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Harness Mount Bar (15-18 Fastback)

Market Price $688.85 You Save 13% ($89.85)
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  • Item 393245
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Features, Video & Details

  • Designed to Install Racing Harnesses
  • Provides Additional Chassis Stiffness
  • 304 Stainless Steel Construction
  • Black Powdercoat Wrinkle Finish
  • Fits 2015-2018 Mustang Coupes

Review & Installation Video

Review & Install Video

Hey, what's going on, guys? Adam here with Today I'm bringing you a detailed overview of this Harness Mount Bar fitting all 2015 and newer Mustangs. So this Harness Mount Bar is going to be for all 2015 and newer Mustang owners out there looking to get a support bar to properly attach a harness to without going full throttle on a full road cage. Now, this harness mount bar I have here is going to be very beneficial for the guys out there who have a harness or may want to purchase one in the near future and need a support bar to properly attach it to. Now picking this up, you'll attach these to the seat belt mounts on the back seats and for the driver's seat, making it a very comfortable positioning for any four-point, five-point or six-point style harness. Now I do want to point two things out before we go any further with the Harness Mount Bar. Thing number one is that you're actually gonna lose complete functionality of your rear seats. So if you are looking to get some passengers back there, this is not the option for you. You might want to check out some of the other ones out there on the market. Now, the second thing I want to point out is that the attachment pieces that are going onto your driver side and passenger side floor-mounted seat belts, you are gonna have to trim the cover on those to make these work. The trimming is very minimal but if you're not looking to do that, this option also will not be for you. Now if you are interested in this particular option and it doesn't scare you away to lose your rear seats, then this particular material is a 304 stainless steel tubing all around, so you know you are getting a roll cage type of support. But I do want to point out it's not a full roll cage. Don't expect the same amount of protection, but you will get a small amount of reinforcement when installing this bar. Now with that said, this bar is made of a hammertone finish material, so you can expect a very aggressive look for your car and it will add 16 pounds of weight to your vehicle. But you can actually just counteract that with a rear seat delete, considering you are losing all functionality of it anyway. Now one of the benefits of adding a harness mount bar as opposed to a harness guide or some of the other options out there, is that it can actually be a lot safer and protect your driver and passenger a little bit more. This will utilize a proper attachment for your harness for an over-the-shoulder attachment to protect your spine and shoulders from any accident that may occur, and will actually protect you from excess shifting or fatigue during high G-loads, during cornering or breaking. Overall, this will properly attach, like I said, a four-point, five-point or six-point harness for your driver and passenger for a safe drive. So this particular option will cost you about $600 for the harness mount bar. It is a bit pricey but you do want to take into consideration you've got very good quality materials offering a lot of protection. You're getting a lot of bang for your buck with this one. You are getting a very aggressive muscle car appearance with the actually harness mount bar in the hammertone finish. Now the installation for this part, as I mentioned before, isn't gonna be too bad. It will require some cutting, which I'll touch on in a little bit when I walk you through the install, but you will require to have a couple of tools on hand, including a ratchet and a socket set, even some Torx bits. Because of the cutting, you want to have a Dremel or some kind of cutting tool, whatever you're most comfortable using. Now, first things first to kick this off, you wanna make sure you're pushing the driver and passenger front seats angle forward and all the way up to the dashboard to give you maximum amount of room. The second thing you want to do is remove the bottom seat cushions on your rear seats to gain access to the seat belt mounting positions underneath those cushions. So once you get those seat cushions out you'll notice the bolt holding on your seat belt mounting positions. You want to unbolt that, place the bracket underneath and then your seat belt on top of that. And place the bolt through the pre-drilled holes, tightening that down and repeat this process for the opposite side of the vehicle. Once you do that, you wanna make sure your brackets are pointing up towards your quarter-windows, and if they are, you can put the seat cushions back together. And once you get those brackets in place pointing up towards your quarter-windows and you get your seat cushions back in place, you'll be installing the main portion of your harness mount bar to those brackets using the bolts included in the kit. Tighten them down by hand at first and then use your ratchet to finish off the job, and repeat the process for the opposite side. So from here you'll be trimming the covers on the factory front seat belt brackets mounting positions on the floor. And once you get your trimming down, you'll be installing the down tubes provided in the kit. So you'll remove the factory bolt on the seat belt pre-tensioner on the floor and replacing it with the bolts provided in the kit to tighten down the down tubes on the actual floor boards. Now once you get the down tubes in place on the bottom, you'll be attaching them to the harness mount bar on the top and tightening them down also using the bolts provided in the kit. Once that's done, you're all finished with installation and you're good to go. Now, overall, you're looking at spending about an hour or so on the installation, making it something anybody can do. But since there is some drilling involved, if you're not comfortable with drilling, it can be a little bit more difficult for you. I will be giving this a two out of three wrenches on the difficulty meter, just considering the drilling. All other parts of the install are very simple, but you want to make sure you're comfortable with those cutting tools. If not, there's no shame in handing this one over to a professional. Well, that just about wraps this one up, guys. If you're the owner of a 2015 or newer Mustang and you're looking for a way to properly handle and support your harness setup, you might want to check out this Harness Mount Bar which is of course available right here at

