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BBK Rear Upper & Lower Control Arm Kit (99-04 GT, V6, Mach 1)

Market Price $344.99 You Save 13% ($45.00)
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  • Item 56091
  • MPN# 25260

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Features, Video & Details

  • Improves Traction
  • Powder Coat Finish
  • Polyurethane Bushings
  • Includes Both Upper & Both Lower Control Arms
  • Fit 1999 to 2004 Mustangs, Excludes IRS Cobra.

Review & Installation Video

Review & Install Video

Hey. everybody, I'm Justin with, and in this video, I'm gonna be talking about a few upper and lower control arm options from BBK, available for your '79 to 2010 Mustang. If there's ever been one company that has truly flown the Mustang flag since day one, it's BBK. They've been showing their support for the Mustang and it's owners since the mid-80s, and show no signs of letting up anytime soon. As many of you guys probably already know, BBK makes a wide variety of parts for many different applications, including exhaust systems and cold air intakes, headers, and even suspension components like I'm talking about here today. Now the parts I have with me in this video consist of an upper and lower rear control arm kit, available for both your three and four link Mustang. So when ordering, just make sure you grab the right set for your generation. So the job of the rear upper and lower control arms is to brace and link the rear end of your Mustang to the chassis itself, and ultimately control the movement, hence the name control arm. Now the problem is the factory stuff contains soft rubber factory bushings that do a great job soaking up the excess noise vibration and harshness, but can often times leave a lot on the table when it comes to performance. Now this can cause problems such as bad wheel hop, poor traction, and inconsistent launches, just to name a few. The upper and lower arms from BBK are gonna improve on those areas I just talked about, thanks in part to the high-quality aircraft grade steel, precision welding, and most importantly, the high-performance polyurethane bushings. They're gonna help reduce any excess movement in the rear end, help you put that power down, and improve your handling in the process. Finally here, all the bars have been powder coated in the signature gray from BBK and do include greaseable fittings here to help prolong the lives of the bushings themselves. Since the kit from BBK does include both the upper and lower rear control arms you are gonna be spending a little bit more time in the garage, but overall the install shouldn't be that bad, maybe two out of three wrenches on the difficulty meter. Now we do call this one a full-day install on the site, but I wouldn't be surprised if some of you guys can bang this one out in six hours or less, just to get everything knocked out. So always guys, if you have any questions whatsoever, feel free to reach out to our team of Mustang experts here at AM anytime. They're always standing by ready to give you a hand. So if you guys are looking to put the power down, get off the line a little better, and improve your handling in your 1979 to 2010 Mustang, be sure to check out one of these kits from BBK right here at

Improves Traction. Drag racers know if you can't "hook up" at the track you are going nowhere fast. But with the BBK Rear Upper & Lower Control Arm Kit you will greatly improve traction and decrease your 60ft. times.

Quality Construction. Both the upper and lower control arms are precision welded for extra strength and feature greaseable zerk fittings, polyurethane bushings, and are completed with a baked on powder coat finish for durability and good looks.

Fitment. BBK Rear Upper & Lower Control Arm Kit comes complete with both upper and both lower control arms and are designed for use on the 1999 to 2004 Ford Mustang, excluding 1999 to 2004 Cobras with Independent Rear Suspension (IRS).

Fitment: 1999 2000 2001 2002 2003 2004 Details

What's in the Box
  • (2) Rear upper control arms
  • (2) Rear lower control arms
Installation Info
Tech Specs
Will it fit my Mustang?
  • Bullitt - 01
  • Mach 1 - 03, 04
  • V6 - 99, 00, 01, 02, 03, 04
  • GT - 99, 00, 01, 02, 03, 04

Does not fit 1999-2004 SVT Cobra's with Independent Rear Suspension (IRS)

People Who Bought This Item Also Bought

Most Helpful Reviews


I had the common lateral slop our cars are plagued with and curves were a challenge. Not anymore! I can get my Bullitt well over 100mph and she still feels firmly planted whereas before even at 80 she ...

Read More
Helpful (1)

Easy install, great result

These control arms were very easy to install. Once I got the car in the right position up on jack stands, and loosened the exhaust, the control arms were a snap to unbolt and pop in the new ones. These ...

Read More
Helpful (1)

Overall Rating 4.8 out of 5 stars
Read All 18 Reviews

Customer Photos (10) Submit Your Photo

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5 Questions / 6 Answers

Ask a Question

Does this kit come with hardware and rubber spring isolators?


