Free Shipping On Orders Over $49. Details

Talk to a Mustang Enthusiast
M-F 8:30A-11P, Sat-Sun 8:30A-9P
Win $15,000!! Enter Now

Alterum Rear Seat Delete - Black (15-20 Fastback)

Item 388917
Call a Mustang Enthusiast at 1-877-887-1105
M-F 8:30A-11P, Sat-Sun 8:30A-9P
Market Price $360.00 You Save 11% ($40.00)
Our Price


FREE Shipping

Will this fit your Vehicle?

Select a different vehicle Help?
Update or Change Vehicle
In Stock

Ship to: Ashburn - 20149
Sorry, please enter a valid US or CA postal code
We're sorry, zip can't be updated at this time.
    Create a list
    Add to New List

    Saved - View your saved items

    We're sorry. We couldn't save this product at this time.

      Review & Installation Video

      Hey, Stephanie with and this is my review of this rear seat delete kit for Fastback 2015 and '16 Mustangs in black. Now this is lightweight, which it's supposed to be, so as far as materials, this kit has a thin piece of ABS plastic here and here, but honestly that's exactly what I expected. You aren't putting in new rear seats here and these aren't made to be sat on. They're as lightweight as they possibly can be, which is good, and they give a really clean look. So as long as you aren't expecting something that a grown adult can sit on and you are expecting something simple, lightweight and clean, then you're on the same page as this product. So the cool thing about this kit is while you probably could gather some materials and make a form of this kit for yourself, buying this kit as a completed product takes all of the hassle out of your hands, especially if you don't have the tools, or know-how, or even the time to create this. The kit does cost just under 300 bucks, but after looking at this thing here and sticking around for the install, which I can touch upon in a minute, I think this is well worth the price. Going back to the install, while this is a simply constructed product, I did expect it to install properly and cleanly and with no issues. Just because the general idea and materials behind the seat delete are simple doesn't mean that they should install like junk, and I can tell you that it did install very nicely. Everything lined up well and it actually fits nicely, in my opinion. This is a one out of three wrenches on the scale, but the install can be a little bit time-consuming. You're looking at about two hours and most of the time is spent pulling out your stock seats, and the anchors, and the seat belts, things like that. The only other thing I can say about the fitment is that if this were mine, I'd probably run some double-sided Velcro in the corners on the bottom here and here. The only thing holding these pieces down are these pins in the middle here, so the sides are a little loose for me. Other than that, I really dig this kit. So overall, we have a rear seat delete that is as lightweight as possible, really has a good fit, and it matches the rest of the interior well, so you're looking at some nice end results. Check this thing out for yourself on the site, and I'm Stephanie and we'll see you next time at

      Product Information

      Features, Description, Reviews, Q&A, Specs & Installation


      • Improves Power-To-Weight Ratio
      • Can Save as Much as 30 Pounds
      • Deletes Rear Seats
      • Sporty 2-Seater Styling
      • Premium Black Carpeting
      • Easy Bolt in Installation with Complete Instructions
      • Fits All 2015-2020 Mustang Fastbacks (Coupes)


      Improves Power-to-Weight Ratio. Go faster by ditching up to 30 pounds with a rear seat delete kit for your 2015-2020 S550 Mustang. One of the easiest ways to reduce ET's at the track is to drop unnecessary weight which will improve your Mustangs power-to-weight ratio. Getting rid of your rear seats is like getting "free" horsepower, just by simply reducing weight.

      Two Seater Appeal. The Mustang Rear Seat Delete kit for your 2015-2020 V6, EcoBoost or GT coupe replaces your stock rear seats with a sleek, premium black carpeted finish. Tired of friends bumming rides? Now you have a real excuse! Cruise in style with the companion of your choice.

      Adds Storage. The Rear Seat Delete Kit creates a storage space under the seat area where you can store aftermarket stereo equipment.

      Bolt-In Install. Kit is easy bolt on with complete instructions, and does not require you to remove factory seat brackets or seat belts. If you have a roll-cage, the delete kit can be easily modified to fit.

      Application. This black carpeted Rear Seat Delete Kit is designed to fit all 2015-2020 Mustang Fastbacks (coupes) including the V6, EcoBoost and GT models, does not fit convertibles.


      Fitment: 2015 2016 2017 2018 2019 2020 Details

      MPN# 388917

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (27)

      Write a Review

      Ratings Summary

      4.1 out of 5 overall rating from 27 customers

      Installation Time: Afternoon

      Installation Cost: $100-$250

      • December 21, 2019

        5 2017 GT - JoshS Installation Time: Less than 1 Hour

        Rear Seat Delete

        Great quality, was super easy to install. However, you may have to adjust the hole locations on some of the lower brackets. Both were off by 1/8 to 1/4 inch. With a little adjustment fit great. You’ll need a really strong and sharp cutting tool to cut. Other than that looks great.

        Helpful (0)
      • August 16, 2019

        3 2019 EcoBoost - MikeFryy Installation Time: Afternoon

        Back seat delete

        Purchased for my 2019 EcoBoost. States that it is made for that year. But the push pin holes for the back portion of the kit doesn't come close fitting any of the holes. Overall looks nice.

        Helpful (3)
      • June 11, 2019

        4 2015 GT - Joe Installation Time: Afternoon

        Excellent product.

        Let's be honest, the back seat of a mustang is pretty much useless to begin with. I've had this rear seat delete installed for almost a year and would only change one thing. I wish the bottom was able to support some weight. It would be nice to be able to use that space for something. But in the name of weight savings, I understand.

