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Manfrotto Heavy Duty Boom Arm, Black - 9' (2.7m)

BH #MA085BSL • MFR #085BSL
Manfrotto Heavy Duty Boom Arm, Black - 9' (2.7m)
Key Features
  • Three Sections
  • Pivot Clamp, Counterweight
  • Cable Clips
This black, heavy duty Manfrotto Heavy Duty Boom without stand consists of three sections of 39.5". The sections may be linked together with the included hex-nut key.
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$40/mo. suggested payments for 6 Mos.
with the credit card.§ 

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Manfrotto 085BSL Overview

This black, heavy duty Manfrotto Heavy Duty Boom without stand consists of three sections of 39.5". The sections may be linked together with the included hex-nut key.

Sections of the boom may be used together, or separately.
UPC: 719821242000

Manfrotto 085BSL Specs

Item TypeBoom Arm (for Stand)
Load Capacity13.2 lb / 6 kg
Number of Sections3
LengthUp to 9.2' / 2.8 m
Mount (to Light/Accessory)5/8" Receiver
Mount (to Stand)Clamp with 5/8" Receiver / 1-1/8" Stud
Included Adapter1 x 5/8" Stud with Reversible 1/4"-20 & 3/8"-16 Male
Weight19.6 lb / 8.9 kg (Arm)
15 lb / 6.8 kg (Counterweight)
Packaging Info
Package Weight31.6 lb
Box Dimensions (LxWxH)58 x 7 x 7"

Manfrotto 085BSL Reviews

Good price and Sturdy Product

By Phil
Rated 5 out of 5
Date: 2019-06-13

This is a huge boom and works really well. It breaks down to travel although the weight is fairly large, it requires a big bag. The allen wrench connections take about 1 minute to unscrew and take apart. Cable clips are handy but a bag would be nice to have included to keep it all in.

Excellent Boom that can handle a load

By Anonymous
Rated 5 out of 5
Date: 2015-03-08

I use this boom to get an X800 monolight with beauty dish centered above the subject's face while leaving the area in front of the subject free for my camera. What is great about this boom is that it is heavy duty and comes with a heavy enough counter weight to counterbalance a monolight studio strobe with a 22 inch beauty dish. This is, essentially, the manual equivalent of the Manfrotto Super Boom. It offers the same level of boom length and strength but does not have the crank controlled articulating head. The assembly that attaches the boom to a light stand and provides control of the boom angle and articulation of the strobe head is an excellent design. Having individual control over the angle of the boom and articulation of the strobe head is a big plus.

Great boom! a little too pricey however

By Bitpimps
Rated 4 out of 5
Date: 2015-03-05

I received it today, assembles quickly. Very lightweight, curiously designed in a way. They could have added a few mm more of metal to the tubing to add additional structural integrity without adding very much to the weight. The included counterweight weight seems too heavy for the strength of the metal. I will gladly hang on to that weight as it will come in handy later for other stands. The first piece with the mounting point for the light by itself easily supports 13-15 pounds. Adding the second section essentially cuts the safest weight you could expect it to hold by about half. I would not use this at full extension with mono-lights, at that level of extension only flags or reflectors would be safe. The exception might be some type of power pack head because they weigh nothing. You could reinforce the existing pieces to support more with very simple DIY modification, it only requires minimal knowledge of tools and time. BH packaged this thing so well I almost didn't get it unpacked, I half wondered if they had packed a few additional things I wasn't aware of. I think the workmanship is very good, the bracket attaching it to your century stand is very practical and well made. One section of this is more than adequate for most all jobs. Its light enough and just compact enough to travel cross country or overseas with. I only give it four stars due to odd design choices with the materials used and the price, also the fact that Manfroto curiously does not include a threaded screw to secure it to my c-stand or light stand, I had to rob a compatible one off something I wasn't using. I am already constructing an idea for an improved modification of the design in my head. Be very cautious about clamping it too firmly, it could permanently bend the tube, if you treat it carefully it should last you many years. Strongly recommend reinforcing this tube with something to ensure the very pricey item enjoys a very long life and gives you the ability to boom slightly heavier items than the specs say. Better safe than sorry! I'm testing with my Einstein+Mola Demi and a profoto B1 with some various modifiers soon, these are the ideal weight and size of items to use with something like this.

Heavy Duty is Under Statement

By Philip
Rated 5 out of 5
Date: 2013-07-29

Commercial advertising shots on location.

