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Universal Back Strap

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

Item #: 120BKSTRAP

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29 Reviews | 2 questions - 4 answers

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

Universal Back Strap Reviews

Average Customer Review:

29 Reviews

Very useful

Written by: Josh from knoxville, TN on February 2, 2016

Crutchfield Customer Review (What's this?)

Very useful to mount tweeters in your vehicle.



Great for making custom brackets.

Written by: John from Vancouver, CA on January 22, 2016

Crutchfield Customer Review (What's this?)

I bought these to help install tweeters in my VW Touareg doors. They were easy to manipulate into the shape I needed to support the tweeters in the factory location.



Very strong strap

Written by: Anonymous from urbana, OH on January 22, 2016

Crutchfield Customer Review (What's this?)

This strap is very strong and very sturdy. It worked great.



back strap.

Written by: Christine from pasadena, MD on January 22, 2016

Crutchfield Customer Review (What's this?)

what you see is what you get. if you need this, well get it. does bend with force, and can be cut with force.

Pros: malleable, versatile

Cons: only 1 screw hole size

You need these!! Trust me.

Written by: Jeff from Georgia on January 4, 2016

Crutchfield Customer Review (What's this?)

If your putting tweeters in your ride you will want to have a pair of these. They will allow you to custom mount your tweeter any way you want. Easy to bend, cut and bolt.

Pros: Very customizeable.

Cons: None

great item

Written by: steveg1228 from Chesterland, Oh. on November 21, 2015

Crutchfield Customer Review (What's this?)

Perfect item for that semi-custom speaker install. I used these to install JBL tweeters in the door of my 2013 Tacoma. I used a vice and hammer to make a custom bend to hold the speaker at the perfect angel.

Pros: inexpensive, great idea to hold speakers

Cons: none

Didn't need

Written by: Suburban Sasquatch from Hawaii on October 6, 2015

Crutchfield Customer Review (What's this?)

Purchased these cause they said I'd need them to install the tweeters to my component speakers in the dash as well as some you tube videos however I didn't need them so I will keep them for future projects.

Pros: Universally adaptable.

Cons: Didn't fit my application

Great installation aid

Written by: Arkrep from Arkansas on September 28, 2015

Crutchfield Customer Review (What's this?)

This part made installation of two new tweeters in the factory position a breeze! The metal is soft enough to be bent easily, and the mounting holes are well designed.

Pros: easy to use

Cons: none

Cheaper options

Written by: BDR from Texas on September 23, 2015

Crutchfield Customer Review (What's this?)

Not pleased, is simple plumbers tape, was expecting it to be much thicker and less pliable, not worth the $0.99. Buy a roll locally for the same price.

Pros: is good if you don't know what plumbers tape is.

Cons: Is plumbers tape


Written by: Steve from California on August 31, 2015

Crutchfield Customer Review (What's this?)

No Brainer



Works as expected!

Written by: telekaster from California on July 23, 2015

Crutchfield Customer Review (What's this?)

I used this to mount Focal 1.5" tweeters in place of the factory tweeters in a Subaru Outback. These straps were easy to bend into shape. If you buy these, you probably already know exactly how you're going to use them. They work - period.

Pros: Cheap. easy to Use. Versatile.

Cons: None.

Exactly what I needed

Written by: Tracker13 from Pennsylvania on June 7, 2015

Crutchfield Customer Review (What's this?)

This product was exactly what I needed. Worked like a charm!!!!!



Universal Back Strap

Written by: Rich from Virginia on May 17, 2015

Crutchfield Customer Review (What's this?)

Used to attach the Crossover to the inside of the door. No other place to put it in my 2006 Colorado. Perfect size and no holes to drill. Just screwed the bar across the opening in the inside of the door then screwed the crossover to it in the hole in the door. No other flat surfaces to hang the crossover on.

Pros: Worked like a charm.

Cons: Had no Idea what it was for when I started.

Great mod piece

Written by: Tim from Nebraska on April 21, 2015

Crutchfield Customer Review (What's this?)

