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Ford Performance Rear Upper Axle Bushings (79-04 All, Excluding 99-04 Cobra)

Item 50384
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      Review & Installation Video

      The Ford Performance Rear Upper Axle Bushings set would be a great way to freshen up the old and tired stuff on your '79 to '04 8.8 rear axle car and will even include some extras such as your C-clips here for the axles in addition to the 4-ounce bottle of friction modifier, all for around 30 bucks.The install is gonna be made a lot easier by using the specialty tool from Maximum Motorsports but can be done the old-fashioned way simply by beating or burning them out. And the install will get a full three out of three wrenches on the difficulty meter with a little bit more detail to come later in the video. So, the 8.8 solid rear on the '79 to '04 four-link cars has two mounting spots on top of the axle or center section where the upper control arms mount to. And like any other bushing that's been through a bunch of miles over the years, they tend to deteriorate over time which can lead to clunks and noises in addition to wheel hop or just general rear end sloppiness.Now, the problem is a lot of people will just typically replace your upper or lower control arms hoping to fix the issue but without addressing the upper axle bushings themselves. This kit from Ford Performance will feature two OE-style rubber bushings already loaded into the steel sleeves and are basically ready to rock and roll and be installed right out of the box.Now, because these are fresh bushings, the traction and general performance should be far better than the 20 to 30 plus-year-old bushings that you're looking to replace. However, if you did want even more performance out of this area and are serious about racing with your car, whether it be drag racing or otherwise, then you could always check out the MR spherical bearing options on the site here that will ultimately give you a little bit more performance and reduce deflection any further.But, just keep in mind, when you go that route, you are ultimately introducing a little bit more NVH or noise, vibration, and harshness. Now because Ford Performance does market this kit as their 8.8 installation kit, they also toss in a brand new set of C-clips or C-locks as they call them, in addition to a 4-ounce bottle of the friction modifier.Again, this isn't required or necessary per se to replace the bushing themselves but they might come in handy down the road if you ever swap axles and need to refill the diff. Now, as far as your installation is concerned, well again, this is one of those times where having the right tool for the job will really help speed up the install. If not, well, then you will need to break out the torch or the hammer or both in order to beat or burn out the existing bushings.Because of that and because of the tight spot where you'll be working, we're gonna call this a strong three out of three wrenches on the difficulty meter and a few hours from start to finish to get everything knocked out. Now, the tool you'll want from Maximum Motorsports is gonna be part number MMT-1. Trust me, guys, don't even think about it. Just buy it and you'll thank me when the job is over.But wrapping things up, guys, if you're looking to freshen up the often forgotten about bushings on your 8.8 solid rear axle Fox body or SN95, then you'll wanna grab this kit from Ford Performance right here at

      Product Information

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


      • Improves Ride Quality and Performance
      • Direct Fit OE Replacement
      • Genuine Ford Racing Part
      • Designed for Solid Rear Axle V8's
      • 4-Ounce Bottle of Friction Modifier Included (For Axle Assembly Swap)
      • Fits 1979-2004 GT, Bullitt, Mach 1 and 1994-1998 SVT Cobra


      Improves Ride Quality. Improve the loose sloppy feel of your Mustangs rear end by replacing those old worn out, factory bushings with a brand new set of Ford Racing Upper Axle Bushings for increased performance and better overall ride quality. This kit is also perfect for installing a new 8.8" axle assembly in your Pony.

      Kit Includes. The Ford Racing 8.8" Rear Axle Install Kit contains two bushings, two C-clips and one 4-ounce bottle of Friction Modifier.

      Legendary Ford Racing Quality. When you're adding performance parts to your Pony, you can't go wrong by installing parts from the folks that know it best. Ford Racing's legendary quality ensures a perfect fit and years of hassle-free use.

      Application. These Ford Racing Rear Upper Axle Bushings (Rear Axle Installation Kit) are designed for use on all 1979 to 2004 8.8" solid axle equipped Mustangs, including the LX, GT, Bullitt, Mach 1 and the 1994-1998 SVT Cobra. It will not fit the 1999-2004 IRS equipped Cobra.

      Fitment: 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 Details

      MPN# M-4050-B

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (46)

      Write a Review

      Ratings Summary

      4.9 out of 5 overall rating from 46 customers

      Installation Time: Afternoon

      Installation Cost: 0-$100

      • March 03, 2020

        5 1987 LX - BrandonM Installation Time: Afternoon

        Exact fit

        Couldn’t find the bushing anywhere else and they were a perfect fit. Tightened up the suspension in the rear. The friction modifier and axle keys were just a bonus.

