1. Electrical & Ignition Components Offered
  2. sku: 8044001454483633
  3. COMPU FIRE MN/R73C

COMPU-FIRE MN-R73C Phase Charging Fxstc Ar MN/R73C

fits make: Harley, Davidson. year: 1986–1991.

R73c Compu-fire Mn/r73c 3 Phase Charging System For 1986-1991 Harley Davidson Fxstc Ar

( Brand: Compu-fire ), ( Manufacturer Part Number: MN/R73C ), ( Compatible Year: 1991 1990 1989 1988 1987 1986 ), ( Compatible Make: Harley Davidson ), ( Compatible Model: Fxstc Softail Custom ), ( Bundle Description: 1 Pc Genuine Compu-fire 3 Phase Charging System ), ( Type: 3 Phase Charging System ), ( Core Charge: Free No Core Charge ), ( Fitment Type: Direct Replacement )

Review COMPU FIRE Mn/r73c Phase Charging System Harley Davidson Fxstc Ar fits 1986–1991

The Compu-Fire MN/R73C Phase Charging System is a high-performance charging solution specifically designed for Harley-Davidson FXSTC models produced between 1986 and 1991. This charging system is an essential upgrade for riders who want to ensure optimal battery health and reliable engine performance.

The MN/R73C Phase Charging System is an advanced 3-phase charging system. Unlike traditional 2-phase charging systems, this 3-phase charging system delivers a more efficient and consistent charge to the battery. The charging system features an intelligent control module that automatically adjusts charging voltage and current based on the battery's state of charge. This results in faster charging times and a more stable voltage output, which is beneficial for extended rides or touring.

The Compu-Fire MN/R73C Phase Charging System is designed to work seamlessly with Harley-Davidson's electrical systems. It comes with a wiring harness that plugs directly into the factory connector, making installation quick and easy. The system is also compatible with factory accessories, such as heated grips, turn signals, and other electrical components.

One of the key features of the MN/R73C Phase Charging System is its ability to provide a reliable charge in various riding conditions. It has a temperature compensation feature that adjusts charging performance based on ambient temperature, ensuring optimal battery health in cold or hot weather. Additionally, the system includes a voltage regulator that prevents overcharging, which can damage the battery and reduce its lifespan.

Another advantage of the Compu-Fire MN/R73C Phase Charging System is its durability. The system is built with high-quality components that can withstand the rigors of Harley-Davidson riding. It comes with a heavy-duty alternator that delivers reliable power output and can handle the demands of modern accessories and electrical systems. The system also includes a robust mounting bracket that securely holds the alternator in place, ensuring a stable and vibration-free installation.

In summary, the Compu-Fire MN/R73C Phase Charging System is a top-of-the-line charging solution for Harley-Davidson FXSTC models produced between 1986 and 1991. It delivers faster charging times, more consistent voltage output, and improved battery health through its advanced 3-phase charging technology. Its intelligent control module, temperature compensation feature, and voltage regulator ensure reliable charging performance in various riding conditions. The system's durable design and easy installation make it a must-have upgrade for any Harley-Davidson rider who wants to maximize their riding experience.

Compu-Fire MN/R73C Phase Charging System for 1986-1991 Harley-Davidson FXSTC AR (Softail Custom): A Deep Dive into the Pros, Cons, and Conclusion

The Compu-Fire MN/R73C Phase Charging System is a popular aftermarket upgrade for Harley-Davidson motorcycles, including the 1986-1991 FXSTC AR (Softail Custom). This charging system is designed to improve battery charging efficiency and extend battery life. Let's examine its key features, advantages, and potential drawbacks.

Pros:

1. Improved Charging Efficiency: The Compu-Fire MN/R73C Phase Charging System employs a two-stage charging process, which allows for more efficient charging. It provides a faster charge rate during the initial bulk charging stage and a slower charge rate during the absorption stage, ensuring that the battery is fully charged.

2. Extended Battery Life: By optimizing the charging process, the Compu-Fire system helps prevent overcharging and undercharging, which can significantly extend the life of the battery. This is particularly important for older motorcycles, as their batteries may not be as efficient as newer ones.

3. Reduced Maintenance: With improved charging efficiency and extended battery life, the Compu-Fire system can help reduce the frequency of battery replacements, making it a cost-effective solution in the long run.

4. Enhanced Performance: A well-charged battery delivers optimal performance, ensuring that the motorcycle starts easily and runs smoothly.

Cons:

1. Cost: The Compu-Fire MN/R73C Phase Charging System is a more expensive option compared to the standard charging systems that come with most Harley-Davidson motorcycles.

2. Installation Complexity: The installation process for the Compu-Fire system is more complex than that of a standard charging system. It requires some electrical knowledge and skills, and it may take longer to install.

3. Compatibility: While the Compu-Fire system is designed to work with a wide range of Harley-Davidson motorcycles, including the 1986-1991 FXSTC AR, it is essential to verify compatibility before making a purchase to avoid potential compatibility issues.

Conclusion:

The Compu-Fire MN/R73C Phase Charging System offers several advantages, including improved charging efficiency, extended battery life, reduced maintenance, and enhanced performance. However, it also comes with some disadvantages, such as a higher cost and more complex installation process. Ultimately, the decision to purchase this charging system depends on an individual's priorities, budget, and technical abilities. For those who value the benefits of a more efficient charging system and extended battery life, the Compu-Fire MN/R73C Phase Charging System may be a worthwhile investment.

Recommendation:

If you own a 1986-1991 Harley-Davidson FXSTC AR and are looking to improve your motorcycle's charging system, consider the Compu-Fire MN/R73C Phase Charging System. Before making a purchase, ensure that the system is compatible with your motorcycle and weigh the benefits against the costs and installation complexity. If you have the necessary skills and budget, this system can help enhance your riding experience by providing a more efficient charging process and extended battery life.

part # mnr73c price

  • $614.25

specifications ignitioncompo:

  • for makes: Harley, Davidson
  • for years: 1986-1991
  • brand: Compu-fire
  • manufacturer part number: MN/R73C
  • compatible year: 1991 1990 1989 1988 1987 1986
  • compatible make: Harley Davidson
  • compatible model: Fxstc Softail Custom
  • bundle description: 1 Pc Genuine Compu-fire 3 Phase Charging System
  • type: 3 Phase Charging System
  • core charge: Free No Core Charge
  • fitment type: Direct Replacement

shipping ignitioncompo:

  • service: Standard
  • type: Fixed
  • cost: $0.00
  • class: Standard
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  • options: Ship-to-home
  • started: January 11, 2026
  • availability: In Stock
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  • quantity: 1

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  • Motorcycle Scooter Parts Accessories > Electrical Ignition Components > Other Electrical Ignition Components
for makes: harley, davidson, for years: 1986-1991, compatible year: 1991 1990 1989 1988 1987 1986, compatible make: harley davidson, compatible model: fxstc softail custom, bundle description: 1 pc genuine compu-fire 3 phase charging system, type: 3 phase charging system, core charge: free no core charge, fitment type: direct replacement,
category: motorcycle parts > motorcycle scooter parts accessories > electrical ignition components, sku: 8044001454483633,

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