Missing locking knob

By David
Rated 2 out of 5
Date: 2018-11-19

When a company like Manfrotto sells an item designed to be used on top of a C-stand or baby stand, any reasonable person, and certainly any experienced professional would expect the item to come with a locking knob, or t-handle to secure the item onto the stand. But as others have noted, the Manfrotto Heavy Duty Boom Arm, lacks such a knob. A locking knob is not a convenience for a stand mounted item, it is a necessity. The boom cannot be used safely without a locking knob. I suspect that someone in the shipping or packaging department at Manfrotto is simply ignorant, and neglecting to assemble the arm properly prior to shipping. But when a professional orders a professional piece of equipment, we expect it to have all the parts right out of the box. The fact that at least three other reviewers have mentioned the same problem is the reason I am giving it only 2 stars. If you look at a picture of the Manfrotto 123 pivoting boom Clamp for Super & Heavy Duty Boom (B&H# MA123) which is part of this boom assembly, you can actually see the aforementioned locking knob. Manfrotto makes some decent mid-level gear, but they really need to get their act together on this one.


By Frank
Rated 5 out of 5
Date: 2017-05-13

We use many Manfrotto grip pod eq; always solid even when a screw is loose

Light but strong

By Robert
Rated 5 out of 5
Date: 2017-01-17

It's a trade off whether to over design the boom and suffer the consequences of carrying what feels like a steel girder or making a compromise in weight and hope for the best. I hung a DigiBee with large light box over some long table products and found I had made the right choice. I wish I had steel girders on a higher ceiling, but with a properly placed counter weight this managed admirably. Light weight but not weak. I suggest spraying some dry lube on the parts that slip together, because they are snug and can become a two person job to separate otherwise. Very happy with this purchase. Of course I don't think anyone has ever gone wrong buying Manfrotto.

A Boom

By Mark
Rated 3 out of 5
Date: 2015-10-07

Erg, really Manfrotto? I rated this four stars because a boom this expensive did not come with the M6 knurled screw to secure it to a stand. I went to a really top notch local hardware store and was able to get the right parts for a couple of dollars. I knocked another star off due to a complete lack of any instructions. The only documentation included was a general guide for tripods; not helpful. Yes, I was able to stare at the various parts and figure out how they go together. However, I did not have a lot of confidence the first time I mounted a light given that I could not be certain that I did not miss some step. It leaves you wondering what Manfrotto's intent was at each step rather than inspiring confidence. Other than those two issues I would consider this a five star product. Using two of the three segments I was able to get a nice stable mount of an Einstein light and their large octobox for some clamshell lighting. The only reason I can see for using the third segment would be to mount a heavier light or modifier and need the ability to move the weight farther from the stand's center to counter balance the weight. I nearly need the third segment to get the balance right. Two segments are enough to get the stand out of my way when shooting, but if you needed more reach I don't think I would be comfortable putting anything heavier than a speedlight out on the end of the boom. I do not see any flexing of the boom in my setup with about 10.5 pounds of equipment on one end balanced by the 15 pound weight.

See any errors on this page? Let us know



This boom arm was suggested by B&H. I need a versatile system that will hold Buff Einstein and medium soft box with no problem?
Asked by: Rodger K.
This is exactly what I use mine for. No worries what so ever!
Answered by: David H.
Date published: 2018-08-27

Will this boom work with the following light ...

Will this boom work with the following light stand? Manfrotto Alu Senior Air-Cushioned Stand with Leveling Leg (Black, 10.3')
Asked by: Khody
Yes this boom is compatible with the Manfrotto Alu Senior Air-Cushioned Stand with Leveling Leg (Black, 10.3').
Answered by: Kirk
Date published: 2018-12-24


Is this B&H#MA1004BAC Mfr#1004BAC an appropriate stand for this boom? My light + modifier weighs about 4-5 lbs. Do I need a steel stand to use this?
Asked by: David
The boom weight alone would exceed the safe rating of the MA1004BAC stand.
Answered by: Reuben
Date published: 2019-11-11


is it possible to buy this boom arm without counter weight? if not plz recommend me another brand same quaand length
Asked by: Alaa
The boom arms that are long like the one you picked all come with a counter weight.The ones that do not are shorter. This one is very good but is 83 maximum in length,Avenger D600 Mini Boom (Chrome-plated), B&H # AVD600 MFR # D600.
Answered by: Robert K.
Date published: 2018-08-27


I got this boom and stand used but I am missing a section. Can I buy one section or just the three sections with no weight or clamp?
Asked by: Scott B.
If your kit is missing pieces then B
Answered by: Robert
Date published: 2019-10-11


What maximum counterweight is recommended for this (420csu) boom stand?
Asked by: Bobkov
Boom: 19.6 lbs (8.9 kg)Included counterweight: 15 lb (6.8 kg)Max. usable counterweight: 44.09 lbs (20 kg)
Answered by: DAVID C.
Date published: 2018-08-27
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