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1-Inch Billet Aluminum Hubcentric Wheel Spacers (15-20 All)

Item 390053
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      Review & Installation Video

      Hey, guys. Adam here with, and today we're taking a quick look at and installing the 1-Inch Billet Aluminum Hub-centric Wheel Spacers available for the 2015 and newer Mustang. Now if you're the owner of an S550 and you're looking to get a slightly wider rear end stance for your Mustang about 1-inch, you can use these wheel spacers to adapt your wheels to push them out a little bit. They're also a great choice for the guys who've picked up a wheel that might have a slightly more positive offset pushing that wheel back into the wheel well a little bit more, these instead of picking a new wheels with different offsets, this way you can adapt it, push it out about 25.4 millimeters or 1-inch to make that look like a flush fitment or a slightly more poked fitment. There are several other options out in the category if you're looking for something a little different, but if you need that 1-inch, this is a good choice. Now this one, in particular, is made from a billet aluminum construction, a solid billet aluminum, so it's built a holdup on your daily use. If you're beating the crap out of your car, these things definitely hold up. Now they are meant to be used with a five-bolt lug pattern, a 5 by 114.3-millimeter or the 5 by 4.5 inch. That's the lug pattern these are meant to be with. Now if you have a slightly different one, then this isn't gonna be for you. Now it's also coming with a 14-millimeter right hand 1.5 thread pitch lugs which will adapt to your factory studs. You are then going to use your lug nuts that you currently have on your vehicle, whether it's factory or aftermarket that'll fit on these studs. It has the exact same thread pitch as your factory studs. As far as these go, they are hub-centric and they work with factory or aftermarket wheels, so it really works universally with most if not all wheels on the market. Now we're gonna be installing these with our Rovos that we have on the rear end here and as you can see we've got it on our hub and it has a completely flush fitment. Now guys, if you're mounting this to your hub and there's rust or any dirt or anything that would prohibit this from seating completely flush, make sure you clean that off, get that out of the way so it's a safe fitment. You're gonna be torquing down these lugs to 30 foot-pounds in a star pattern and then torquing them down to your factory torque specs. In our case is going to be 100-foot pounds and I'll take you through that in just a little bit. Then you're gonna torque your studs down the exact same way with your wheels installed. The price tag for this set is about 80 bucks and by set, it comes with two for the rear. Now, these are not meant to be used in the front whatsoever. You can end up with some damaged hubs, some damaged wheels. You can also damage the spacer itself on the front end, so really for safekeeping, you want to use these on the rear only. There are other options out there for the front. This is not gonna be the case and it's gonna be a very simple one out of three wrenches on our difficulty meter. You do not want to use an impact gun. You're going to only use a torque wrench. That is literally all you need. I'm gonna be taking off our wheels using air tools and impact gun, but when it comes to the installation, no impact guns. You don't want to cause any damage here. Just use a torque wrench. Took about 30 minutes from start to finish to do both sides. It's super simple. Let's get to it. Tools used in this install include a torque wrench, impact gun, 22-millimeter socket, and a 7/8 socket. First up here guys, we got to get our car up in the air to remove our one rear wheel. What we're gonna do is put ours on the lift, but if you're working in the driveway at home, just make sure you're properly supporting the vehicle on jack stands before you do anything. So let's get this up in the air and get that wheel off. All right, now we can grab our lug. We're gonna use air tools to get these five lugs off. All right. Now you can grab your spacer. You're gonna set that over the factory studs. Now what you're going to need to do is seat it all the way up against the rotor. If you have rust or anything that's prohibiting it from seating completely flush, you want to clean that off. Once it seats flush, these lug nuts that come pre-installed over the studs on the adapter aren't actually gonna go on those studs. They're gonna go in your factory studs. So we're gonna remove those and install them on your factory stud. Do that for all five. Now guys, once you have these hand tight, you're gonna grab your 22-millimeter socket with a thin wall or a 7/8 socket with a thin wall to fit inside of these slots to tighten down the lugs provided in the kit on your factory studs to 30 foot-pounds. Once all of them are tightened down to 30 foot-pounds in a star pattern, star pattern being top, cross, cross. You want to do it just in a star pattern that evenly distributes the torque. Now once you do 30 foot-pounds for all of them, torque them down to factory spec. In our case 100 foot-pounds. Refer to your manual for the factory wheel lug torque specs. Perfect. At this point, we can throw our wheel back on and do the same thing to our factory lugs. All right, so now I've got our lugs here. I'm gonna tighten these down by hand all the way down then we're gonna go 30 foot-pounds, then our factory spec. Now, the spacer's install instructions in the kit do clearly state you don't want to use an impact gun for this. Put them down by hand, use your torque wrench to 30, reset it to 100 and do it again. You just want to make sure you're doing this exactly how it should be done from the manual, from the factory specifications just so you don't cause any damage to the hub, the spacer itself or your wheel. As you can see, we put this on no problem with the hub-centric spacer. There's absolutely zero clearance problems between the studs on the inside. They're just the perfect fitment. All right, so now we got them hand tight. Let's do 30-foot pounds. Perfect. Now you can repeat this exact same process for the other side. That's going to wrap up my review and install for the 1-inch Billet Aluminum Hub-centric Wheel Spacers available for the 2015 and newer Mustang. You can get yours right here at

