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Ford Performance 3.73 Gears (94-98 GT)

Market Price $173.99 You Save 17% ($29.01)
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  • Item 24001G94
  • MPN# M-4209-F373N

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Features & Details

  • Ford Racing Quality
  • Strong Forged Construction
  • 3.73 Gear Ratio
  • 8.8" Ring Gear Diameter
  • For Street or Track Use
  • Fits 1994-1998 GT and Cobra Mustangs
Improve ET's and low end torque. Are you looking to get more low end grunt off the line and lower ET's at the same time? Then look no further than installing a set of steeper gears in your Pony. Ford Racing Ring and Pinion Gears are perfect for street, road, or race use.

Superior Quality. These Ford Racing 3.73 Mustang ring and pinion gears feature a super strong forged construction, CNC cut & lapped gear teeth, and a black oxide finish to resist corrosion.

Recommended Upgrade. Changing the rear axle gear ratio will throw off the calibration of your Mustangs speedometer, but a new Speedometer Gear is an inexpensive way to fix this issue.

Application. This Ford Racing Ring and Pinion Gear set will fit all 1994 to 1998 V8 Mustangs including the GT and Cobra models. A master bearing kit is recommended by most installers, especially on high mileage vehicles, see drop down option above.

Technical Note. Installation costs will vary, but a good rule of thumb is between $250 and $300. Be sure to work with a reliable shop that you trust for installations. You can also save money on your installation labor by having your Trac-Lok rebuilt at the same time as your gears are installed, see drop down option above.

Fitment: 1994 1995 1996 1997 1998 Details

What's in the Box
  • (1) Ring gear
  • (1) Pinion gear
Installation Info
Tech Specs

Approximate RPM for 1994-1995 GT

Gear @25 MPH @35 MPH @45 MPH @55 MPH @65 MPH @75 MPH
1 3876 5427 6977      
2 2289 3205 4120 5036 5951 6867
3 1100% 2142 2754 3366 3978 4590
4 1150 1610 2070 2531 2991 3451
5 771 1079 1387 1695 2004 2312

Gear @25 MPH @35 MPH @45 MPH @55 MPH @65 MPH @75 MPH
1 2761 3865 4969 6073    
2 1687 2362 3037 3712 4386 5061
3 1150 1610 2070 2531 2991 3451
4 767 1074 1380 1687 1994 2301

Approximate RPM for 1996-1998 GT

Gear @25 MPH @35 MPH @45 MPH @55 MPH @65 MPH @75 MPH
1 3888 5443 6998      
2 2301 3221 4141 5061 5981 6902
3 1518 2126 2733 3340 3948 4555
4 1150 1610 2070 2531 2991 3451
5 782 1095 1480 1721 2034 2347

Gear @25 MPH @35 MPH @45 MPH @55 MPH @65 MPH @75 MPH
1 3267 4573 5880      
2 1783 2496 3209 3922 4636 5349
3 1150 1610 2070 2531 2991 3451
4 805 1127 1449 1771 2093 2416
Will it fit my Mustang?
  • Cobra - 94, 95, 96, 97, 98
  • GT - 94, 95, 96, 97, 98

People Who Bought This Item Also Bought

Most Helpful Reviews

3.73 Gear Install

I just had my 3.73's installed the other day on my 96 GT conv. MAN!!! What a difference. I would defintely recommend buying the bearing kit and the Royal Purple Max Gear oil. I did and I don't have any ...

Read More
Helpful (2)

Dont Fear the gear!

What a difference!. car actully pulls hard like a V8 should..if i was to do it over again prolly would have went 4.10's but 3.73 are a great daily driver gear...still love the 3.73's

Helpful (2)

Overall Rating 4.9 out of 5 stars
Read All 66 Reviews

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6 Questions / 13 Answers

Ask a Question

hi i have a 1996 3.8 v6 mustang will these gears fit it please . also is the ring gear a bolt on or a heat up and sweat on ring please as i cant see well enough in your pictures thankyou


Helpful (0)
  • The Ford Performance 3.73 Gears (94-98 GT) will not fit your 96 v6. This will be for the GTs that have a 8.8" rear end. The V6 will have a 7.5" rear end. You will need the Motive Performance Plus 3.73 Gears (94-98 V6) item number 21107G94.


Will this work on a 2013? I bought these gears with an install kit a while back when I had my 97 and I was wondering if these would work on my new 2013 and if not why?


Helpful (0)
  • Yes, they will fit your 2013 GT as well. 2010-2013 GTs also require the 8.8" Rear Gear Pinion Bearing in additional to the install and bearing kit. But as far as fitment of the ring and pinion, yes - it will definitely work. Hope this helps!


What else? I have a 1995 5.0 auto. Has the stock 2.73s and looking to upgrade to these 3.73s. Im going to get the installation kit and bearing kit. Which speedo gear and which drive gear will I need?


