alternator rotor means inconsistent charging output and potential electrical system failures on the road—exactly what you can't afford on a performance build. This Drag Specialties rotor restores full OEM-spec output with encapsulated magnets...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 -
DRAG SPECIALTIES Regulator - Touring '17-'20 - Black 74700025B
DRAG SPECIALTIES
$239.15A reliable voltage regulator is critical to maintaining consistent electrical performance across your Touring's charging system, especially under demanding riding conditions or extended use with aftermarket accessories. This Drag Specialties unit...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
$239.15 -
DRAG SPECIALTIES Regulator - '18-'20 Softail - Chrome 74700031C
DRAG SPECIALTIES
$179.87A failing voltage regulator drains your electrical system's reliability and can leave you stranded mid-ride. The DRAG SPECIALTIES Regulator delivers consistent, precisely regulated 12V output under all operating conditions—eliminating the voltage...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 -
DRAG SPECIALTIES Regulator - '18-'20 Softail - Black 74700031B
DRAG SPECIALTIES
$176.75A failing voltage regulator compromises your entire electrical system—leaving you stranded with a dead battery or fried components mid-ride. The DRAG SPECIALTIES Regulator for '18-'20 Softails delivers rock-solid 12V regulation under all loads,...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 -
DRAG SPECIALTIES 54A High-Output - Charging System 54A-1B
DRAG SPECIALTIES
$460.67If you're running a heavily modified engine with aftermarket audio, heated gear, or forced induction, your stock charging system is likely struggling to keep up. The DRAG SPECIALTIES 54A High-Output Charging System delivers 30% more power at idle and...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 -
DRAG SPECIALTIES Alternator Rotor - Harley Davidson R29943-06
DRAG SPECIALTIES
$137.23A failing alternator rotor compromises your electrical system's ability to maintain consistent charge, leading to dimming lights, weak battery performance, and potential stalling at idle. This Drag Specialties rotor restores reliable power generation...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 -
DRAG SPECIALTIES Alternator - Kit - 38A MW53-55
DRAG SPECIALTIES
$393.07A reliable charging system is the foundation of any well-built custom or stock replacement engine. The DRAG SPECIALTIES 38A alternator delivers consistent output for modern electrical demands without overcomplicating your wiring harness. Whether you're...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