Allows you to be creative! Molded to replace 2.5 inch factory "tweeters" with 1"

Pros: Simple

Cons: None it's exactly what it looks like a hunk of metal

helpful metal

Written by: perks from Menifee, California on March 10, 2015

Crutchfield Customer Review (What's this?)

These things are awesome. Easily bent to whatever shape you need them. Before you get started however, make sure you have a snipping tool. Scissors won't cut it, you'll need something a little bigger.

Pros: Price, malleable, size

Cons: None

It's a metal strap

Written by: chiro from Illinois on November 2, 2014

Crutchfield Customer Review (What's this?)

It's a metal strap with holes in it. Useful in attaching stuff, Easy to bend and cut



Good Stuff

Written by: excellenceautosolutions from Marble Falls Texas on November 2, 2014

Crutchfield Customer Review (What's this?)

These things work great. I am glad the customer support tech recommended them to me. I only had to use a small piece of one so I have one and a half left over for the next job!

Pros: Multiple applications. Great customer service. Great tech support

Cons: I wish I would have known about this item many installations ago.

does the job

Written by: pc75 from nyc on September 29, 2014

Crutchfield Customer Review (What's this?)

does what its meant to do. cheap

Pros: cheap

Cons: none

It's a piece of metal

Written by: Ben B from Michigan on September 14, 2014

Crutchfield Customer Review (What's this?)

What can I say about a piece of metal? I bent it into a makeshift bracket, used a dremel to trim off the excess and used it to mount tweeters into a stock dash location. Can't go wrong with it




Written by: Fyrewyre from Talbott, TN on September 10, 2014

Crutchfield Customer Review (What's this?)

The back strap was intended for custom mounting a tweeter. And that is exactly what it did.

Pros: Bend-y, versatile, hole-y

Cons: Fragile.

Just another example of Crutchfield anticipating your every install ne

Written by: NorCalBryan from Lakeport Ca on August 11, 2014

Crutchfield Customer Review (What's this?)

The technical support staff is great! After just a few moments on the phone with one of their highly qualified, helpful staff, and you will have an excellent understanding of what your up against! I had no idea how to install component speakers systems or head units until is like with a Crutchfield rep for five minutes!

They recommended all the right extras and provide so much support!! Thanks Crutchfield!

Pros: Perfect for the job, only a dollar.

Cons: None

Universal Back Strap

Written by: Anonymous from Texas on June 27, 2014

Crutchfield Customer Review (What's this?)

Solid quality.



cheap and easy

Written by: 1fatdude from Tampa, FL on April 17, 2014

Crutchfield Customer Review (What's this?)

What can I say? Bendable bracket is awesome. Put stuff anywhere.



Extremely Useful

Written by: Anonymous from Goose Creek, SC on November 10, 2013

Crutchfield Customer Review (What's this?)

I used them to mount component tweeters in my 2004 mustang cobra. The stock tweeter was 3.5" so I used the strap to mount the smaller 1.5" tweeter.

Pros: Handy for a lot of situations

Cons: None

Good quick fix exhaust hangers

Written by: Anon from Michigan on September 12, 2013

Crutchfield Customer Review (What's this?)

Thought I needed one to get my head unit secured because it was gonna need to get a custom install. Turn out I was wrong but I still made use of it by using it to fix my low hanging muffler lol.

Pros: Can also be used with an Erector set

Cons: You can't really say much negative over a simple piece of metal...

focal Is165 5.25

Written by: Anonymous from 45840 on September 9, 2013

Crutchfield Customer Review (What's this?)

Installed this 5.25 components in my 05 honda accord.I replaced a pair of polk db 6.5 slim that i was not impressed with. The focals sound great.



Great universal mounting bracket

Written by: WAC from Honolulu, HI on May 30, 2013

Crutchfield Customer Review (What's this?)