Helpful (0)
  • Upgrading to 3.73 gears on your 1995 automatic, you would need a 7 tooth drive gear and a 21 tooth speedo gear. Reason being, your 95 auto came stock with an 8 tooth drive gear and there is not a compatible speedo gear to properly correct it. Changing to the 7 tooth will allow you to use the 21 tooth speedo gear. If you have any other questions, please don't hesitate to give us a call!


Show 1 more answer

Do gears affect top speed? Does getting bigger gears like 3.73s and 4.10s make you top out faster at lower speed? I want a gear that will help acceleration a lot but i still like going crazy fast. Can you guys make a top speed clip like where you guys explain the product? That would be great.


Helpful (0)
  • Yes, higher numeric rear gear will lower your top speed by a few MPH. They will also make your car quicker to get to top speed. Do not fear the gear.


Show 4 more answers

What is the difference between the three installation kit options? It gives an option for three different installation kits, what's the difference between all of these?


Helpful (0)
  • We do have three different installation kits for the Ford Performance 3.73 Gears (94-98 GT). The Motive Rear End Installation and Bearing Kit - 8.8 in. (86-14 V8; 11-14 V6) and the Ford Performance Ring & Pinion Installation Kit - 8.8in Solid Rear (86-04 V8) will be the same just made by two different brands. The Motive Rear End Installation Kit - 8.8 in. (86-14 V8; 11-14 V6) will just be the installation kit with out the bearings.


1998 cobra I have a 1998 cobra stock, will these gears fit my cobra as well?


Helpful (0)
  • They certainly will fit your Cobra also! You will love these gears!!


Show 2 more answers

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Customer Reviews (66) Write a Review

Overall Rating 4.9

out of 5 stars

Installation Time:Full Day

Installation Cost:$500-$1000

  • Performance Gain 4.772727 4.8
  • Fit 4.818182 4.8

  • 5/5

    Installation Time: Weekend

    January 09, 2012

    Awesome Kit!

    i bought this kit ( 3.73 gears/ royal purple oil/partial installation kit/ speed re calibrator) a little over 2 years ago and just now got time off from school to install it. All i can say about this kit is WOW. everything went together perfectly, no flaws with any of the products sold, and of course the customer service was over the top! Even if my experience was 2 years ago, American Muscle has topped anyone i have bought from leaving a lasting impression. Since this was my first time installing gears, i decided to do it the right way and rebuild the whole rear, which American Muscle had everything i needed for the assembly. My advise to anyone looking at gears: Don't go lower than 3.73, and go with Ford Racing parts. whether going n/a or using a power adder you will undoubtedly notice a major difference and still have comfortable highway driving. Another thing i love about the FRP gears is the fact that all you have to worry about is backlash. The pinion gear has a raised ledge on the back face to compensate for the smaller facing, the good thing is that you can reuse the old pinion shim. Saves a bunch of headache!!


    Year: 1996 Submodel: Cobra Arkansas

    Helpful (3)

  • 5/5

    December 24, 2010

    ford racing 3.73

    put these in my car and it really woke up! have a mildly built up 94gt and on the highway i get over 25mpg still


    Helpful (2)

  • 5/5

    May 12, 2010

    3.73 Gears

    These gears are great, It really woke my car up. I feel a world of difference. I looked into 4.10 gears but I would have lost a lot of top end, These gears are still okay on the freeway. Definatly a good move. Get the speed cal unit to correct speedo you will need it.


    Helpful (2)

  • 5/5

    May 06, 2010

    3.73 Gear Install

    I just had my 3.73's installed the other day on my 96 GT conv. MAN!!! What a difference. I would defintely recommend buying the bearing kit and the Royal Purple Max Gear oil. I did and I don't have any sort of whine, it is just very smooth, and definetly pulls much harder in 1st, 2nd, and 3rd. Thanks to AM for another perfect order!!!


    Helpful (2)

  • 5/5

    April 14, 2010

    Gears, Gears

    Don't fear the gear is correct. I couldn't of said it better. Gas shouldn't be a factor when your driving around in a V8 it's obvious.To those who are concerned don't be. I was too and I must say it was worth the labor. Gas mileage is nothing compared to what you get out of these. If you like to go faster...faster then swap your stock ones for these. I did and already I am regretting not getting the 4:10's. 1st and third never felt better.Thanks AM


    Helpful (1)

  • 5/5

    April 05, 2010

    04GT 3.73gears

    DONT FEAR THE GEAR! The perfect gear for a street car. Decent RPMs on the highway and crazy excelleration through first 3gears. Have them installed by an experiance tech who has done these before. Its hard to keep my foot out of it now!

    Dickie Ayer

    Helpful (1)

  • 5/5

    December 13, 2009

    Dont Fear the gear!

    What a difference!. car actully pulls hard like a V8 should..if i was to do it over again prolly would have went 4.10's but 3.73 are a great daily driver gear...still love the 3.73's


    Helpful (2)

  • 5/5

    December 22, 2008

    Best Bang For The Buck

    If you are looking for the best bang for the buck, look no more. These gears made my 97 Vortech SC Cobra feel like I added another supercharger. Acceleration through all the gears has immensely improved.

    Nestor G.

