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

Item 24001G94
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      Product Information

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


      • 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

      Ford Performance M-4209-88373

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (73)

      Write a Review

      Ratings Summary

      4.9 out of 5 overall rating from 73 customers

      Installation Time: Full Day

      Installation Cost: $500-$1000

      • January 18, 2020

        5 1995 GT - Anonymous Installation Time: Shop Install Installation Cost: $250-$500

        Change from 3.09 gear to 3.73

        Awesome change really picked up the get in the Go and increase the torque. However, going to try some 3.55 gears as I’m in my 60s and can’t shift as fast as I used to and you really need to with this gear or you will continually hit the rev limiter but love the pulls, lots of power.

        Helpful (1)
      • May 07, 2018

        3 1998 GT - NotStan Installation Time: Weekend

        Buy a different brand

        couldn't get a consistent wear pattern throughout the ring gear. the threads started coming off the pinion from replacing the nut so many times, which is why I settled for the best wear pattern i could get. makes a weird pulsating sound but still runs decently well. Id buy a higher quality gear next time.

        Helpful (6)
      • January 23, 2018

        5 1998 GT - P0L4R8E4R Installation Time: Shop Install

        MORE get up and go

        these gears rock! though it COMPLETELY threw off my speedo and for the life of me i cant fix it, these are great

        Helpful (9)
      • June 17, 2017

        5 1995 GT - Jethro Installation Time: Afternoon

        Works great

        I installed this at the same time i built my engine. These gears helped to make my car feel like a stump pulling torque monster!

        Helpful (8)
      • June 16, 2017

        5 1997 GT - Shiiltta Installation Time: Afternoon

        Great set up

        So I purchased this gear set up for my 97 GT. I've already done a full 97 Cobra swap to it but knew she needed a little more. The gears have helped a ton. Car is happy with the set up aswell. Likes that top end! The gear choice is worth it for a Daily and when you try and do race car stuff. Good enough I purchased 3.73s for my 02 GT aswell

        Helpful (7)
      • June 15, 2017

        5 1998 GT - Chaddyboii

        New gears

        The gears added a lot more pick up between 1st-3rd gear. 5th gear definitely has a better pull. Well worth it

        Helpful (7)
      • June 08, 2017

        4 1995 GT - 95StangNC

        Great gears if installed right lol

        Thes gears gave my almost stock 95 mustang auto 5.0 a more of a jump then the stock gears catches up allot faster. I know allot of people recommend 410s for autos but this is what i would recommend if you plan on changing over to a stick one day. Only bad thing was i should of got someone better then i did to install them because now i have a wine.

        Helpful (8)
      • March 20, 2017

        5 2002 GT - Preston Installation Time: Shop Install Installation Cost: $100-$250

        Good product

        Already have 3.73 gears in my 2002 mustang gt I bought these as a gift for my dad's birthday for his 1995 gt and he loves them.. AM is always my first choice when I'm dealing with the weekend beast. BTW if you get any gears other than stock I recommend you get aluminum drive train because with the stock drive train you will have a lot of vibration with the 3.73 gears.

        Helpful (8)
      • February 16, 2017

        5 1997 GT - BenjaminR Installation Time: Afternoon


        American Muscle shipped it very quick. Great product. Install isnt to bad, did it in a few hours. Will need a new cover gasket and can reuses old shims if in good shape. Remember which one came from where and how. I also replaced all bearings at the same time.

        Helpful (7)
      • October 18, 2016

        5 1995 GT - Mbgarage Installation Time: Shop Install Installation Cost: $250-$500

        So far so good!,

        Happy with it so far, Fast shipping, good product

        Helpful (7)

      Questions & Answers (11 answers)

      5 Top Rated Questions

      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.

      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.

      Helpful (1)

      what speedo gear will I need for my 96 gt with a manual t-45?

      • The T45's from 1996-1998 came with a 8 tooth drive gear and would require a speedometer gear with more than 23 teeth. To get the vehicle to calibrate correctly for this Ford Performance Ring Gear and Pinion Kit, you would need a 21 tooth speedometer gear and a 7 tooth drive gear. Ford Speedo Gear - 21 Tooth - item 53682

      Helpful (0) Show 1 more answer

      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)
      Post Your Question
      6 More Questions
      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 1 answer
      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? 1 answer
      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? 2 answers
      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. 5 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? 1 answer
      1998 cobra I have a 1998 cobra stock, will these gears fit my cobra as well? 3 answers

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Ring gear
      • (1) Pinion gear

      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

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