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Ford Performance 4.10 Gears (05-10 V6)

AmericanMuscle no longer carries the Ford Performance 4.10 Gears (05-10 V6). Please check out 2005-2009 Mustang Gears for an updated selection.
14 Reviews
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  • Item #50348G05
  • MPN# M-4209-75410

  • Market Price $199.99
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AmericanMuscle no longer carries the Ford Performance 4.10 Gears (05-10 V6). Please check out 2005-2009 Mustang Gears for an updated selection.

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Product Videos
  • Ford Racing Quality
  • Strong Forged Construction
  • 4.10 Gear Ratio
  • 7.5" Ring Gear Diameter
  • For Street or Track Use
  • Fits 2005-2010 V6 Mustangs
Improve ET's And Low End Torque. Are you looking to get more low end grunt off the line and lower your 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 4.10 Ring and Pinion Gear set will fit all 2005 to 2010 V6 Mustang models equipped with a 7.5" rear end. 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.

Fitment: 2005 2006 2007 2008 2009 2010 Details

What's in the Box
  • (1) Ring gear
  • (1) Pinion gear
Installation Info
Will it fit my Mustang?
  • V6 - 05, 06, 07, 08, 09, 10

Most Helpful Reviews

Awesome Gears

When I bought my mustang I was on a tight budget for my monthly payment, so I bought a 2008 v6 pony package to save a few thousand dollars over the GT. I am a speed freak and I kick myself everyday for ...

Read More
Helpful (11)

This mod really transforms your 4.0 stang!

These gears make a BIG! difference on your acceleration from a dig and less than 60mph punch. I have it installed on a 2008 4.0L Automatic. My gas mileage does suffer on highway considering the RPM's are ...

Read More
Helpful (9)

Overall Rating 4.9 out of 5 stars
Read All 14 Reviews

Review & Install Video

Hey I’m Justin with, and this is our power pack bolt on build up for all 05-09 V6 Mustangs. I know what you’re thinking, a power pack for a V6? Well, yeah, I mean the truth is there are a ton of these 4.0L V6’s out on the road, and honestly they can be pretty quick just given a little help, and that’s exactly what we’re going to do with our 2005 V6 here. We’re going to add some basic performance parts and some acceleration parts, which should hopefully wake up our 4.0L motor, and hopefully give those V8’s a run for their money. But before our car goes under the knife, we’re going to grab a quick baseline dyno run first, then hand the car over to the crew to get everything installed. [Justin] Hey what’s going on Mike? [Mike] Hey what’s up man? [Justin] I know we just finished up installing a bunch of great parts on our V6 here, the first of which was Pypes Mid Muffler true dual system, I know previously we had a different dual system on this car, how is the mid muffler going to differ? [Mike] First off, there’s little of no drone or resonance thanks to the MAD mufflers and the longer tailpipe, and we’ll get a slight increase in horsepower. [Justin] Alright Mike, moving away from the back of the car down to the hood, I noticed we have the tried and true Airaid cold air intake system in place, besides the obvious bump in power, what else can we expect from that? [Mike] We’re going to get superior filtration thanks to the superflow technology, the filter is much better than any of the typical cotton gauze type filters on the market which will give us maximum protection. The filter is also reusable, so it can save us money in the long run. It’s no tune required, but we’re going to put a tune on it anyway to maximize the power gains, and it looks great under the hood. [Justin] Speaking of looking under the hood, I noticed we also installed the Accel coil pack as well, traditionally we don’t expect to see a ton of power from that mod by itself but it will offer some other benefits, correct? [Mike] Right, overall the drivability is going to be improved, it’s going to help give us a smoother idle, quicker start ups, a little bit of fuel economy, and a slight gain of horsepower. [Justin] Awesome, and I can only assume we’re going to top this all off with one of your custom Bama tunes? [Mike] Oh yeah. [Justin] Very cool, now besides the power expectations, what else can we expect to see from this tune? [Mike] Just like all our tunes, it’s custom tailored to the mods you have on the car. Though it’s not required, we’re going to install one to help tie everything together, and increase our shift firmness and our throttle response. [Justin] Cool, man, well I’m interested to see how these mods come together, are we about ready to do another pull? [Mike] do it man. [Justin] Alright. So our baseline run with our 2005 V6 gave us 173 horsepower and 203 ft/lbs of torque. With our power pack installed we were able to make 189 horsepower and 218 ft/lbs of torque, giving us a peak horsepower gain of 16 over our baseline numbers, and gains of 22 horsepower, and 23 ft/lbs of torque throughout the curve. [Justin] Alright Mike well the car is definitely making some good power, but before you get out of here I just want to ask you about a couple of things the guys installed for us. Ready for this, we got the brand new 4.10 gears, a new diff from Auburn, and finally this control arm combo kit from BBK, what can we expect from all this? [Mike] The 4.10 gears are going to help us accelerate quicker, the limited slip differential is going to equally distribute the power to both wheels, and the BBK control arms are going to take that power and help put it to the ground. [Justin] Well, I guess there’s only one thing left to do, get the car off the dyno and onto the street, just so we can see how everything feels. Thanks again Mike. [Mike] Any time. [Justin] Alright, so we just got done talking to Mike, we got the car off the dyno and onto the street here, and wow, that’s just my first impression, sounds amazing, quiet when you want it to be, but loud when you want it to be, but not in an annoying way, it sounds great. As for the acceleration parts, we had some really good stuff, we got the 4.10’s, Mike laid it out for us, faster acceleration all around, just always in the power band. The Auburn LSD, the car just pulls hard out of the turns, pulls hard out of the hole, and the power you can just feel it going to both wheels now. Finally those BBK control arms, car just feels solid in the rear end, feels solid on the launch, and wheel hop is all but gone. Would I put this car against a V8 right now? Sure, I mean that’s probably half the fun, is really seeing what you’re working with, and having a little fun with these builds, and that’s why we’re car guys. This car is a new animal altogether, I know these V6’s can be totally competent, again as I mentioned earlier they just need a helping hand, they just need to be shown the right way, and with all the parts we added today, we’re definitely on the right track to embarrassing some V8s. So that wraps up our bolt on build up power pack for our V6 here, be sure to check out some of our other bolt on build ups as well, where we improve our handling, and our appearance.

