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Ford Performance Ring Gear and Pinion Kit - 4.10 Gears (94-98 GT)

Market Price $189.99 You Save 11% ($20.02)
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  • Item 24002G94
  • MPN# M-4209-G410A

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    Features, Video & Details

    • Ford Racing Quality
    • Strong Forged Construction
    • 4.10 Gear Ratio
    • 8.8" Ring Gear Diameter
    • For Street or Track Use
    • Fits 1994-1998 GT and Cobra Mustangs

    Review & Installation Video

    Review & Install Video

    Hey, I'm Justin with, and this is our acceleration pack Bolt-On Build Up for all 94-98 Mustang GTs. Acceleration is the sum of a couple different parts: power, gearing, grip, and of course, driver. And that's what we're going to be addressing here in our '98 GT and our acceleration pack with one exception, the driver. Now, the parts we have lined up will not only help the car accelerate faster, but its also going to help me, the driver, get the car out of the hole and through the gears as quickly as possible. Now before we go nuts bolting everything up, lets get our GT out of the shop and do a quick 0-60 run, just to see where it stands now. Now before we bolt everything up we want to get a quick baseline 0-60 run down, just to see where the car stands now. We're going to do this using our wireless ITSX tuner, and my iPhone, should give us a good idea of where we stand. So, hit start, hold on. Alright, looks like we just clicked off a 7 second flat 0-60 run here with our '98 GT, which isn't too bad, but honestly, we can do better. So, we're going to get the car back in the shop, talk a little bit more about what we have in store for our '98, and then get it installed. Now, when you think of all-out acceleration, what's one of the first parts that come to mind. Well, if you answered gears, then then you're right on the money, at least here with our build. We went with a set of Ford Racing 4.10 gears, and why not since we're looking for maximum acceleration, while still maintaining great street-ability. Now, from the factories, the SN-95s came equipped with anything from a 2.73 rear, all the way to a 3.27, so making the big step up to a set of 4.10s is really going to be the shot in the arm our GT needed to get out of the hole, and on its way to faster acceleration. The next 3 parts all revolve around our shifting experience, and getting that power down to the ground. First up, we went with Exedy's Mach 350 Stage 1 Clutch. Now this clutch is more than capable of power our GT's putting out now, and we have room to grow, just in case we want to experiment with nitrous, or different power routers, down the road. This next part may not be as important as our gears per se, when it comes to all-out acceleration, but it's just as important, especially on our older car here. I'm referring to this Clutch Adjuster Kit, now besides offering a full range of adjustment for your factory clutch pedal engagement, it's also going to beef up a weak link in your factory clutch cable, namely that cheap plastic factory clutch quadrant. Now this plastic part has been known to flex, or even break under hard shifts, and we all know there's no better to kill your acceleration than a missed shift. By replacing those cheap plastic parts with these hardcore billet pieces, and tossing in a brand new clutch cable, well, we're halfway on our way to a better shifting experience. The second part of that equation should be pretty obvious to just about any SN-95 owner. We replaced our factory, schoolbus style shifter here in our SN-95 with this Short Throw unit from SR Performance. Not only will this reduce our throws by about 30-40%, but it's also going to clean up the entire shifting experience, taking all the sloppiness out of our stock shifter, which is going to make it a lot easier for me to bang through the gears, when we're doing a hard pull. All this for a price that's very hard to beat. With our quickshift goodies in place, the grip of the clutch, and those gears, we should be well on our way to some lower ET's off the line. I guess there's really only one way to find out, so let's get our GT out of the shop one more time, do another blast to 60, and see if we improved our times. Alright, so it looks like we just clicked off a 6.3 0-60 run, with our acceleration pack installed. That's nearly a full second difference over our baseline times, and it's just proof that our acceleration pack is doing a great job. I mean, the clutch was grabbing hard off the line, and we were really rolling through those gears with the SR Performance Shifter. So that wraps it up here with our acceleration pack for the 94-98 GT. Be sure to check out some of our other Bolt-On Build-Ups as well, where we work on our appearance, and our handling.

