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Ford Performance 4.10 Gears (05-09 GT)

Market Price $173.99 You Save 17% ($29.01)
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  • Item 24002G05
  • 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 2005-2009 GT, Bullitt and GT500 Mustangs

Review & Installation Video

Review & Install Video

I’m Justin with AmericanMuscle.com, and this is our acceleration pack bolt on build up for all 05-09 Mustang GTs. This entire pack has been assembled with one goal in mind, to get our 07 GT off the line much faster. By addressing our gearing, and our grip, we’re actually going to lower our 60 foot times, and improve our overall acceleration, making the car a blast to drive in the process. But before we go over the list of parts we have to install today, let’s get our GT out of the ‘shop and onto the streets and do a baseline 0-60 run, just to see what we’re working with. Before we go installing our acceleration pack here on our 07 GT, we wanted to get the car out of the ‘shop and just do a baseline 0-60 run using our ITSX wireless tuner and my iPad, so there we go, start. Alright so it looks like we just clicked off a 5.5 second baseline run for our 0-60 time. Now we have that out of the way, let’s get our GT back in the shop so we can talk a little bit more about some of the parts we have in store for our GT, and see if we can’t knock that time down a little bit. First let’s talk about gearing, from the factory, our 07 GT came equipped with 3.55 gears, which are great for daily driving, but not the best for all out acceleration. That’s where these Ford Racing 4.10 gears come in, 4.10’s are totally going to wake up our GT off the line, and really give us that low end kick in the pants we’re looking for. That shorter gear ratio means we’ll be rolling through the gears a lot more than we would with our previous setup, so we need to make every shift count. We decided to go with the competition Billet Hurst shifter which it looks like the guys have already installed for us, this shifter should make for quicker, more precise shifts, which will lower our 0-60 time, and make for improved performance overall. Having all the power in the world doesn’t mean anything if you can’t put it down to the ground, and that’s where these next two parts come in. We decided to go with the Exedy Mach 350 Stage 1 clutch to handle the added drivetrain abuse, even though this is only a stage 1, this clutch has been rated to hold up to 450 ft/lbs of torque at the crank, which is more than enough to handle some bolt ons and then some. Besides being able to handle that extra power without breaking a sweat, the pedal feel in this car is only slightly firmer than stock, which won’t wear you out on long trips, or if you get stuck in traffic. Last but not least, we addressed that other very important G word – grip. We opted for BBK’s rear upper and lower control arm set, which should definitely help our GT hook up. Basically, these are going to reduce wheel hop, get us out of the hole a little better, and overall, lower our E.T.s. So now that you know what we have in store for our GT, let’s hand it over to the crew and get the rest of these parts installed, then get it out of the ‘shop and onto the streets so we can take it for a test spin, and do another 0-60 run and see what kind of improvements we made. Alright, so we’re in our 07 GT that we just got done working on, got our acceleration pack installed, and wow! I mean the car just goes now, every time you shift, you’re always in the power band. I love these 4.10’s, man, they’re a lot of fun to drive now. The shifter is working great, a little notchy, but some people like it some people don’t. I for one like it, it makes you feel like you’re actually in gear, kind of hard to miss a gear using this thing. As I was saying, those 3.55’s that the stock Mustang comes with, are probably good for daily driving, I take that back, these gears, the 4.10’s, you stomp on it and you’re going, there’s no downshifting for passing anymore, nothing like that. If it were up to me, I’d have 4.10’s in all of my cars. We haven’t really got to feel the difference that those BBK control arms made yet, just because I haven’t done any hard launches, however, we’re going to take our car back to the shop and do another 0-60 pull, to see if we improved on our time. Alright, now that we have the acceleration pack installed, we did a little driving, car feels great on the street, but now the true test, we’re going for the 0-60 time one more time, using my iPad and our ITSX wireless tuner. So here we go, start. Alright so we just clicked off our second 0-60 run in 5 seconds flat, that’s a half second improvement over our baseline time. Granted, our 07 Gt isn’t completely stock, we do have some basic bolt ons and a tune, but the general idea is just to show you how the acceleration pack is working, and clearly it’s working pretty good. So that does it for the acceleration pack for the 05-09 GT, be sure to check out some of our other bolt on build ups as well, where we dress up our GT a little bit, make it handle a little bit better, and pump up the power.

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 Ford Racing Speedometer Recalibration Tool is an inexpensive way to fix this issue.

Application. This Ford Racing Ring and Pinion Gear set will fit all 2005 to 2010 V8 Mustangs including the GT, Bullitt and GT500 models. A master bearing kit is recommended by most installers, especially on high mileage vehicles, see drop down option above.

