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Universal Back Strap

Installation accessory for in-dash receivers, tweeters, and more

Item # 120BKSTRAP

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5 questions - 13 answers

Item # 120BKSTRAP

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About the Universal Back Strap

Ken Nail

So many uses....

This metal back strap features multiple mounting holes that make it perfect for adding extra support to the rear of an aftermarket receiver in certain vehicles. You can also bend this pliable 9.059" bracket to install tweeters in your vehicle's factory locations, or to help with any other uses your imagination can come up with. Warranty: 30 days.

What's in the box:

  • Metal universal back strap for aftermarket receiver installation

Customer reviews for Universal Back Strap

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4.5 out of 5 stars
163 reviews

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More details on the Universal Back Strap

Mark G.

Product Research


Overview: This is a universal metal back strap that will support the back portion of an aftermarket receiver that is being installed in most vehicles, RV's, trucks, or boats. It has multiple mounting/support holes that attach to the rear support of the receiver. You can then bend the bracket as needed to attach it to any support screw found inside the cavity where the receiver is being installed.

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Customer Q&A

5 questions already asked

Is this a pair of back straps or just one?
rsbob  Jan 29, 2020
2 answers
It is a single backstrap.
thomas  Feb 13, 2020 (Staff)
michael  Feb 13, 2020
Is this the same as the strapping material used in attics to support duct systems? I have a roll of that material. It is pretty thin.
kenneth m  Apr 07, 2018
2 answers
No, it is a thicker material than duct strapping.
paul  Apr 16, 2018
It's narrower than hanger strap and heavier gauge material. I believe the purpose is to support the back of the audio unit so it doesn't sag or bounce around. I bought one just in case I needed it but turned out that I didn't.
matthew  Apr 16, 2018
What tool did you use to cut this?
chase  Jun 03, 2017
3 answers
I used a pair of tin snips. You can also use wire cutters.
doug  Apr 12, 2019
Actually, I bent it back and forth until it snapped in-two
christopher  Jun 06, 2017
shane  Jun 04, 2017
How long are these?
dustin r  Nov 05, 2015
3 answers
Maybe 9 to 10 inches.
paul  Apr 16, 2018
6 -7 inch almost always cut them in installs
michael  Jan 02, 2016
Pretty long. I used all mine, but I'm guessing they're around 7in. I had to cut all of mine when using them for installing tweeters.
jamie  Nov 06, 2015
If the tweeter has empty space around it while using a backstrap, does that empty space need to be filled? also, should there be some sort of vibration dampening material between the tweeter and the backstrap and the backstrap to mounting screws?
john  Jul 01, 2015
3 answers
Agree with above. Only lower frequency speakers (bass) really need the acoustic backing to push the sound forward because a good deal of the bass experience is the air movement. Tweeter frames don't rattle from the sound vibration (as there is extremely little) but will if they're not mounted snug.
christopher  Jun 06, 2017
depends if the speaker is a free air speaker or if it has requirements for enclosure space. most tweeters don't require a specific enclosure volume. also, the high frequencies produced by tweeters shouldn't shake much, if you hear or see rattling in you specific case simply put a rubber washer in between
michael  Jan 02, 2016
John M. The empty space doesn't need filling; however if you are driving on roads that are rougher than normal(off road) or driving a tractor trailer I would suggest using some rubber bushings between the washers and the strap, and the washers and the mounts for the tweeter. Hope this helps
robert  Jul 02, 2015

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