Upgrading your Harley-Davidson to an LED headlight is one of the most effective ways to dramatically increase visibility, safety, and style. Whether you ride at night, commute, or simply want a cleaner modern look, LED headlights outperform factory halogen bulbs in every category.
But Harley-Davidson fitment can be confusing. Different models use different sizes, some bikes require mounting brackets, and certain year ranges need wiring adapters. This guide covers everything you need to know before upgrading—fitment, installation, troubleshooting, FAQs, and the best LED options for your specific motorcycle.
Why Upgrade to an LED Headlight on a Harley-Davidson?
Modern LED headlights provide massive improvements over stock halogen lights. Here are the most important benefits:
1. Increase Night Visibility
LEDs project a wider, brighter, and more consistent beam pattern, offering up to 400% more brightness than stock bulbs. Riders benefit from a longer throw distance and enhanced side visibility.
2. Instant-On Performance
LEDs illuminate instantly—critical for quick lane changes, tunnel riding, and sudden braking.
3. Extremely Long Lifespan
LED headlights last over 30,000 hours, compared to 400–500 hours from halogen bulbs. You’ll likely never replace them again.
4. Lower Power Draw
LEDs reduce strain on your battery and charging system, particularly valuable on older Harley models.
5. Modern Custom Look
LED headlights instantly transform your bike’s front end, giving it a premium, custom look.
Harley-Davidson LED Headlight Sizes: What You Must Know
Harley-Davidson uses three primary headlight sizes:
- 5.75-inch LED headlights – used on most Sportsters, Dynas, and some Softails
- 7-inch LED headlights – used on Road King, Street Glide, Electra Glide, and Touring models
- 4.5-inch passing lamps – used on Touring bikes with auxiliary lights
Some models require mounting brackets, nacelle adapters, or wiring harnesses depending on the year.
Harley-Davidson LED Headlight Fitment Guide (Model-by-Model)
This is the most complete Harley-Davidson LED headlight fitment guide available for 2025.
✔ 7-Inch Harley-Davidson LED Headlight Fitment
Compatible Models:
Touring Models (Require a 7" LED Headlight)
- Road King (all models)
- Road King Special
- Street Glide
- Street Glide Special
- Electra Glide Standard
- Electra Glide Ultra Classic
- Ultra Limited
- Ultra Limited Low
- Tri Glide Ultra
- Most CVO models (except adaptive LED models)
Fitment Notes:
- 2014–present models are typically plug-and-play.
- 1994–2013 Road King may require a mounting ring.
- Certain older models may need an H4 to H9/H11 harness.
✔ 5.75-Inch Harley-Davidson LED Headlight Fitment
Sportster Models (Require 5.75")
- Iron 883
- Iron 1200
- 48 (Forty-Eight)
- SuperLow
- Roadster
- Nightster
- Sportster Custom
- XR1200
Dyna Models (Require 5.75")
- Street Bob
- Super Glide
- Super Glide Custom
- Wide Glide
- Low Rider (pre–2018)
- Fat Bob (requires dual-headlight kit)
Softail Models (Require 5.75")
- Softail Standard
- Softail Slim (pre–2018)
- Softail Deluxe (select years)
- Breakout (pre–2018)
- Night Train
- M8 Softail Street Bob (uses 5.75")
Fitment Notes: Certain Softails with nacelles may require a retaining ring.
✔ 4.5-Inch Passing Lamp Fitment
Compatible with models using factory auxiliary lights:
- Road King
- Electra Glide
- Ultra Classic
- Ultra Limited
- Heritage Softail (year dependent)
Special Fitment Requirements
1. 2014+ Road King & Street Glide
Direct plug-and-play installation.
2. 1994–2013 Road King
Most models will require:
- 7" mounting ring
- Optional wiring adapter
3. Fat Bob Models
These require a special dual-headlight LED conversion kit.
4. Softail Deluxe & Heritage Models
Certain years require a 7" conversion bracket due to nacelle housing depth.
Best Eagle Lights LED Headlights for Harley-Davidson
Best 7" LED Headlights
- Eagle Lights Generation III 7" LED
- Eagle Lights Projection Series 7"
- Eagle Lights Infinity Beam 7"
Best 5.75" LED Headlights
- Eagle Lights Generation III 5.75"
- Daymaker®-style 5.75"
- Eagle Lights Projection Series
Best LED Passing Lamps
- Eagle Lights 4.5" LED Passing Lamps
- Optional: halo-equipped passing lamps
Harley-Davidson LED Headlight Installation Guide
Most Eagle Lights headlights are plug-and-play, but the steps below ensure a smooth installation.
Step-by-Step Installation Instructions
Step 1: Remove the Stock Headlight
- Remove the trim ring
- Disconnect the factory bulb
- Remove retaining hardware
Step 2: Install Any Required Brackets
Depending on year/model, you may need:
- 5.75" retaining ring
- 7" mounting ring
- H4 adapter
Step 3: Connect the LED Headlight
Plug the LED harness into the factory H4 connector.
Step 4: Mount the Headlight
Ensure wiring is not pinched and secure the bezel.
Step 5: Aim the Headlight
A properly aimed LED headlight ensures maximum visibility and safety.
Common LED Headlight Issues on Harley-Davidson (and Fixes)
1. LED Headlight Won’t Turn On
Likely causes:
- Loose wiring
- Incorrect ground
- Missing H4 adapter
- Blown fuse
2. Flickering
Solved with an anti-flicker canbus harness.
3. Hyperflash (if using LED turn signals)
Install a load equalizer or LED flasher relay.
4. Headlight Doesn’t Fit the Bucket
A mounting ring or bracket is required for certain models.
Harley-Davidson LED Headlight Fitment Table
| Harley-Davidson Model | Headlight Size | Additional Parts Needed |
|---|---|---|
| Road King (’94–’13) | 7" | Mounting ring recommended |
| Road King (’14–present) | 7" | None |
| Street Glide | 7" | None |
| Electra Glide | 7" | None |
| Ultra Classic / Ultra Limited | 7" + 4.5" | None |
| Sportster (various models) | 5.75" | None |
| Dyna Street Bob | 5.75" | None |
| Dyna Fat Bob | Dual | Special LED conversion kit |
| Heritage Softail | 7" | May require mounting ring |
| Softail Standard | 5.75" | None |
Frequently Asked Questions (People Also Ask)
What size LED headlight fits a Harley-Davidson?
Harleys use either a 5.75-inch or 7-inch LED headlight. Touring models use 7", while Sportster and Dyna models use 5.75".
Are LED headlights plug-and-play on Harleys?
Most Eagle Lights LEDs are plug-and-play. Older models may require a mounting ring or adapter harness.
Are LED headlights worth it on a Harley?
LED headlights provide brighter output, better visibility, lower power draw, and longer lifespan—making them one of the best upgrades available.
Why is my LED headlight flickering on my Harley?
Flickering is caused by Harley’s electrical system detecting low voltage draw. An anti-flicker canbus harness fixes the issue.
Can you put a 7-inch LED headlight on any Harley?
No. Only models with a 7-inch housing accept 7" headlights. Others require 5.75" or a conversion kit.
Final Thoughts
Upgrading your Harley-Davidson to an LED headlight is one of the best improvements you can make for safety, visibility, and style. Whether you ride a Road King, Iron 883, Street Glide, or Street Bob, there is a perfect Eagle Lights LED headlight designed to fit your exact Harley model.
This fitment guide gives you the exact sizes, compatibility details, installation advice, and FAQs to ensure you choose the right LED upgrade the first time. Ride safer and see farther with Eagle Lights.