Helpful (0)
  • Hello, this kit is just going to be rear control arms with bushings. You will be required to reuse stock hardware and isolators. Or new isolators can be purchased as well which is recommended depending on condition of the originals.

    Ryan H

I was considering getting the Bilstein quad shocks for my 2003 Mach 1 but wanted to know if this BBK control arm kit would eliminate the need for the quad shocks.


Helpful (0)
  • The BBK Rear Upper & Lower Control Arm Kit will certainly help with wheel hop and handling just as the quad shock would. You can certainly remove your quad shock if you would like after installing this kit and you will not notice any decrease in performance.


will these work on my 04 gt with the sr lowering springs I have the sr springs and was wondering if they will work without having adjustable uppers for the pinion angle ??


Helpful (0)
  • The BBK Rear Upper & Lower Control Arm Kit (99-04 GT, V6, Mach 1) will work with the SR Springs without having to adjust the pinion angle as the SR Springs are not an aggressive drop.


v6 with 8.8 rear i installed a gt rear axel on my v6 not sure what to get or if this will fit but i want a stiffer suspension do i get parts for gt or v6?


Helpful (0)
  • It will fit see as the rear end architecture is the same across the live axle mustang of this generation.


would this product fit on my roush stage 2 2003?


Helpful (0)
  • These will fit your car but given that it's a stage two it already has some suspension upgrades and you should consult roush to see if it's already been done


Show 1 more answer

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Customer Reviews (18) Write a Review

Overall Rating 4.8

out of 5 stars

Installation Time:Afternoon

  • Handling Improvement 4.846154 4.8
  • Fit 4.615385 4.6
  • Bang For Your Buck 4.615385 4.6

  • 5/5

    Installation Time: Full Day

    October 04, 2015

    Should have gotten these a LONG time ago!!

    Just installed them yesterday, couldn't stop myself from driving it today! The rear end feels so firm, I no longer have to hold down the gas pedal to avoid that annoying wobble it made before whenever I let off the gas to switch gears. If you're getting these, make sure to replace the Rear Axle Bushings too, it is a pain to drill out, but definitely worth it since you're going to be in that area!


    Year: 2004 Submodel: GT Hope Mills, NC

    Helpful (1)

  • 5/5

    Installation Time: Full Day

    May 11, 2014

    Phenomenal product.

    These control arms where just what I needed to fix the rear end!! After my wreck back in December, insurance put used parts on the rear end. I was hearing a lot of clanking and squeaking going on, and after taking the struts out and checking them, and even taking the differential cover off to check the gears I knew it had to be the control arms (heck it was all that was left lol). But after spending all day putting these new ones on from BBK, I am more than impressed with the outcome of this product. No more squeak, no more clanking!! These control arms combined with new bushings for the springs have made the rear end of my car seems like its brand new. Thank you AM!!!!! The only problem I ran into with these control arms is that the kit does not come with new bolts for the sway bar. The old ones would no work, so I went to Lowes for new bolts, nuts, and locking washers. If you run into this problem the ones I used are... 3/8 x 2 Hex Bolts (4) 3/8 -16 Hex Nuts (4) 3/8 Split Lock Washers (8) And on a side note you will have to drop your exhaust in order to get to the upper bolts on the lower control arms. But it was simple.


    Year: 2003 Submodel: GT Asheville, NC.

    Helpful (1)

  • 5/5

    Installation Time: Afternoon

    May 03, 2014

    Easy install, great result

    These control arms were very easy to install. Once I got the car in the right position up on jack stands, and loosened the exhaust, the control arms were a snap to unbolt and pop in the new ones. These new ones fit great, an offer huge difference and handling. Definitely worth the afternoons work


    Year: 2002 Submodel: GT

    Helpful (1)

  • 5/5

    Installation Time: Less than 1 Hour

    April 16, 2014

    Great Results

    These control arms are pretty awesome. They were easy to put on, look great under my car, and make my rear end hook really good when driving hard. The wheel hop I used to feel is gone and when I spin my tires now it feels nice and solid to the ground. Thanks American Muscle


    Year: 2003 Submodel: Mach 1 Pasco Washington

    Helpful (1)

  • 5/5

    Installation Time: Full Day

    February 04, 2014

    great new part

    Better handling, stability, and launches. The uppers were easy to change the lowers were really on there, the bolts were very difficult to remove after getting the nut off. Be ready, they may be a pain but worth it.