Attention 2010 and newer Mustang Owners. Starting in 2010 Ford changed the inner rear gear pinion bearing in all 8.8" equipped Mustangs. Because of this you will require a new 8.8" rear gear pinion bearing (Ford part# 9L3Z-4630-A) for proper installation, please 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: 2005 2006 2007 2008 2009 Details

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

Approximate RPM for 2005-2010 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 4071 5700        
2 2895 4054 5212 6370    
3 1947 2726 3505 4284 5063 5841
4 1264 1770 2276 2782 3287 3793
5 898 1257 1616 1975 2334 2693
Will it fit my Mustang?
  • Bullitt - 08, 09
  • GT - 05, 06, 07, 08, 09
  • GT500 - 07, 08, 09

People Who Bought This Item Also Bought

Most Helpful Reviews

Wake your Pony up!

I was running 3.55 gears and wanted to put some more pep in my Pony's step and Man oh Man did these 4.10's do that! I had them installed with a Ford Racing Traction-Lok LSD with carbon discs. KILLER combo. ...

Read More
Helpful (1)

4.10 Gears w/ Installation Kit

I absolutely love these gears! Probably my favorite mod I've done to my car this far. I recommend getting the installation kit and replace the bearings. The shop charged me $285 and I got to pick it up ...

Read More
Helpful (1)

Overall Rating 4.9 out of 5 stars
Read All 100+ Reviews

Customer Photos (4) Submit Your Photo

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20 Questions / 18 Answers

Ask a Question

55K mile car... first off, Id like to say that you guys have been the most personal, professional people to deal with, and thank you for that. Ive bought over 3000 dollars of parts from you over 2yrs and recommend you to everyone who askes where I get my parts. Enough said, my question is, Im almost ready to pull the trigger on purchasing 4.10's for my 06 GT and I am wondering, can I just buy the gears only at 179.00? instead of buying all the bearings and special gear oil? Im am very good friends with a ford dealer and have a tech that will do my gears, but I get different opinions from everyone whether I should replace bearings at such little milage on the car. I can get the ford gear oil that belongs in the car, but truely, how much more do I need to spend besides the purchase of the ring and pinion gears? Oh, and one more question, I drive mostly 0-65 on a daily and a few times a month I get on the highway and drive 75mph, and have 3.55's stock now, is 4.10's too low, or will they be a great match for my driving habbits? whats your opinion? I have already purchased a tuner and jlt cold air intake, with slp loudmouth exhaust, and am afraid that 3.73's wouldnt make such a big difference, thats why Im focused on 4.10's....


  • Thank you for thinking so highly of us! We love to hear positive feedback from our customers! You are correct in thinking that upgrading from 3.55 to 3.73 won't give you as much of an impact as you're after. You will definitely notice the get up and go of upgrading to the 4.10's over your stock 3.55s though! I would suggest sticking with the 4.10's; anything steeper and you would really start to see the effects on your gas mileage, etc.. Even if you were to start doing more highway driving with the 4.10's installed, you would not notice much of a decrease in mpg, which is always a good thing! In regards to the installation and bearing kit, I HIGHLY recommend you replace those as well. Cars with over 30,000 miles have bearings that are worn to the gears. Replacing all the worn out bearings, shims, etc... when installing new gears will prolong the life of your gears and will prevent any future problems. If a bearing goes bad down the road, you may end up having to replace the bearing and whatever else that bad bearing damaged as well. It's a great preventative measure for a potential giant headache. Changing your gears will also cause your speedometer to read incorrectly. If your have an automatic, it could also cause your shift points to be incorrect as well. Best way to correct that issue is to get a new custom tune for the car. If you have a tuner with AM/Bama, you have Free Tunes for Life and can just get the tune updated for the new gears. If you don't have a tuner, we do offer a kit that includes the gears, a handheld tuner, the rear end installation and bearing kit as well as the necessary gear oil to complete the job! I have attached the kit below if you'd like to take a look! I completely understand that $179.99 for gears along seems like the easier way to go about this upgrade, but if you want to do the job the best and most efficient way the first time around, I couldn't recommend the gear combo kit more! Any other questions, please give us a call! We'd be glad to help!


Show 3 more answers Helpful (3)

Will a100 shot of nitrous work well with 4.10s? My 06 gt is basically stock and was thinking about getting both. Will this harm the engine when nitrous is used because of 4.10s higher rpm?


  • cowboytriplets: Nitrous will work well with just about any gear ratio, it's been my experience that with 4:10 gears the tires want to bust loose when you use the shot right out of the hole. My advice is to look at getting a nitrous programmer that will ease into it down the track, otherwise you're gonna be melting tires off the line depending on your shot for example a 75 shot will probably be fine but a 150 shot is almost guranteed to bust them loose. Either way you're going to love the new found seat of pants power you'll feel from the 4:10's. Have fun buddy :)


Show 5 more answers Helpful (2)

Are 4.10's safe to use with the factory 2-piece driveshaft?