Easier Than a Roll Cage. If you're looking for an easier alternative to a roll cage for your Mustang, consider updating your car with a Harness Mount Bar. This Harness Mount Bar has been created to mount a 4, 5 or 6 point harness in your S550. Give yourself support during intense cornering and braking with this harness mount for spirited driving.

Extreme Durability. Created from 304 stainless steel, this harness bar has extreme durability. Completed in a black, powdercoated wrinkle finish, this harness bar is not only durable but sleek and good looking as to not throw off the interior or your awesome ride. This bar boasts even more durability due to being tested and certified to handle all types of forces that are required by the National Highway Traffic Administration, DOT and SAE.

Straightforward Installation. This Harness Mount Bar is easy to install and remove due to using existing holes and seatbelt mounting points. Please note that this product does require a small cut to be made on the interior plastic panel.

Application. This Harness Mount Bar is designed for 2015-2018 model Mustangs.

Fitment: 2015 2016 2017 Details

What's in the Box
  • (1) Harness Bar
  • (2) Stablizing Bars
  • (2) Brackets
Installation Info
Tech Specs
Will it fit my Mustang?
  • EcoBoost - 15, 16, 17
  • GT - 15, 16, 17
  • GT350 - 15, 16, 17
  • V6 - 15, 16, 17

Most Helpful Reviews

harness bar with rear delete kit

the directions were a little difficult to understand but overall i was able to figure it out. i love the quality of the parts and it looks really clean with the seats now.

Helpful (1)

A lot less body roll

My car has less body roll and it does not roll to the sides like it use to.

Helpful (1)

Overall Rating 5 out of 5 stars
Read All 3 Reviews

Customer Photos (4) Submit Your Photo

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9 Questions / 6 Answers

Ask a Question

Will this fit with a rear seat delete?


  • The Harness Mount Bar will work with a rear seat delete yes.


Helpful (0)

Whats the best harness for this bar?


  • This Harness Mount Bar will work with virtually any harness both bolt-in and wrap-on. The best harness for you and your harness bar will vary on the style you are comfortable with, brand, and the regulations for your racing group/association.


Helpful (0)

It appears the stock factory seat belts remain operational with this product as well. This is something I am looking for to utilize with street use also. Is this the case?


  • Hello! With the Harness Mount bar, you will be able to retain the functionality of the factory seat belts.


Helpful (0)

Do you have this product fit 12 model Boss ?


  • Hello! We do not carry this specific item for a 2012, however we do carry several other Harness Mount Bars if you do a search for "Harness Bar" on our website, it will come with several different options.

    Doug P

Helpful (0)

I have a GT350 with stock seats. I am having trouble understanding what harnesses work with this bar. Can you reccomend a 4 point harness that will work with this bar?


Will this fit with the SpeedForm Rear Seat Delete - Fastback - Black?


  • The Harness Mount Bar would not fit the SpeedForm Rear Seat Delete without modification to the seat delete.

    Rob D

Show 1 more answer Helpful (0)

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Customer Reviews (3) Write a Review

Overall Rating 5.0

out of 5 stars

  • 5/5

    February 18, 2017

    harness bar with rear delete kit

    the directions were a little difficult to understand but overall i was able to figure it out. i love the quality of the parts and it looks really clean with the seats now.


    Year: 2016 Submodel: GT

    Helpful (1)

  • 5/5

    July 27, 2016

    A lot less body roll

    My car has less body roll and it does not roll to the sides like it use to.


    Year: 2016 Submodel: GT

    Helpful (1)

  • 5/5

    August 19, 2017

    Harness Bar

    Really easy install, and we'll worth your buck. The black finish is aggressive, since it's a hammertone finish. You won't regret buying this product.


    Year: 2016 Submodel: GT

    Helpful (0)

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