      Product Information

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


      • Intimidating Muscular Stance
      • 1" (25.4mm) Hub-Centric Spacers
      • Strong, Durable Billet Aluminum Construction
      • Includes Pre-Installed 14mm Right Hand 1.50 Thread Pitch Studs and Lug Nuts
      • 5x4.5" (5x114.3mm) to 5x4.5" (5x114.3mm) Bolt Pattern
      • Designed to Work with Factory and Aftermarket Wheels
      • Sold as a set of two spacers
      • Designed for Rear Wheels
      • Fits all 2015-2020 Mustangs


      Intimidating Muscular Stance. A set of Billet Aluminum Hub centric Wheel Spacers will set your rear wheels out an additional 1" (25.4mm) giving your S550 Mustang a more intimidating muscular stance getting rid of that wimpy tucked in commuter car look increasing your Pony's "wow" factor.

      Solid, Durable Construction. CNC-Machined out of a solid block of billet aluminum for superior strength and durability, these Mustang wheel spacers will last a lifetime.

      Hub centric Design. These Billet Aluminum Wheel Spacers use a Hub Centric design, meaning that the center of the wheel hub lines up exactly to the diameter of the axle hub, giving you a perfect secure fit.

      Designed For Factory And Aftermarket Wheels. These Billet Aluminum 1" wheel spacers are designed to be used on the rear of all 2015-2020 S550 Mustangs equipped with 5 lug 5x4.5" (5x114.3mm) factory or aftermarket wheels installed.

      Spacer lug nuts are included, requires the use of original lug nuts for wheel installation.

      Fitment: 2015 2016 2017 2018 2019 2020 Details

      MPN# 5450-5450-A14

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (100+)

      Write a Review

      Ratings Summary

      4.8 out of 5 overall rating from 100+ customers

      • April 04, 2020

        5 2019 EcoBoost - alex

        wheel spacers

        product fits awesome highly recommend if you are looking for a wider look on your mustang

        Helpful (0)
      • April 01, 2020

        5 2015 GT - guard5oh


        Added 1" spacers all around and the fitment just looks so much better as the wheels are pretty much flush. Got rid of that horrible tucked in look!

        Helpful (0)
      • March 22, 2020

        5 2017 GT - 2fast2furious

        1” spacers billet

        For anyone out there trying to give their mustang 5/0 an more beefier aggressive look this is key. Highly recommended

        Helpful (0)
      • March 19, 2020

        5 2018 GT - RP

        1 Inch Billet Aluminum Hubcentric Wheel Spacers

        Simple straight forward install. After car was raised it took about 20 minutes to complete the install and get the car back on the ground.

        Helpful (0)
      • February 26, 2020

        5 2016 GT - LEE

        Helpful (0)
      • February 26, 2020

        5 2016 V6 - JusSTANG16

        Great spacers

        1 inch spacers/25mm are definitely the way to go if you wanna show of some meat on those tires! These spacers went on with no problem. Great choice

        Helpful (0)
      • February 18, 2020

        5 2017 EcoBoost - xLalogtz

        Spacers 17 ecoboost

        Gives a beautiful look to the wheels! I’m lowered 1” and it fills the gap beautifully

        Helpful (1)
      • February 14, 2020

        2 2017 V6 - ZacharyT

        For the V6, get 1.5, wheels don't sit flush.