        Helpful (3)
      • December 15, 2018

        5 2016 GT - KerionW Installation Time: Less than 1 Hour

        Back seat delete

        For the price, you can’t go wrong with this. I added double sided 3m tape to added stability.

        Helpful (2)
      • November 09, 2018

        5 2017 GT - MichaelW Installation Time: Full Day

        Looks great

        The best way to do this mod is to remove the rear seats and all seatbelt hardware beforehand. Plenty of good videos online to help. Takes a good two hours. Take your time and take pictures with your phone for later. This kit fits great. The comments about loose trim clips etc. must have been corrected. No issues with mine. I decided to use the included metal bolts to install the back upright panel. Overall it looks stock. Great price too.

        Helpful (6)
      • October 28, 2018

        5 2016 GT350 - JosefK

        Good product and light weight

        It's a little pricey for what you get but the look is clean after the install and everything you need is in the kit. Love it in my GT350!

        Helpful (3)
      • August 25, 2018

        4 2016 GT - FrankM Installation Time: Afternoon

        Over Priced

        It looks really nice, however it's expensive for what you get. I know I'll replace the plastic push pins down the road. The 2 that go up top (where the rear part of the seats mount) bent just trying to push through and don't lock all the way for a secure mount. I see people talking about you can't place weight on it, of course you can't, it's not meant to be a seat. Again my only real complaint is cost. Maybe $100 to $150 should be accurate cost for this.

        Helpful (7)
      • August 07, 2018

        4 2018 EcoBoost - EffranD Installation Time: Afternoon

        Good looking, but a few rough spots..

        The product fits as expected... A few rough spots that prevent a 5* Pros: Deletes the back seat; clean looking interior; the extra padding truly works (sound deadening not really needed for an EcoBoost Mustang. Cons: Push-Pins on the bottom do not stay in place. Every time I step into the vehicle I push down on it to "click" into place; Little to no rigidity on the bottom half of this item. I will probably get some rubber foam block to secure it more. I went to wash my back window after I got it tinted and did not put pressure where the seats were. Instead I place my knee in the middle with the most support and still felt it bow. I will have to get a squeegee and long handle?!?! :-( All in all, I wish the material was more like the bottoms I took out that was not that heavy but had plenty of padding. It looks great though. I did put a light rubber mat on the bottom to keep my bags of groceries from sliding!

        Helpful (4)
      • August 02, 2018

        5 2015 EcoBoost - Eric

        Seat Delete Kit

        Looks pretty nice and clean. It would’ve been nice if they provided a new cover for the seat belt opening. Seems to be able to handle heavier objects as long as you keep them near the center. It is a little loose around the edges on the bottom. Overall, keeps road noise out about as good as the rear seats did.

        Helpful (4)
      • July 15, 2018

        3 2016 GT - rags16 Installation Time: Less than 1 Hour

        seat delete

        looks ok, not designed for any kind of weight. I had to add Styrofoam blocks under delete kit (bottom) to support my 40 lb dog!!!!!!

        Helpful (5)

      Questions & Answers (11 answers)

      5 Top Rated Questions

      Would this support the weight of a large dog? I am looking to replace the rear seat so that my Malinois doesn't rip apart my back seat with his claws.

      • These are not meant for adults to sit on, as for dogs, I would be careful with anything over 65lbs as these are as lightweight as possible.

      Helpful (7)

      ?Does the rear seat delete kit retain the fold down ability for storage through the trunk?

      • It doesn't keep the traditional fold down, but the clips can be undone fairly quickly and you can have even more access to your trunk then you would with the stock fold down.

      Helpful (6)

      How thick is the material? I was wandering because I was planning on modifying it so I can install subs in it.

      • The Rear Seat Delete - Black will be very thin, it is designed to give a finished look while weighing as little as possible, for weight reduction purposes.

      Helpful (3)

      why wouldnt this work on a convertible? both coupes and convertibles have basically the same rear seats.

      • Where they are similar, they are indeed different enough to cause fitment issues if trying to install this kit on a convertible.

      Helpful (2)

      Does the rear seat delete kit retain the fold down ability for storage through the trunk?

      • It doesn't keep the traditional fold down, but the clips can be undone fairly quickly and you can have even more access to your trunk then you would with the stock fold down.

      Helpful (2)
      Post Your Question
      6 More Questions
      What are the dimensions on this? Both vertical and horizontal panels. 0 answer
      This looks like it completely removes the seatbelts for the rear is that correct? I have a schroth quick fit pro, so I assume, I would NOT be able to use the belt system with this? Is that correct, or can I still use the belt system? 1 answer
      Is it strong enough or 60 lbs dog 1 answer
      Will this kit work with a 2017 convertible? Also for a fast back would it be possible to put speakers and a sub on this kit? Or would weight be an issue ? 1 answer
      If i was to keep car seat anchoring point would i be able to use a childs car seat 1 answer
      Would it retain the mounting for a childs car seat? 1 answer

      Installation & What's in the Box

      Installation Info

      Tech Specs

      Will It Fit My Mustang

      • Bullitt - 19, 20
      • EcoBoost - 15, 16, 17, 18, 19, 20
      • GT - 15, 16, 17, 18, 19, 20
      • GT350 - 15, 16, 17, 18, 19, 20
      • GT350R - 15, 16, 17, 18, 19, 20
      • GT500 - 20
      • V6 - 15, 16, 17

          Related Mustang Categories