  • Lord yeah they are!! I drive mine daily, more closer to redline than normal, and they have held up tremendously to every bolt-on I have!!! Mines an 06 gt just 120k and the 4.10's are the best mod I have! Just get some soft-wide tires and you'll hook! Also the downside (for some people, I don't mind) is that going with a gear that large it will have a slight roar compared to factory! But install a loud exhaust or turn the music up and you're good!!!


Show 4 more answers Helpful (1)

Do I need the suggestions that go along with the gears, do other people buy them, what do they do , Is the installation easier, should I buy them


  • When installing the Ford Performance 4.10 Gears or any other rear gears, you will need, at minimum, a basic installation kit. However for higher mileage cars, we also recommend changing the bearings as well as preventative maintenance to avoid the labor of taking everything back apart if the bearings fail in the future.

    Rob D

Helpful (0)

Will these gears work well with my v6 mustang (2006)


  • These gears are not compatible with your 2006 V6 Mustang. Sorry!

    Doug P

Helpful (0)

After these are installed how do you fix the speedometer if you do not have a tuner? Will the speedometer always get messed up when installing new gears?


  • Hi, After changing the rear gears on a Mustang the MPH will be off the only other way to correct this is to use the Ford Performance Speedometer Recalibration Tool Item# 50139. Here is the link http://www.americanmuscle.com/ford-speedo-tool-9410.html

    Chris J

Helpful (0)

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Customer Reviews (100+) Write a Review

Overall Rating 4.9

out of 5 stars

Installation Time:Weekend

Installation Cost:$250-$500

  • Performance Gain 4.716418 4.7
  • Fit 4.893939 4.9

  • 5/5

    July 28, 2016

    Wake your Pony up!

    I was running 3.55 gears and wanted to put some more pep in my Pony's step and Man oh Man did these 4.10's do that! I had them installed with a Ford Racing Traction-Lok LSD with carbon discs. KILLER combo. All I can say is the Beast has been unleashed! My car is not a daily driver but if it was these would be just fine IMO. If you are on the fence between 3.73 and 4.10's drop down onto the 4.10 side. I am confident you will not be disappointed and when you hit it for the first time you will have a smile that is a mile wide. I do recommend a Hurst Short Throw Shifter aka Hurst Competition Plus shifter. I have one in my Pony and with 4.10's it is the perfect set up. When they say 40 throw reduction they MEAN it and with 4.10's that is a huge advantage. Go for it! Get these gears! You will be glad you did!


    Year: 2006 Submodel: GT

    Helpful (1)

  • 5/5

    Installation Time: Afternoon

    June 06, 2016

    4.10 Gears w/ Installation Kit

    I absolutely love these gears! Probably my favorite mod I've done to my car this far. I recommend getting the installation kit and replace the bearings. The shop charged me $285 and I got to pick it up after work. These gears with a 93 Race tune makes the shifting very aggressive and it's fantastic! I also have not noticed a drop in gas mileage so I recommend this product to anyone looking for that extra acceleration.


    Year: 2007 Submodel: GT

    Helpful (1)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $100-$250

    April 04, 2013

    4.10 S197

    Love the gears only cost me $225 to get them installed! They keep me in the power band pretty much the whole time I'm driving, will go great when cams and nitrous get put on this weekend!!! Thank AM!


    Year: 2007 Submodel: GT Huntsville, AL, USA

    Helpful (2)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $250-$500

    February 10, 2013

    All new beast

    I put these on my '07 GT that originally had 3:31 gears in it. I completely suggest these gears to anyone fixing up a car. Nailing it in first just squats and spins and when I slam second it keeps going. But at the same time you are definitely accelerating faster than stock. It's just like Justin says on the video about these there is no need to downshift to pass anyone anymore, you are always in your power band. I bought the J&M lower control arms to go along with these but haven't had to time to install yet but I would suggest picking up a pair to help with traction off the line. If you're not 100% sure about these trust me when I say you won't regret them.


    Year: 2007 Submodel: GT

    Helpful (4)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: 0-$100

    October 30, 2012

    Big Change in acceleration!

    The change was instant, it was 10 times more fun to drive!