        Construction feels extremely solid and I was surprised at the density which told me they would hold up even under harsh conditions but with the factory studs it doesn't allow the wheel to sit flush and they end up extending out nearly half an inch not allowing to sit flush against the spacers. They do however sit perfectly flush and fit perfectly against the hub. American Muscle's site said it fit with my car but it doesn't. However they were not only quick to replace the item with the more expensive 1.5 but we're friendly and understanding of the situation. Review stars are for the lack of fitting properly. American Muscle's customer support deserves 5 stars. Will do an update when the 1.5s come in.

        Helpful (4)
      • January 15, 2020

        1 2015 GT - JohnH

        one of the lugs broke

        These introduced vibration into my car at high speeds. Also, one of the lugs randomly broke off. I just took them off.

        Helpful (0)
      • January 01, 2020

        5 2017 EcoBoost - MikeH


        Looks great. Mine came a bit nicked up, but it can’t be seen when installed.

        Helpful (0)

      Questions & Answers (91 answers)

      5 Top Rated Questions

      It saids it use for the rears can i install them in the fronts too?

      • Due to the size of the Billet Aluminum Hubcentric Spacers, we recommend they only be installed in the rear. Using a spacer of this size in the front can be dangerous and cause damage to the wheel, spacer and hub.

      Helpful (38)

      I'm running these spacers on the front and rear wheels. They look fantastic, just wondering how much of a long term impact they might have on the wheel bearings.

      • The Billet Aluminum Hubcentric Spacers should have a minimal effect on the wheel bearings longevity.

      Helpful (15)

      hi! can i buy 2 pairs for the front and rear tires?

      • The Billet Aluminum Hubcentric Spacers are designed for the rear only. For the front wheels, we would recommend a 1/4" spacer at the most. We carry the 8mm Wheel & Brake Spacers, item 29910, however, they are not hub-centric.

      Helpful (8)

      These would fit properly on a staggered set? The rear wheels are already a little wider than front

      • The Billet Aluminum Hubcentric Spacers - 1 in. - Pair will work on a 15-17 Mustang with a staggered fitment wheel setup.

      Helpful (8)

      After installing these on my Mustang, will I need to get my car re-aligned and/or re-balanced?

      • The Billet Aluminum Hubcentric Spacers do not require a realignment or re-balance. These can be bolted-on and driven immediately. We highly recommend re-torquing the lug nuts from the spacer to the hub after 80-100 miles of regular driving and then about every 2000 miles from that point.

      Helpful (8)
      10 More Questions
      How will these work on my PP Mustang Gt with the Eibach sportline lowering springs? Will there be enough clearance? 1 answer
      1) will these fit a 2018 Mustang eco-boost? 2) more importantly will they have any impact on handling, cornering etc. etc. 1 answer
      I have a 2016 mustang gt pp how low would I be able to go if I were to buy these spacers I'm currently on bc racing suspension!? And I'm running the performance pack wheels? 1 answer
      Will this product work with 2017 GT California Special Package wheel? 1 answer
      Just wondering what the torque spec is on the spacers? 1 answer
      Hi, I have a question. Do the original bolts that are installed in the car not hinder the wheel from fully seating? Does the 5 bolts allow the two surfaces to be completely in contact? Is it necessary to modify the wheel or bolts so that they are fully seated? thanks 1 answer
      I have 19inch wheels and dropped the front 1.2inches and the back 1inch. Will I have a problem with the tires rubbing? 1 answer
      How to torque the spacer? I dont get it. Can you explain me how can i do that at home? 1 answer
      Do they come with all 4 spacers or just 2? 1 answer
      Hey hows it going,? So my question is for how long can I have these spacers in the car 0 answer

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (2) 1" Wheel Spacers
      • (10) 14mm Right hand 1.50 thread pitch lug nuts

      Tech Specs

      • 10 x Preinstalled Studs
      • 10 x Steel Lug Nuts - 14mm Right Side 1.50 thread pitch
      • 74mm/2.91 inch internal diameter
      • 5x4.5" (5x114.3mm) bolt pattern to 5x4.5" (5x114.3mm) bolt pattern

      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

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