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Heavy-Duty Metal Mounting Bracket for 2-1/2" Round Clearance Lights

Heavy-Duty Metal Mounting Bracket for 2-1/2" Round Clearance Lights

Item # BK55BB
Our Price: $5.56
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Shipping Weight: 0.4 lbs
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4-3/4" L x 4" W x 1-3/4" D; heavy-duty metal bracket; mounts 2-1/2" sealed lights 1-833-496-1390 to order Optronics accessories and parts part number BK55BB or order online at Free expert support on all Optronics products. Great prices and Fastest Shipping for Heavy-Duty Metal Mounting Bracket for 2-1/2" Round Clearance Lights. Accessories and Parts reviews from real customers.
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  • Reviews (18)
  • Q & A (0)
  • Videos (1)
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Optronics Accessories and Parts - BK55BB

  • Trailer Lights
  • Mounting Hardware
  • Brackets
  • Optronics
  • 2-1/2 Inch Diameter
  • Black

4-3/4" L x 4" W x 1-3/4" D; heavy-duty metal bracket; mounts 2-1/2" sealed lights


  • Black, heavy-duty metal bracket
    • For mounting 2-1/2" round, sealed lights
  • 4-3/4" Long x 4" wide x 1-3/4" deep
  • Circle diameter: 2-3/4"
  • Grommet required for complete installation (A56GB or A57GB - sold separately)

Heavy-duty metal bracket allows 2-1/2" sealed lights to be mounted without cutting a hole in the trailer frame.

Requires A56GB or A57GB for complete installation.


BK55BB Optronics Heavy Duty Metal Mounting Bracket for A-56GB or A-57GB - Black

Alternate part number: BK-55BB

California residents: click here

Video of Heavy-Duty Metal Mounting Bracket for 2-1/2" Round Clearance Lights

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for Review of Optronics Trailer Lights - BK55BB

Today, we're going to take a look at the heavy duty metal mounting bracket for the two and a half inch round clearance lights. Now this is a black heavy duty metal bracket, and this bracket will allow two and a half inch round CL lights to be mounted without cutting a hole in your trailer frame. Now, to install the light, a rubber grommet is required for complete installation. We do sell those separately on our website. They're listed on this product page as a related product. There's two offered, the A56GB, which is a closed back design grommet, and the A57GB, which is the open back design grommet.Give you a few dimensions on this.

The width of this bracket, right at four inches wide. The overall height of it, bottom to the very top, is four and three-quarter inches tall. The depth on it is right at one and three-quarter inches deep. The circle diameter that the light fits into, it's going to be right at two and three-quarter inches. Then the mounting holes on the top center to center measured three inches apart.

But that should do it for the review on the heavy duty metal mounting bracket for two and a half inch round clearance lights..

Customer Satisfaction Score:

Customer Reviews

Heavy-Duty Metal Mounting Bracket for 2-1/2" Round Clearance Lights - BK55BB

Average Customer Rating:  4.9 out of 5 stars   (18 Customer Reviews)

4-3/4" L x 4" W x 1-3/4" D; heavy-duty metal bracket; mounts 2-1/2" sealed lights


very happy


Awesome! Perfect! Super Fast Shipping! This mounting bracket is better than I expected. It's high quality, heavy duty steel construction with beautiful black paint is impressive. The thickness of the steel bracket is 0.08 in. (2.1mm) which makes it super strong. I needed a bracket with a 2-3/4 inch hole and this hit the mark. For my application, it is perfect. I will purchase from etrailer again. Thanks again for the super fast shipping!!


I am working on mule to make it street legal. I ordered amber LED side markers, brackets, grommets and connectors. All items are reasonably price, looks good and shipped fast.


Was of good quality and came in a timely manner. Will purchase from etrailer again.


These are very good products. you have to read descriptions very well and get the right grommets though, i didn't realize you could buy grommets for 3" or 2 25/32" holes. I ordered wrong grommets


speedy shipping Only reason for 4 stars is i haven't used yet.


This item is even better quality than I expected. I was very pleased with the emails telling me the status of my order. Overall, I would rate this product and company as excellent. Look forward to doing business with them again!


I Recommend them, Fast shipping and great brackets @ a good price AA ++


excellent quality, timely shipping, works well


Fits the lights well. I welded two together for the front corners and they welded as one would expect. They are quite hard to drill, but overall it’s does it’s job.