    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 4.10 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 4261 5965        
    2 2516 3523 4529 5535 6542  
    3 1682 2354 3027 3700 4372 5045
    4 1264 1770 2276 2782 3287 3793
    5 847 1186 1525 1864 2203 2541

    Gear @25 MPH @35 MPH @45 MPH @55 MPH @65 MPH @75 MPH
    1 3034 4248 5462 6676    
    2 1854 2596 3338 4080 4821 5563
    3 1264 1770 2276 2782 3287 3793
    4 843 1180 1517 1854 2192 2529

    Approximate RPM for 1996-1998 GT

    Gear @25 MPH @35 MPH @45 MPH @55 MPH @65 MPH @75 MPH
    1 4274 5983        
    2 2529 3540 4552 5563 6575  
    3 1669 2337 3004 3672 4339 5007
    4 1264 1770 2276 2782 3287 3793
    5 860 1204 1548 1891 2235 2579

    Gear @25 MPH @35 MPH @45 MPH @55 MPH @65 MPH @75 MPH
    1 3591 5027 6463      
    2 1960 2744 3528 4311 5095 5879
    3 1264 1770 2276 2782 3287 3793
    4 885 1239 1593 1947 2301 2655
    Will it fit my Mustang?
    • GT - 94, 95, 96, 97, 98

    People Who Bought This Item Also Bought

    Most Helpful Reviews

    pushes you in your seat

    I got these 4.10 gears about 5 years ago, i had 3.73 before and man what a difference it made, car launches faster and responds quicker, i a must have if you want to wake up your mustang. A mustang shop ...

    Read More
    Helpful (9)

    The 4.10's have it

    I have to agree with Zack from Denver. I did the same deal and wow- what a difference! The 4.10's pick up the front end and just wanna go. If you're on the fence with 3.73's, definitely do the 4.10's. ...

    Read More
    Helpful (9)

    Overall Rating 4.9 out of 5 stars
    Read All 56 Reviews

    Customer Photos (1) Submit Your Photo

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    7 Questions / 6 Answers

    Ask a Question

    I have a 1998 Mustang Cobra with a stock differential. I am looking to install a 4.10 gear and I was wondering if I have to change my carrier? I had a mechanic tell me that I had to change the carrier if I wanted to fit the 4.10 gears inside. Is this true?


    • Since you are looking into making a gear change in your Mustang, you will need to change the carrier out when installing a bigger gear such as these 4.10's.


    Helpful (0)

    What speedometer gear will i need? I am looking to upgrade my manual '98 Mustang GT's stock gears to the 4.10 gears. What speedometer gear would I need to get? Thanks.


    • You will need a calibration device like a Ford Racing M4209ADPTAC. I have installed these on several cars to adjust for different gears I suggest the optional under hood install of the box.


    Helpful (0)

    Will this improve or slow down me 1/4 mile time. I know it will help with acceleration but I noticed the will be going 75 in 4th gear. Somebody help me out thanks !


    • Yes it will improve ur time because u roll threw the gears faster and afraid to go into 5th gear because pulls really hard too!


    Helpful (0)

    What speedo gear would I need if I were to put 4:10's in my 1996 Mustang Gt 5 speed? I would like the speedometer to be somewhat accurate. What speedo gear would I need if I were to put 4:10's in my 1996 Mustang Gt 5 speed? I would like the speedometer to be somewhat accurate.


    • Your 1996 manual GT has an 8 tooth drive gear. Upgrading to the 4.10 gears would require you to swap both your drive gear and your speedo gear. You would now need a 7 tooth drive gear and a 23 tooth speedo gear. Hope this helps!


    Helpful (0)

    speedo gear? Looking to upgrade from the stock 2.73s to 4.10s, I have the 4 speed auto AODE trans, what speedo gear will I need so my speedometer will be on par with the upgraded gears?


    • Your 1995 automatic GT has an 8 tooth drive gear. Upgrading to the 4.10 gears would require you to swap both your drive gear and your speedo gear. You would now need a 7 tooth drive gear and a 23 tooth speedo gear. Hope this helps!


    Helpful (0)

    Do I need to buy the installation kit and bearing kit or just the installation kit? I was looking to buy some gears sometime soon and I am not sure if I need to buy the installation kit and bearing kit or just the installation kit? I currently have 2.73s in my car and they are starting to whine, I'm not sure if any of that would make a difference. Also could you explain your answer? Like why do I need the bearing kit (if needed) and if its not need why would I need it? Thanks!