        Helpful (0)
      • January 15, 2020

        5 1998 Cobra - HoldenCantrell Installation Time: Less than 1 Hour

        just what you need

        nice factory bushings, not some off shore junk. the extras included dont come with aftermarket units so cost evens out. and its all ford parts

        Helpful (0)
      • December 06, 2019

        5 2004 GT - Stangsmoke04 Installation Time: Afternoon

        Definitely needed

        Kind of a pain had to buy air hammer to get old one out. But old one was real bad

        Helpful (0)
      • July 14, 2019

        5 1984 Other - MiguelC Installation Time: Afternoon

        Great part

        Exact fit, and final touches for my rebuild 8.8 rear end.

        Helpful (0)
      • May 24, 2019

        5 2000 GT - JeremyL Installation Time: Afternoon

        Awesome kit!

        These fixed my rear end noise and while the c clips and friction modifier seemed wasteful I ended up rebuilding my Trac Lok clutches a few weeks later and already had these! Awesome price and everything was good quality!

        Helpful (0)
      • May 08, 2019

        5 2001 GT - JacobF Installation Time: Afternoon

        Good stuff

        Works well, came as described. The bushings made a massive difference in how the rear end of my car handled, compared to the blown out stocks

        Helpful (0)
      • March 11, 2019

        5 1994 Cobra - Dbucknell Installation Time: Afternoon

        As expected

        Fixed axle hop issues with my 94 Cobra. Old bushings were worn out. Installed with a block of wood and a big mallet.

        Helpful (0)
      • February 24, 2019

        5 2003 GT - BrandonC Installation Time: Afternoon

        Read first

        The product is great but save yourself and buy removal tool! The tool saves tons of time and frustration!!

        Helpful (1)
      • November 25, 2018

        5 1994 GT - 94vert505 Installation Time: Afternoon

        Worked great

        Old axle bushings were worn out luckily American muscle sells these ford racing axle bushings. You don’t need the c-clips or limited slip additive to install the bushings but it’s nice they come with it. I work in a shop and it took some work to get the old ones out with an air hammer so keep that in mind if you’re doing it yourself. There’s a huge difference in the rear after replacement.

        Helpful (5)
      • November 15, 2018

        5 2000 GT - NickT

        great bushings are for my stang

        im retired now so i look for good deals so i can work on buying more parts as i can afford them and these bushings seem to be a great deal thanks a. m.

        Helpful (3)

      Questions & Answers (7 answers)

      5 Top Rated Questions

      I have a 2001 gt and I've been trying to beat and pry the old ones out but they will not budge. Any answers to help? And the new c clips... they have nothing to do with the new bushings? Just axle c clips they are?

      • The Ford Performance Rear Upper Axle Bushings includes 2 axle c-clips. They are not meant for the bushings. Also, we recommend soaking the stock bushings in penetrating oil for a day. That will make it a bit easier to remove them.

      Helpful (1)

      will these fit v6 axle 7.5" ? If so I suggest you include it in the description . I am confused if it fits all mustangs with 8.8" only . Thanks!

      • This will no fit on any of V6 or 4 cylinder mustang 7.5" axles, we do apologize as it does say all in the description and it will have to get fixed on the website.

      Helpful (1)

      What is the C clamps for? Do they come with instruction for a 1993 convertible mustang gt?

      • The C clips are actually designed to hold the axle in place within the differential housing. Without the clip in place, you can definitely get a lot of play with the axle or potentially it could slide out entirely. If your clips are shot and you don't want to replace them or utilize the c clips in this kit, an alternate option would be to get a c clip eliminator kit.

      Helpful (1)

      Are the rubber bushing supposed to spin easily inside the metal sleeves on my Mustangs upper mount on the rearend?

      Are these bushings the same durometer as the 1993 Cobra/FRPP units?

      • Hello! Ford Performance does not list the Durometer of the Ford Performance Rear Upper Axle Bushings

      Helpful (0)
      Post Your Question
      2 More Questions
      Is this enough to do 1 complete axle? 1 answer
      Where exactly does this go? Im wondering if this bushing is for where the rear axle connects to the rear control arm (or aka track arm)? Mine are completely shot and I am having no luck finding them, so is that what these are? 1 answer

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (2) Bushings
      • (2) Axle C-Clips
      • (1) Bottle Of Friction Modifier

      Tech Specs

      Will It Fit My Mustang

      • Bullitt - 01
      • Cobra - 93, 94, 95, 96, 97, 98
      • Cobra R - 95
      • GT - 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 00, 01, 02, 03, 04
      • LX - 87, 88, 89, 90, 91, 92, 93
      • Mach 1 - 03, 04
      • Other - 79, 80, 81, 82, 83, 84, 85, 86

      Fits solid axle Mustangs equipped with a 8.8" rear end. Will not fit IRS equipped Cobra

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