• Angled view of the MOONSMC Low Profile V4 tail light with a smoked lens.
  • Angled view of the MOONSMC Low Profile V4 tail light with a red lens and visible LED array.
  • Angled view of the MOONSMC Low Profile V4 tail light with a clear lens and visible LED array.
  • Side view of the smoked V4 tail light showing its low-profile housing.
  • Front view of the smoked MOONSMC Low Profile V4 tail light.
  • Red running-light pattern on a MOONSMC V4 tail light installed on a motorcycle rear fender.
  • Bright red brake-light pattern on a MOONSMC V4 tail light installed on a motorcycle rear fender.
  • MOONSMC V4 tail light displaying red running lights and an amber turn-signal segment.
  • Smoked V4 tail light installed beneath a license plate on a silver motorcycle rear fender.
  • Angled close-up of a smoked V4 tail light mounted on a silver motorcycle rear fender.
  • Close-up of MOONSMC branding and LEDs inside the Low Profile V4 tail light.
  • Rear view of V4 tail light plugs and wiring labeled for 1999-and-newer Harley models.
  • Rear view of V4 tail light wiring and connector labeled for 1998 and older models.
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MOONSMC

MOONSMC® Low Profile LED Tail Light V4 | Sequential + Strobe

¥30,500 JPY
¥30,500 JPY
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MOONSMC® Low Profile LED Tail Light V4

Next-level visibility, clean styling, and safety-first performance for Harley-Davidson riders. The MOONSMC® Low Profile LED Tail Light V4 upgrades your rear lighting with ultra-bright output, integrated sequential signaling, and an optional strobe brake mode, all in a sleek, low-profile package.

⚡
10× Brighter LED Chips
High-output LEDs help keep you seen day or night.
➡️
Integrated Sequential Turn Signals
Clean rear end + modern signaling built in.
🚨
Optional Strobe Brake Function
Brake triggers 5 rapid flashes, then goes solid when enabled.
💎
Diamond-Pattern Running Light
Distinct presence with a new low-profile look.
🛡️
Fully Sealed & Weather-Resistant
Sealed housing helps prevent water intrusion and corrosion.
🔌
Plug-and-Play Install
Designed for a simple install on compatible models. Certain Softail M8 applications require an additional harness, bezel, and/or load equalizer.

What’s Included / Features

  • Low-profile LED tail light assembly
  • Ultra-bright LED output
  • Integrated sequential left and right turn signals
  • Optional strobe brake mode with 5 rapid flashes followed by solid brake output when enabled
  • Diamond-pattern running light
  • License plate window LED lighting
  • Fully sealed housing for weather resistance
  • Plug-and-play design on compatible applications
  • Backed by MOONSMC® quality

 

Watch the V4 tail light video on YouTube

Fitment

Compatible with 1999–Current Harley-Davidson® models including Dyna, Softail M8, Sportster & Baggers.

Compatible with 1987–1998 Harley-Davidson® models including Dyna, FXR and Sportster when the correct V4 wiring option is selected.

Certain Softail M8 applications require an additional rear fender harness, bezel, and/or load equalizer for proper turn signal operation. Review the year-specific requirements below before ordering.

🔌 2018–2024 Softail M8 FXLR / FXLRS / FXLRST
These models require the MOONSMC® 2018–2024 M8 Softail Rear Fender Wire Harness in order for the V4 integrated turn signals to operate properly. The harness provides the proper power and signal routing for the V4 rear lighting setup.

👉 Shop the MOONSMC® 2018–2024 M8 Softail Rear Fender Wire Harness

🧱 2020–2024 Softail M8 FXLRST Low Rider ST
Low Rider ST models require the 2018–2024 M8 Rear Fender Wire Harness and the MOONSMC® Black Tail Light Base Plate Bezel for Softail M8 when installing the V4 tail light.

👉 Shop the MOONSMC® Black Tail Light Base Plate Bezel

🔌 2025–Current Softail M8 Gen2 Rear Fender Harness
If you have a 2025-current Softail M8, use the MOONSMC® 2025-Current M8 Softail Gen2 Rear Fender Wire Harness with your compatible rear LED lighting setup. The 2025-current Gen2 rear lighting system uses a different wiring configuration than the 2018–2024 models, so the earlier M8 rear fender harness should not be used for these applications.

👉 Shop the MOONSMC® 2025-Current M8 Softail Gen2 Rear Fender Wire Harness

⚡ 2025–Current Softail M8 LED Lighting Load Equalizer
2025-current Softail M8 models also require the MOONSMC® LED Lighting Load Equalizer when upgrading to the V4 LED tail light and integrated turn signals. The factory electrical system monitors lighting load, and the lower power draw of LED lighting can cause hyper-flash, bulb-out warnings, or lighting fault codes. The load equalizer restores the electrical load the factory system expects for proper LED operation.

👉 Shop the MOONSMC® Softail M8 2025-Current LED Lighting Load Equalizer

Softail M8 Quick Fitment Guide

  • 2018–2024 FXLR / FXLRS:
    V4 Tail Light + 2018–2024 M8 Rear Fender Wire Harness
  • 2020–2024 FXLRST:
    V4 Tail Light + 2018–2024 M8 Rear Fender Wire Harness + Black Tail Light Base Plate Bezel
  • 2025–Current Softail M8:
    V4 Tail Light + 2025-Current Gen2 Rear Fender Wire Harness + 2025-Current Softail M8 LED Lighting Load Equalizer

If you are unsure which harness or supporting parts your bike requires, contact us with your year and model before ordering and we’ll help confirm the correct setup.

💡 Older Harley Models: Hyper-Flash or Bulb-Out Errors
Some older Harley-Davidson electrical systems may require our standard MOONSMC® Plug-and-Play Load Equalizer when converting to LED lighting. If your signals flash rapidly or your dash displays a bulb-out or lighting error, check the load equalizer fitment for your specific year and model.

👉 Shop the MOONSMC® Plug-and-Play Load Equalizer

Upgrade your rear lighting with a clean, modern tail light that prioritizes visibility and safety without the bulky stock look.

Harley-Davidson® is a registered trademark of Harley-Davidson Motor Company. MOONSMC® is not affiliated with or endorsed by Harley-Davidson.

* PATENT PENDING 29/764,739 *

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