    • You'd want to purchase the Complete Installation and Bearing Kit. It will come with everything you need to replace while upgrading your gears. Since your Mustang is 17 years old, your current shims, bearings, etc... are worn out and that could also be the cause of your gear whine. The complete kit is also cheap insurance while doing a gear upgrade. You wouldn't want to go through all the trouble of installing new gears just to have a single bearing go bad shortly thereafter, causing you to uninstall everything a second time and put you at risk of that (1) bearing damaging other parts of the ring and pinion. Hope this helps to answer your question! Don't hesitate to contact us if you have any other concerns!


    Helpful (0)

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    Customer Reviews (56) Write a Review

    Overall Rating 4.9

    out of 5 stars

    Installation Time:Weekend

    Installation Cost:$250-$500

    • Performance Gain 4.8 4.8
    • Fit 4.8 4.8

    • 5/5

      December 28, 2010

      pushes you in your seat

      I got these 4.10 gears about 5 years ago, i had 3.73 before and man what a difference it made, car launches faster and responds quicker, i a must have if you want to wake up your mustang. A mustang shop in Denver recommended a go with 4.10 super happy with the swap

      Andres Navarro

      Helpful (9)

    • 5/5

      September 01, 2009

      The 4.10's have it

      I have to agree with Zack from Denver. I did the same deal and wow- what a difference! The 4.10's pick up the front end and just wanna go. If you're on the fence with 3.73's, definitely do the 4.10's. I thought it would be too much gear but it's perfect

      '03 GT 5speed from Philly

      Helpful (9)

    • 4/5

      December 06, 2010

      Had both 3.73 and 4.10's

      Well to start off, these will def. help your acceleration. Im thinking I will go back to the 3.73's because top end is totally lost and at 70 im running 2500rpm+ with these and mpg was def. noticeable with these 4.10's, but they are fun in the city...there just not that great on the highway...probably helps also if you have a 6spd and not a 5 like mine. Cheers!


      Helpful (8)

    • 5/5

      September 09, 2010

      you light up my life

      just had the 410 gears installed on Tuesday, and they are awesome, I had 331 gears with a automatic transmission, and couldn't stand how pathetic it was out of the hole, what a difference the 410 gears are, I am so happy I decided to do this. If your on the fence I would go for it!


      Helpful (7)

    • 5/5

      January 12, 2010


      just got them insalled today and can not believe the difference first gear might as well not be their because you spin but its amazing when you get them to hook up its like being in a new car a rocket!!! car has a slight hum but nothing bad American Muscle has been amazing with everything i have bought from them Thanks

      Brandon Johnson

      Helpful (7)

    • 5/5

      September 07, 2009


      really brought the car to life.


      Helpful (5)

    • 5/5

      Installation Time: Full Day

      March 26, 2013

      Ford Racing 4.10 gears

      Awesome product. And yes go with 4.10 not 3.73. Great match for the AOD.


      Year: 1994 Submodel: GT Portland, OR

      Helpful (4)

    • 5/5

      September 17, 2010

      from 3:27 to 4:10

      the improvement is unreal, best thing you can do to the car for under $200, and the gas millage difference is almost unnoticeable.


      Helpful (4)

    • 5/5

      June 22, 2009


      installed the 4:10\'s at my shop 2 days ago. as soon as i took the car out on the road it was an incredible difference. i was debating 4:10\'s or 3:73\'s im glad i chose 4:10\'s. It breaks the tires loose in second gear just with throttle, Plus the engine sounds awesome in every gear all the time. I eat up camaro\'s and firebirds now..haha

      Steve C from boston

      Helpful (4)

    • 4/5

      Installation Time: Weekend

      January 03, 2014

      Wow best performance gain

      Very time consuming.. I recommend you go to FORD.COM for instructions. I had to open it up twice do to specs, And noise. Not much noise now but a tad bit were I only notice. You feel the instant performance gain, these really throw you back in you're seat.. With the right tiers... Slicks It was hard to install FYI but it was my first rear end.