Fast shipping, great customer service


Sleek enough to mount anywhere



Good product. tereffic price. Arrived own time.






See what our Experts say about this Optronics Accessories and Parts

  • Difficulty Installing Optronics Market Light MCL157AB and Grommet A55GB in Bracket BK55BB
    You are not alone! The lights # MCL157AB have to fit tight in the grommet # A55GB and the grommet in the bracket # BK55BB so there is very little tolerances. One thing that I have had success with is to put the light in the grommet and then push both into the bracket together. Another tip that usually does the trick is to use some soapy water on the outside of the grommet to help it slip into the bracket.
    view full answer...
  • 3-Hole Mounting Bracket for 2 Inch Round LED Trailer Marker Lights
    We have 2 inch clearance/marker light # MCL52AB which has a 3 hole bracket. The powder coat would have to be sanded away to weld it to the trailer. We do have bracket # BK5557GB that will hold the 2 inch round lights but it can't be welded on. It comes with hardware to surface mount it.
    view full answer...
  • Mounting Bracket and Grommet for Optronics MCL59RB Trailer Clearance/Market Light
    The Optronics # MCL59RB LED clearance/marker light you referred to is indeed compatible with the # BK55BB bracket. The lamp has diameter measurement of 2-1/2 inches and the bracket has an inner diameter of 2-3/4 inches. You'll need a grommet, part # A55GB which take up the difference in diameter between the lamp and the opening of the bracket for a snug fit. You'll also need the wiring pigtail, part # A46PB.
    view full answer...
  • Availability of Mounting Bracket for 2-1/2 Diameter Round Sealed Trailer Lights
    We do indeed have a bracket designed for 2-1/2 inch diameter trailer lights, part # BK55BB. You would also need the rubber grommet, part # A57GB. The bracket and grommet would work with a 2-1/2 inch diameter lamps like part # MC57RB or # MC57AB.
    view full answer...
  • Recommended Grommets Brackets And Plugs For 2 Inch LED Utility Light
    For the Optronics Clear LED Round Utility Light, part # UCL55CB, the grommet and brackets are different than those you listed. I will list the correct items you need for this light. The grommet needed for this light is part # A54GB. The mounting bracket designed for this light is part # BK5557GB. The two-pin plug you need for this light is part # A46PB. Part # A57GB and part # BK55BB are designed for a 2-1/2 inch light and will not work with the 2 inch light you referenced.
    view full answer...
  • Red Beehive Marker And Clearance Light In 2-1/2 Inch Round
    The Beehive Side Marker and Clearance Light w/ Mounting Bracket, 1 Wire - Amber # MC21AS is the only light that comes with the bracket. If you want a red light in the same size, we have the Sealed LED, Beehive Trailer Clearance, Side Marker Light, 2-1/2" Diameter - Red # MCL23RB that can be flush mounted using # A55GB or recess mounted using # A57GB. If you want a recessed mount, you can use the Heavy-Duty Metal Mounting Bracket for 2-1/2" Round Clearance Lights # BK55BB for these lights...
    view full answer...
  • Can the Optronics 2-1/2 Inch Flush Mount Trailer Light # MC57RB be Surface Mounted
    The Optronics 2-1/2 Inch Flush Mount Trailer Light, # MC57RB, requires a grommet and 2 wire plug, # A46PB, and is not designed to be surface mounted. The 2 wire plug would interfere from surface mounting the light. Instead, you could use the Heavy-Duty Metal Mounting Bracket, # BK55BB, and grommet, # A57GB. This mounting bracket will allow you to mount the light without having to drill a 3 inch hole in your trailer and the light will sit in the grommet securing it to the bracket. Another...
    view full answer...
  • Is the Heavy Duty Light Bracket # BK55BB Compatible with Optroncs Glolights
    Yes, the Heavy-Duty Metal Mounting Bracket # BK55BB that you referenced would work with the Optronics Glolight Amber # MCL157AB or the Optronics Glolight Red # MCL157RB but you will need a grommet as well. For that you would want a Round Grommet # A57GB. For wiring up the lights you will want a Two Wire Pigtail for Sealed Trailer Clearance, Side Marker Lights # A46PB.
    view full answer...

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Info for this part was:

Employee Tyler C
Written by:
Tyler C
Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee Jeff D
Installed by:
Jeff D
Employee Wilson B
Updated by:
Wilson B
Employee Brian T
Updated by:
Brian T

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