    Year: 2005 Submodel: GT Wylie, TX, USA

    Helpful (1)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $250-$500

    September 15, 2012

    Too much gear my A**!!!

    if you want a daily driver that will absolutely kill about anything from a stop without even trying, these are the gears you need. they make your car very QUICK! My vehicle isn't stock. I have a vortech h.o. kit, ford racing TB, ford racing intake, and catted long tubes, and dyno tune that hit 504hp 430 tq at 8.8psi first pull and was tuned down to 465hp 404tq 9.3 psi hot! the gears for my setup make everything come together perfectly. every gear has power in all ranges. 5th is 4th, 4th is 3rd, 3rd is 2nd, 2nd is 1st, and 1st is my absolute favorite! you have to know how to feather the gas and clutch on take off to get the best out of these gears. shifting feels so much smoother with no bogging whenever you choose to shift. revs go up of course but who cares! I'm having so much fun, im looking for reasons to go out for a ride anyway lol. theres no reason not to get 4.10 gears unless you make a TON of power down low, and even then there are ways to make it hook. soooo much potential. My setup feels perfect and will only get better with time and money. so will yours with these gears.


    Year: 2008 Submodel: GT Goldsboro, NC, USA

    Helpful (3)

  • 5/5

    Installation Time: Afternoon

    May 20, 2012

    Great upgrade

    This is a must if you plan to do uprades on your gt! I only had one problem installing these gears my pinion was stuck in the bearing but, wow the off the line is great!


    Year: 2005 Submodel: GT Gloucester va

    Helpful (1)

  • 5/5

    Installation Time: Shop Install

    January 27, 2012


    This should be one of the first mods you do to your mustang. It really wakes your mustang up! FRPP 4:10 gears are high quality gears. STOP thinking about it just get these gears now. You will not be dissapointed.


    Year: 2007 Submodel: GT EL Paso, Texas

    Helpful (3)

  • 5/5

    August 13, 2011

    Best bolt on yet

    Best gear set for quickness. Had them professionally installed. I have many bolt ons, this was the cherry on top.

    Steve Cohen

    Year: 2007 Submodel: GT

    Helpful (1)

  • 5/5

    June 28, 2011

    Lovin the Gears!!!!

    So I got my car back today after having the 4.10s installed and I must say that I LOVE THEM!!! Throttle response is a lot better and it did not raise my rpms much! DONT FEAR THE GEAR!!!!! DO IT!!!!!


    Year: 2008 Submodel: GT

    Helpful (3)

  • 5/5

    May 04, 2011


    Yep they are perfect.


    Year: 2007 Submodel: GT

    Helpful (1)

  • 5/5

    May 01, 2011

    Good but Pain

    Very big gain, for the money. But a Huge pain and hassle to put them in yourself. Install instructions are also harder than they look. Other than that they are doing great. Recommend letting a shop do it


    Year: 2008 Submodel: GT

    Helpful (2)

  • 5/5

    December 22, 2010

    Gret mod for the money

    I had to get the clutch pack replaced anyway, so I figured I do gears as well on my 06 GT auto convertible. Really makes a big difference over the 3.31's and I too thought it was going to be too much gear for a daily driver. I was of course wrong and I love the 4.10's. With the JLT CAI, Davad tune and the gears the car feels real good now. Takes a little getting used to at first. When getting to highway speed, I always feel like 'ok, whens the next shift???' Price paid was 700 including the clutch pack, gears and labor

    Eric Demore

    Year: 2006 Submodel: GT

    Helpful (1)

  • 5/5

    September 07, 2009


    really brought the car to life.


    Helpful (1)

  • 5/5

    September 03, 2009

    FRPP 4.10



    Helpful (2)

  • 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 (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 (2)

  • 5/5

    July 09, 2008

    Feels like a whole different car now!

    Wasnt sure whether to go with 3.73s or 4.10s, but after having the 4.10s installed, I have to say, DEFINITELY GO WITH THESE!! Not bad at all.

    Jordan Sears

    Helpful (3)

  • 5/5

    April 20, 2011

    4.10s #1 mod for an auto

    I have an 06 gt stock. I picked up my car yesterday with the 4.10s and oh my God. The acceleration is wicked now. I don't have to mash the pedal to the floor for great acceleration any longer, wither. If you're worried about the higher rpm, don't be, the difference is minimal. And my gas mileage around the city is going up. You'll not find any mod in this price range that will come close to add the performance these gears will. Buy them! You'll thank me!


    Year: 2006 Submodel: GT

    Helpful (30)

  • 5/5

    April 01, 2011

    bogging all gone!

    do you have a automatic? are you tired of the sluggish throttle response off the line?Then these gears are perfect for you! For the money this is a very good option for making your mustang a lot more fun to drive. I hated how sluggish my mustang was out of the hole, but theses gears really wake up a automatic gt


    Year: 2005 Submodel: GT

    Helpful (21)

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