    Year: 2004 Submodel: GT

    Helpful (1)

  • 5/5

    Installation Time: Afternoon

    November 27, 2012


    I had the common lateral slop our cars are plagued with and curves were a challenge. Not anymore! I can get my Bullitt well over 100mph and she still feels firmly planted whereas before even at 80 she would feel floaty. Install was easy, lowers went in in 45 minutes, uppers took a little longer but otherwise an easy install.


    Year: 2001 Submodel: Bullitt Georgia

    Helpful (1)

  • 5/5

    Installation Time: Afternoon

    March 25, 2012

    much better

    No more wheel hop. Launch is much improved and overall rear end traction.


    Year: 2002 Submodel: GT scottsdale, az

    Helpful (1)

  • 5/5

    June 30, 2010


    Incredible... Combined with my new rims, tires, and the poly spring isolators, it a WHOLE NEW RIDE... No more hop when accelerating around corners...I would recomend these to anyone. I don't know why I waited to make these the last componant of my suspension upgrade.

    Mike Fellows

    Helpful (18)

  • 5/5

    March 25, 2011

    thoroughly impressed

    The car is nicely planted. No more wheel hop or spin. The tires hook up a lot better also but technically you are limited by your tire compound as well. The construction quality is really good also, I would recommend these over the J&M, lakewood and maximum motorsports since the construction is much better like the steeda arms. still a great buy.

    Tony S

    Year: 2002 Submodel: GT

    Helpful (6)

  • 5/5

    October 14, 2010

    its a good product

    Its good and easy to install. The price was very good for me


    Helpful (5)

  • 5/5

    Installation Time: Full Day

    August 26, 2011




    Year: 2002 Submodel: GT LONG ISLAND

    Helpful (3)

  • 5/5

    January 18, 2011


    Easy to Install. Only about 2 hours with jack stands and hand tools. Helped reduce wheel hop when starting off the line and improved my ride quality in general around town. Dissapointed I waited to make this the last part of my suspension upgrades.


    Helpful (3)

  • 5/5

    Installation Time: Afternoon

    June 16, 2013

    Tight rear....

    This set will make your car feel like a totally different ride. You will have so much fun switching lanes because its just so tight the ground. These eliminate 80 percent of the body roll in the rear, it just feels glued to the ground. Honestly my car is moldy modified but that car will flip before the rear spins out around a turn with the power I have a new set of shocks and tires will also help...that's what I did and it cut the squeaks down to little to nothing. Great product and a great company.. Will continue to buy from am in the future


    Year: 2002 Submodel: GT willow grove

    Helpful (2)

  • 5/5

    Installation Time: Afternoon

    July 30, 2012

    Great product .5 reduction

    I have a 2000 gt with a DSS 5.0 super modular engine, I was getting wheel hop and spinning through 2nd. I installed these with a buddy took about 3 hrs. Took to the track and reduced my launch half a sec on street tires alone. Easy to install, great product, would recommend these control arms. Upper and lower its a good price. Thanks again...


    Year: 2000 Submodel: GT Portland, OR, USA

    Helpful (1)

  • 4/5

    Installation Time: Afternoon

    March 23, 2012

    Awesome purchase for the money!!!

    This really is worth the money! I was having traction issues but this solved it. The only thing I didn't like was the positioning of the grease point on the arms. They were very awkward to get to. Other than that it was an awesome investment.


    Year: 2004 Submodel: GT Columbia City,IN

    Helpful (2)

  • 4/5

    Installation Time: Weekend

    September 11, 2012


    work well but not real cheap..................................................................................


    Year: 2001 Submodel: GT

    Helpful (0)

  • 5/5

    May 23, 2010


    better than other websites

    christian ramirez

    Helpful (1)

  • 4/5

    Installation Time: Afternoon

    March 01, 2017

    BBK Control Arms

    This started out as an easy swap out of my old upper and lower control arms. It went well up until we went to swap the lower control arms. The old ones out(one side at a time) per the instructions. The driver side, no problems, passenger side (I think someone was having a bad day), when they assembled it. They put upper control arm pins in the lower control arm bushings, luckily we had a press in the shop to take care of that issue. That's why the 4 stars.


    Year: 2002 Submodel: GT

    Helpful (0)

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