The best motorcycle auxiliary brake light depends on your mounting space and whether you need brake-only visibility or added running and turn-signal functions. The NEOCHIAEVO B6 is best for a compact license-plate mount with running and brake modes; DENALI suits riders seeking a slim plate-mounted light with CANsmart compatibility. Eagle Lights adds a strobing brake feature, while KEMIMOTO combines brake and turn signals. Rudyness is a simple option for riders who want a rugged-looking, bracket-mounted auxiliary light.
| Product | Best For | Standout Feature |
|---|---|---|
| NEOCHIAEVO B6 | Compact plate mounting | Running and brake light functions |
| DENALI B6 | DENALI system users | Compatible CANsmart setup |
| Eagle Lights 8900TL-PLATE | Attention-getting brake signal | Strobing brake light |
| KEMIMOTO Universal Light | Combined rear signaling | Brake and turn signals |
| Rudyness B6 | Bracket-based installation | Rugged housing and included brackets |
NEOCHIAEVO B6 Dual License Plate Light

The NEOCHIAEVO B6 is best for riders who want an unobtrusive auxiliary light mounted at the license plate. Its low-profile design bolts to the bottom of the plate, and it functions as both a running light and a brake light.
The product listing specifies six 1-watt LEDs and a claimed output of 870 lumens. That combination makes it a useful choice for riders looking for a compact light with two rear-lighting functions, rather than a brake-only unit.
- Best for: A compact license-plate installation with running and brake modes.
- Why it stands out: Low-profile mounting and listed LED output.
- Limitation: The listed mounting position is the bottom of the license plate, so check available space before buying.
DENALI B6 LED Auxiliary Brake Light

The DENALI B6 is best for riders who prefer a slim, plate-mounted brake light and may use compatible DENALI electronics. Its housing mounts above or below the license plate, offering flexibility in placement while keeping the light close to the rear of the motorcycle.
The listing identifies compatibility with compatible DENALI CANsmart Controllers and B6 wiring adapters. Choose this model if that system compatibility matters to your setup. The available product details do not specify brightness figures or included mounting hardware, so confirm installation requirements before purchase.
- Best for: Riders seeking a compact license-plate light, especially those using compatible DENALI equipment.
- Why it stands out: Above- or below-plate mounting and stated CANsmart compatibility.
- Limitation: CANsmart use requires compatible controllers and wiring adapters.
Eagle Lights 8900TL-PLATE Strobing Light

The Eagle Lights 8900TL-PLATE is best for riders who want a brake signal designed to draw attention through a strobing pattern. The product listing describes it as a license-plate running light with a strobing brake light and high-power LEDs intended to improve visibility in daytime and nighttime conditions.
Its stated weather-oriented design is intended to withstand rain, dirt, and rough rides. This may suit riders who regularly encounter changing road conditions, though the listing does not provide a specific waterproof rating or detailed mounting dimensions.
- Best for: Riders who want a strobing brake-light function.
- Why it stands out: Combines license-plate running-light use with a flashing brake alert.
- Limitation: Check local lighting rules and the product’s installation instructions before using a strobing brake pattern.
KEMIMOTO Brake Light With Turn Signals

The KEMIMOTO light is best for riders seeking a compact rear unit that adds turn-signal functions along with braking visibility. The listing describes a 12-volt light with amber LED beads for turn signaling and a brake-light function. Its CNC-machined aluminum-alloy construction has an anodized surface, and the product is listed as IP67 waterproof.
Choose this option if combining rear signaling functions in one light is more important than choosing a dedicated license-plate auxiliary brake light. The stated brightness figures are specific to the listing; actual visibility can depend on mounting position and wiring.
- Best for: Riders who want brake and turn-signal functions together.
- Why it stands out: Aluminum-alloy construction and a listed IP67 rating.
- Limitation: Confirm the wiring and signal arrangement match your motorcycle before installation.
Rudyness B6 Dual License Plate Light

The Rudyness B6 is best for riders looking for a straightforward auxiliary light with mounting brackets. Its listing describes a rugged black housing, clear lens covers, and bright LED bulbs. It is marketed for motorcycles, ATVs, and off-road vehicles.
The product is described as designed for universal fitment on most motorcycles, ATVs, and off-road vehicles, but that wording does not guarantee it will fit every plate or tail section. Measure the mounting area and review the bracket arrangement before choosing it.
- Best for: Riders who want a bracket-mounted light for a motorcycle or compatible off-road vehicle.
- Why it stands out: The listing includes mounting brackets and identifies a protective housing and lens.
- Limitation: “Universal” fitment still requires checking dimensions and mounting points.
Buying Guide: How to Choose a Motorcycle Auxiliary Brake Light
Where will the light mount?
License-plate lights are useful when you want a compact position near the rear of the bike. Check whether the design mounts above or below the plate and whether there is enough clearance for the light, wiring, and fasteners. Bracket-based options may offer another installation route, but verify that the brackets align with your motorcycle.
Do you need brake-only or multiple functions?
A dedicated auxiliary brake light keeps the main purpose clear. Running-light and brake-light models add a steady rear-light function, while products with turn signals combine more functions in one unit. Before purchasing a multifunction light, confirm its wiring instructions and how the signals will integrate with the motorcycle.
Should the brake light strobe?
A strobing brake pattern is intended to attract attention, as on the Eagle Lights option. If you are considering this feature, check applicable local requirements and make sure the pattern is appropriate for your motorcycle. A steady brake-light function may be preferable for riders who do not want a flashing alert.
What should you verify before installation?
Confirm the vehicle’s electrical requirements, mounting dimensions, wire connections, and any controller or adapter needs. Do not assume that a product advertised as universal will fit every motorcycle. Follow the product instructions, and consider professional installation if you are unsure how to connect the light safely.
Frequently Asked Questions
What does an auxiliary motorcycle brake light do?
It adds a rear brake-light point intended to make braking more noticeable to drivers behind the motorcycle.
Can an auxiliary brake light also work as a running light?
Some models do. The NEOCHIAEVO B6 is listed as providing both running-light and brake-light functions; check each product’s wiring details.
Do all auxiliary brake lights mount to the license plate?
No. Several models in this selection are designed for license-plate mounting, while others may use brackets or different mounting arrangements. Check the product dimensions and instructions.
Are motorcycle auxiliary brake lights waterproof?
Water resistance varies by product. KEMIMOTO is listed with an IP67 rating, while other listings describe weather resistance without giving a specific rating. Verify the stated protection level for the model you choose.
What should I check before buying a multifunction light?
Check voltage requirements, wire functions, turn-signal configuration, mounting fit, and whether additional adapters or controllers are required.