Win A 2018 RTR Spec 3 Mustang Enter Now!
Talk to a Mustang Expert
Mon - Sun, 8:30 AM EST - 11:00 PM EST

Free Shipping On Orders Over $49. Details

Ford Performance Ring Gear and Pinion Kit - 3.73 Gears (94-98 GT)

Market Price $164.99 You Save 9% ($15.02)
Our Price


FREE Shipping
  • Item 24001G94
  • MPN# M-4209-F373N

Out of Stock Notify Me
Ship to: ASHBURN - 20146
Please enter a valid Postal Code
We're sorry, zip can't be updated at this time.
Choose options to add to cart
    Create a list
    Add to New List

    Saved - View your saved items

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

    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?
    • GT - 94, 95, 96, 97, 98

    People Who Bought This Item Also Bought

    Most Helpful Reviews


    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 (12)


    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 ...

    Read More
    Helpful (7)

    Overall Rating 4.9 out of 5 stars
    Read All 70 Reviews

    Customer Photos (6) Submit Your Photo

    View All 6 Photos

    You Might Also Like

    10 Questions / 6 Answers

    Ask a Question

    Does anyone know if I need a tuner or speedometer gear to fix calibration of speedometer gear. For 96 mustang gt automatic transmission


    • When installing the Ford Performance 3.73 Gears, your speedometer will need to be re calibrated. This can be accomplished by replacing the speedometer gear, or utilizing a Ford Performance Speed cal. A tune would be unable to correct the speedometer for models prior to 1999.

      Rob D

    Helpful (2)

    Anyone know what speedometer gear I need for my 96 mustang gt with automatic transmission. Don't have a 8 tooth drive gear?


    • 1983-1989 Automatic Transmissions require a 7 tooth gear. 990-1998 Automatic Transmissions require a 8 tooth gear.

      AM MikeW

    Helpful (1)

    I want to put 3.73 gear on my 96 mustang gt automatic transmission but it say to replace the speedometer gear and I need a 8 tooth gear but American music don't carry this item can someone help me with this issue.


    • There are two options aside from the speedo gears we carry to adjust your speedometer. One being a speedometer recalibration tool, the other being customer tunes. I will link both below: However with that being said, I would suggest to go with the custom tuner. Not only will it adjust your speedometer, but being that you have an automatic, it will also readjust your shift points.


    Helpful (0)

    I'm just curious. I bought these gears and they are currently being installed. Is there a break in period for rear end gears or no? I've heard both and if yes then how long?


    • hey Gage, There is a break in period for new gears. You don't want to do really any aggressive driving for about 500 miles. Thats about the time needed for the car to adjust


    Helpful (0)

    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


    • 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.


    Helpful (0)

    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?


    • 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!


    Helpful (0)

    More Products You Might Like

    Customer Reviews (70) Write a Review

    Overall Rating 4.9

    out of 5 stars

    Installation Time:Full Day

    Installation Cost:$500-$1000

    • Performance Gain 4.730769 4.7
    • Fit 4.807693 4.8

    • 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 (12)

    • 5/5

      January 14, 2011

      THE BEST

      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 (7)

    • 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)

    • 4/5

      Installation Time: Afternoon

      May 09, 2012

      dont fear the gear

      Unbelievable difference in acceleration! When I get on it I can't even finish 1st without tires spinning and I always churp in second. Definitely feel the g-force.


      Year: 1995 Submodel: Cobra Stratford, CT

      Helpful (3)

    • 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

      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

      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 (3)

    • 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 (3)

    • 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 (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

      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 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

      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

      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

      Installation Time: Afternoon

      January 27, 2012

      great deal

      best deal out there and definatly felt a power increase. GREAT PRODUCT! thanks AM!


      Year: 1995 Submodel: GT Langley, BC

      Helpful (1)

    • 5/5

      Installation Time: Full Day

      December 07, 2011


      It's all about getting there faster and that's exactly what you get. Definitely pleased with them!


      Year: 1995 Submodel: GT

      Helpful (1)

    • 5/5

      February 21, 2011

      pretty good gears

      Meh, they are ok, I should have gone with 4:10's but they will do for now, acceleration did increase, but I was expecting a little more ooomph


      Helpful (1)

    • 5/5

      August 11, 2010

      Improvement at any speed!

      I bought these gears and had them installed. I did a few roll runs to measure the difference in speed. I gained anywhere from 2-4 tenths of a second from a 30-100 or a 50-100mph roll on. I know it will help down low once I get some new tires. Videos are on my youtube if you want to see the difference go here now.


      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)

    Related Mustang Categories