Cycle Electrics Rectifier/Regulator for Shovelhead (early 78). 14.25v at idle, 14.26v at 2500 rpm. Great stuff!! Old OEM unit stopped regulating and was putting +20v into the battery.
Cycle Electric Regulator - Harley Big Twin 1976-1980
About Cycle Electric
Cycle Electric manufactures American-made charging system components for V-twins — generators, alternators, regulators and stators — and is a common answer when an older Harley will not hold a charge.
Maintain consistent charging across your V-twin's electrical system with this Cycle Electric Regulator, specifically engineered for 1976-1980 Harley-Davidson Big Twin models. This regulator is built with military-spec assembly processes and rugged materials, ensuring dependable service life and stable power delivery.
Why riders pick this
- Handles overloads and continuous operation with ease
- Military-spec assembly for maximum durability
- Engineered for a low failure rate
- Maintains steady charging output
- Direct replacement for stock regulator
A stable electrical system is fundamental to the reliable operation of any Harley, especially classic Big Twin models. This Cycle Electric regulator is designed to effectively manage alternator output, preventing both undercharging and overcharging of your battery. Its robust construction means it can handle the continuous demands of the road, keeping your vintage iron running smoothly.
Reliable Power Management
- Rugged design endures overloads and continuous operation
- Built with military-spec assembly processes for durability
- Engineered for a low failure rate and extended service life
- Maintains steady charging across the electrical system
- Compact form factor for straightforward installation
Upgrade Your Classic Big Twin
If you're restoring a classic Big Twin or just need a reliable replacement for a failing component, this Cycle Electric regulator offers a significant upgrade. It's designed to provide consistent voltage control, protecting your battery and other electrical components from harmful fluctuations. Trust in a component built with attention to detail and a focus on long-term performance for your Harley.
Specifications
- Brand: Cycle Electric
- Manufacturer Part #: CE-203
- Length: 8.2 in
- Width: 4.2 in
- Height: 1.8 in
- Weight: 1.16 lbs
Common questions
Will this regulator fit my 1981 Harley-Davidson Big Twin?
No, this Cycle Electric regulator is specifically designed for 1976-1980 Big Twin models. Newer years utilize different electrical system designs.
What is the primary function of a voltage regulator on a motorcycle?
The regulator's main job is to control the output voltage from the alternator, preventing your battery from overcharging and protecting all electrical components from voltage spikes.
Is this regulator a direct bolt-in replacement for my original?
Yes, this Cycle Electric regulator is designed to mount directly in place of the original Harley regulator, using the stock mounting points and existing harness connections.
Ordering from Vtwinbikers
- Brand new, sourced through authorized US distribution — never used, never grey-market.
- Not sure it fits? Use Shop by Bike to filter by your year and model, or email us and we will confirm before you order.
- Harley-Davidson and Indian Motorcycle is all we do, so you are talking to people who ride what you ride.
| BRAND | Cycle Electric |
| TYPE | Electrical |
| SKU | 273-1201 |
| WEIGHT | 1.16 lb |
MADE IN USA
Perfect fit. Quick and easy instalation. Now showing 13.7 volts when running
Was happy with the product
Good quality product, would recommend
Works as it should and is made in USA.
You can’t beat Cycle Electric for quality parts!