Good bracket to hold things in odd mounting locations, its a little thick to cut so I used a Dremel tool to cut

Pros: Very adaptable

Cons: Tough to cut

Can be used for anything

Written by: Anonymous from Prospect, CT on March 11, 2013

Crutchfield Customer Review (What's this?)

Soft metal, can easily be bent / formed to fit any application. I used them for strapping in my headunit as it was a custom fit.

Pros: Bends easily with pliers and.or vice but strong enough to hold speakers, headunits, or whatever you want.

Cons: None.

Great For Theft Protection

Written by: GeorgeR from Natchez, MS on October 31, 2011

Crutchfield Customer Review (What's this?)

It holds my CD Player from bouncing around.

Pros: It's good for theft protection.

Cons: It would have been better if it were longer and had smaller holes, or at least blanks.

Hands-on research

What's in the box?

Download owner's manual

  • Metal universal back strap for aftermarket receiver installation

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.

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Customer Q&A

Crutchfield asked  
Why did you buy this?

It was a recommendation from a sales advisor in order to assist with installing the tweeters. Plus at this price, why not? [ Samuel  Feb 07, 2016 ]
Need to anchor the back of the stereo in a 72 squareback and wanted the additional support. [ Carl  Feb 04, 2016 ]
to secure the tweeters [ Benjamin  Feb 03, 2016 ]
I wanted to mount this tweeter in the stock location. I'm glad I was given this option so I could mount my tweeter. It would of been frustrating as a novice trying to look for a direct for piece that didn't fit. [ Carlos  Feb 02, 2016 ]
Easy to use and bend for install of new tweeters. [ Steve  Feb 02, 2016 ]
They are useful and the price was right. [ Nicholas  Jan 29, 2016 ]
NEED FOR TWEETER INSTAT [ Peter  Jan 26, 2016 ]
Tweeter install [ kristen  Jan 24, 2016 ]
Cheap and essential do you need it probably not. Will it make things easy yes it will. [ Cesar  Jan 24, 2016 ]
This helped to mount my jbl tweeters in the factory locations on my F150 [ Rodney  Jan 23, 2016 ]
Suggested for installation of separate tweeters [ Colin  Jan 21, 2016 ]
It was recommended for mounting tweeters in stock location [ Andrew  Jan 20, 2016 ]
To mount component tweeters into empty tweeter mounts in my dash. [ Justin  Jan 20, 2016 ]
Replacing a pillar tweeters, may need it [ Paul  Jan 18, 2016 ]
The Grand Cherokee has a really odd sized "tweeter" (it's actually a midrange speaker), so I've read in numerous forums that you can bump up the "tweeter" to a 3.5" midrange... so I figured I'd need something to mod the factory mount. [ Kristian S.  Jan 17, 2016 ]
Recommended by the online expert. Needed to mount the tweeters in the doors. [ Eddie  Jan 09, 2016 ]
I am doing an install into a custom console. I plan to use this to support the back of the receiver. [ Daniel  Dec 29, 2015 ]
I have a Scion xB and needed this back strap to mount the new tweeters in my dash. [ U  Dec 24, 2015 ]
It was recommended by crutchfield for easy installation [ Gavin  Dec 17, 2015 ]
Tweeter mounting [ Robert  Dec 12, 2015 ]
Was Recommended for tweeters [ Ben  Dec 11, 2015 ]
needed it for the tweeters [ Sherry  Dec 11, 2015 ]
Universal Back Strap for mounting tweeters flush in the vehicles A-Pillar [ Frank  Dec 09, 2015 ]
I choose the back strap to install my tweeters in the dash of my Jeep [ William  Dec 09, 2015 ]
Help in tweeter installation [ DWIGHT H  Dec 08, 2015 ]
tweeter install [ Scott  Dec 07, 2015 ]
Super cheap, I think these will mount my tweeters exactly where I want them easily. [ ELI A  Dec 04, 2015 ]

2 questions already asked

6 -7 inch almost always cut them in installs [ michael jonas  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. [ Jestep  Nov 06, 2015 ]
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 jonas  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 W  Jul 02, 2015 ]

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