    Helpful (1)

  • 5/5

    July 21, 2009


    Finally installed my 3.73s- wish I had done it sooner. Good luck trying to shift to third- the g-forces will keep you VERY well planted!


    Helpful (11)

  • 5/5

    January 14, 2011


    i was trying to decide to go 3.73 or 4.10 but 4.10 will be to much. i went for 3.73 and got them installed at a profesional shop at houston performance and woooooow big difference, i love the way my 5.0l 94 stang, pulls now 2nd 3rd and 4th even 5th gear feels like 3rd going at 40 or 50 mph very pleased. if u are thinking about 4.10 and 3.73 go for 3.73 u wouldnt regret it. i recommend

    sergio fernandez

    Year: 1994

    Helpful (6)

  • 5/5

    October 13, 2010

    Good buy for any guy (or gal)

    Bought gears, install kit, and girdle a few weeks ago and had them professionally installed. Very happy with the gears and how well my car pulls now. If you want to make your car a little quicker without major cash, these gears are an excellent choice.


    Helpful (4)

  • 5/5

    Installation Time: Shop Install

    February 24, 2012

    Ford Racing 3.73

    I bought these gears in January for 179.99 and paid the shop 200 bucks for the install. i drove around a couple times for around an hour and then let it sit over night and the whine went down alot the shop said it needs to get a good heat pattern. The gears really wake up you mustang. It plants you in your seat much more then the gear set 3.27 that was in my mustang. Really good performance upgrade for only spending 379.99.


    Year: 1998 Submodel: GT Ohio

    Helpful (3)

  • 5/5

    April 28, 2008

    Great Product

    Once these gears were in there, the car was a beast and burns rubber like crazy! Should be everyone\'s first mod. Don\'t fear the gear! Also, American Muscle never stop impressing me with their great customer service.


    Helpful (3)

  • 5/5

    Installation Time: Afternoon

    December 07, 2011

    '98 GT auto, The Get Up and Go feeling is there! What a rush!

    This mod should be one of the first to any automatic. It's well worth the price! Not only does the car shift better, the throttle response is there whenever you desire it! It's a must that you order the install kit and go to a reputable shop like I did. I should have bought these earlier but it was a Christmas present from me to me.


    Year: 1998 Submodel: GT Maywood, CA

    Helpful (2)

  • 5/5

    November 05, 2009

    OMG!!!! :D

    I didnt think going from 327 to 3.73 would make a big difference.boy was i wrong .A must for a first mod to any mustang.YOU will get planted firm into your seat in 1st and 2nd and 3rd. my fav is 2nd gear on a roll when i romp on it and smoke the tires LOL.A MUST HAVE


    Helpful (2)

  • 5/5

    Installation Time: Afternoon

    August 19, 2015

    Great option for daily driver

    Bought my 98 GT used with 38k miles on it. It came with 2.73 and a Trac-Loc. I wanted a gear that gave great performance, but didn't want to lose streetability. Replaced my 2.73 with the Ford Racing 3.73 and it was a great choice. My RPM's at 70 MPH with 2.73's were at 1700. With 3.73, 70 MPH was around 2300 or 2400 RPM. I'm very happy with this gear and glad I didn't do 4.10's. Will 4.10's accelerate better? Yes. But at 70 MPH you's be up around 2700 RPM. First gear with the 3.73 is pretty low as it is. I wouldn't want anything more than that.


    Year: 1998 Submodel: GT Merrimack, NH

    Helpful (1)

  • 5/5

    May 31, 2010


    Looked at a few gear ratios but couldnt really decide. i wanted something that would make a big difference, but i wanted it to have good street manners as well. went with the 3.73's and it was the ticket dead on. puts me in the rpm range when i need them, yet lets me cruise in 5th with an acceptable rpm range. be sure to get the install kit and you should be good to go. i did the install with a friend and was able to get it done in 4 hours; but prepare for a fight. AM was great as always, fast shipping quality product. (wish this was my 1st mod performed, huge difference over stock which was a 3.27 in my stang)

    Joshua B

    Helpful (1)

  • 5/5

    May 28, 2010

    3.73 2008 GT

    What gear do I get? That is the question burning through your mind, dear reader. I have not had a 4.10 in my car but putting in the 3.73 is with out a doubt a perfect match! The car is tighter on the pick up and it goes like stink! When you want it to be tame it will do that too. RPM increase at 60 mph is only about 200 RPM. Very little loss for a very big gain! I had mine installed by a good mechanic and that ran me a little over $300. A perfectly balanced gear.

    Douglas Kirk

    Year: 2008 Submodel: GT

    Helpful (1)

  • 5/5

    March 03, 2010

    Everyone should get gears!

    I put these and a new diff in my 94 GT... otherwise basically stock... and WOW it really does make a difference... if you are thinking about it... DO IT! you will not regret it!

    Dave Anderson

    Helpful (1)

  • 5/5

    December 10, 2009


    talk about giving ur stang some MPH in a hurry i feel the diff it made when i drive it love it


    Helpful (1)

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