      Year: 1998 Submodel: GT Kansas, USA

      Helpful (3)

    • 5/5

      Installation Time: Afternoon

      February 26, 2013


      I always had the problem of keeping up with my brother 2002 z28 auto. As soon as I installed the fr 410 gears I bet him I could win A 0-70 race with him. I was had to laugh when we hit 70 and he was over a car length behind me.and all i have is an offroad h-pipe and exhuast. He will still beat me from a rolling start but he doest pull away that hard any not saying you can beat a z28 becuase he was gonna catch up but you will launch hard enough to make it hard for him to I have a 1998 gt auto NEW 255 tires


      Year: 1998 Submodel: GT Houston, TX, USA

      Helpful (3)

    • 4/5

      June 12, 2011


      Only reason I gave these gears 4 stars is because I haven't had the chance to go to the track yet. My stock auto 98 gt spins through first gear now. Before the gears it runs 14.3 in 1/4 mile. Should run 13's now. Anyone that's debating going with 4.10 or 3.73 go with 4.10 totally worth it. If you have a 98 or earlier mustang I would recommend getting a new trans gear for the speedo.

      Davis Kelly

      Year: 1998 Submodel: GT

      Helpful (3)

    • 5/5

      February 19, 2011

      4:10's or nothing!

      If you have a 96 or newer modular engine mustang then you don't need waste your money on anything less than a 4:10! This gear is a wake up call for our engines and is what Ford should have installed from the factory.


      Helpful (3)

    • 5/5

      September 26, 2010

      From 3.27 to 4.10

      So, it was time for a rebuild of the rearend. I ordered the Ford Racing 4.10 gears and installed them, I'm here to say, it has made an incredible difference. The cruising rpms went up by 500 or so. A great, noisefree product. Well worth it.


      Helpful (3)

    • 5/5

      May 01, 2010

      4.10's all the way!

      i got the gears and the rebuild kit. took me from 14.0 @ about 101mph to 13.51 @ 108. my car is a daily driver and my gas mileage actually improved! Great buy, i recommend for these for everyone, its a must have!

      Nauder Bastankhah

      Helpful (3)

    • 5/5

      January 19, 2010

      2001 GT Manual 5 Speed

      These gears are insane! I recommend the Royal Purple fluid and Bearing kit, my old bearings were toast 4k miles later. All in all this is my favorite upgrade I've done to the GT besides the exhaust. Pick up this gear set and you'll be smiling from ear to ear for weeks. As always AM came through solid!


      Helpful (3)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: $100-$250

      December 01, 2012

      Rear end build

      I've got a 98 v6 that for me doesnt put out much at all so i decided to do a massive build because the car has sentimental value to me, I've started with a rear end swap out of a 98gt and knew that new gearing was essential. the acceleration I got from this swap was night and day compared to the wimpy 7.5 with 2.73 gears making it feel like a actual muscle car. I had my rear 255/50/18s chirping and the lack of a one tire fire is so nice. I cannot wait to continue the build and get a crate engine dropped in to really unlock these gears potential. thanks AM


      Year: 1998 Submodel: V6 North Delta ,CAN

      Helpful (2)

    • 5/5

      May 11, 2011

      MUST HAVE!!

      These gears are the best thing I could imagine buying! I've had them in a week, and there is a night and day difference! The car actually launches without having to rev up and drop clutch. And I predict better mpg's because I now cruise 45mph in 4th at 2200 rather than third at 3000. First is gone too quick and second and third go pretty quick too, but the acceleration in third and fourth will blow you mind! I highly recommend this product! And as always, American Muscle got the parts to me fast!


      Year: 1997 Submodel: Cobra

      Helpful (2)

    • 5/5

      July 30, 2010

      99 SVT COBRA

      didnt see this coming!!! these set of gears are probably the best mod i've done to my cobra. acceleration improved amazingly nd gas mileage stayed about the same especially while driving on the highway cruising at 75 mph at about 2000 R.P.M. great mod nd i really recomend it. :)

      Bryan Salas

      Year: 1999 Submodel: Cobra

      Helpful (2)

    • 5/5

      July 25, 2010

      4.10 gears

      Great gear!!! u can definitely feel the difference..if u have a convertible u must get 4.30 because of the weight!!! I regret not getting them!!!great product overall!!


      Helpful (2)

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