Customer Photos

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8 Questions / 11 Answers

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Will this potentially hurt my rear axel? I'd really like the acceleration of 4.10s in my 2006 4.0, but I would like to know if this might hurt my 7.5 rear end in the long run.


  • These gears are designed for your 7.5" rear so you don't have to worry about hurting your rear by installing them. They are a great upgrade, but do make sure to get the rear installation and bearing kit, the gear oil and a new tune to correct your speedometer! After that, enjoy your new mod!


    Good Answer (2) (0)

Show 1 more answer Question Resolved

What kind of increase should I expect on the quarter mile? Just wanted to see what kind of performance boost this will give over the stock gears and the 3.37? How much of an increase can I expect to see on my ET over the stock gears? How much faster are these than the 3.73's? And what can I expect my rpm's to be at if I am coasting at 80mph? Lastly, how much mpg decrease are you guys seeing with these?


  • on my 2001 mustang gt 5 speed i got about a .6 second increase, so on your stang if its a manual you should expect about the same


    Good Answer (1) (0)

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Does my 06 mustang already have a 7.5" rear end?


  • Yes, your V6 already has the 7.5" rear so these would work perfectly!


    Good Answer (3) (0)

Show 2 more answers Question Resolved

Whats the difference looking to put new gears on my "06 v6 mustang and am wondering what is the difference between the 3.73 gears and the 4.10 gears?


  • The 4.10s are a "shorter" gear. That means acceleration will be slightly quicker than with the 3.73s, but also you'll be turning slightly higher RPMs at highway speed meaning slightly reduced fuel economy.


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5.73 Gears for the Mustang V6 I have seen 5.73 ratio Ford 7.5 gears advertised for the Mustang V6. Is this an alternative to 4.10 gears or would that be too much for street and highway use ? Would these require other component upgrades.


  • you better stay away from anything higher than 4:10...these are 1/8 mile drag strip gears..way too much for street would be wasteing your $$$


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Difference? Hi, I see their is a 3.73 and a 4.10 Ring and pinion gears. What is the difference? I have a V6 mustang and just started messing with it so bare with me.


  • the difference would be the rpm at any different speed...the 4:10 rear..depending on your tire size..will increase the rpm say at 60 mph..It will be somewhere around 3000 rpm..the 3:73 will be at 60 mph..somewhere around 2700 rpm...these gears are used for drag racing..& stop lite take off...but if you have an overdrive trans it really makes no difference...It will definitely use more gas...the rear end in a V6 is good for what you have..if your planning on adding more horsepower..& racing..then go for a lower rear end ratio


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Customer Reviews (14) Write a Review

Overall Rating 4.9

out of 5 stars

Installation Time:Weekend

Installation Cost:$250-$500

  • Performance Gain 4.857143 4.9
  • Fit 4.857143 4.9

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $250-$500

    October 05, 2012

    Awesome Gears

    When I bought my mustang I was on a tight budget for my monthly payment, so I bought a 2008 v6 pony package to save a few thousand dollars over the GT. I am a speed freak and I kick myself everyday for not having spent the little extra money. But that was before I found out about American Muscle. I have had the modding bug ever since I put on the BBK CAI. Now my goal is to make my v6 into the most badass 4.0l possible, and these gears are doing just that. I debated forever between the 3.73's and these gears and ultimately I decided the added acceleration of the 4.10's was worth the gas price and highway revs. I'm about 300 miles deep in my "break-in period" and I took it easy on them for about 100 miles. I have full confidence in these gears and my rear axle so I have beat them up a bit with some absolutely brutal 0-60 runs. They are amazing. My mustang is a daily driver so for all of you that are the same way here are some facts: 1st- Short, torquey and pulls 2nd- Decent length and pulls even harder 3rd- I slaughter people on the on ramps now 4th- Not as useable in town anymore still pulls- at 49 mph you are now at 3,000 rpm (use to be at 3,000 rpm at like 70!) 5th- Becomes a necessity to use- almost like stock 4th- at 49 mph you are at 1,500 rpm now 6th- Need a 6th gear for the highway ; ) Yeah like I said I'm really disappointed with 4th gear. I can now use it in my neighborhood but not much else, 5th is now 4th. Revs are high with the 4.10's but I'd pretty much always be flooring it anyway. The gears had to be shaved down slightly in order to get a perfect fit, I've heard a new LSD fixes that problem but I did not install one with these. My shop did it for $428 and it took them about 5 hours. Overall it is a great product and the average ricer won't touch you!


    Year: 2008 Submodel: V6 Cumming, GA, USA

    Helpful (11) (0)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $100-$250

    July 30, 2012

    This mod really transforms your 4.0 stang!

    These gears make a BIG! difference on your acceleration from a dig and less than 60mph punch. I have it installed on a 2008 4.0L Automatic. My gas mileage does suffer on highway considering the RPM's are about 3000 at 70mph, but city is about the same. They where installed at my local Mustang Racing garage for $250. I only experience vibration at speeds 84-86mph but now that my cars got ~800mi since install, the vibration is starting to go away. At time of writing this review I have 93 octane performance tune, BBK CIA, Port&Polished TB, X-Pipe W/ Dual exhaust, Ford 4.10 gears, NGK Iridium IX plugs w/ Taylor wires, 275/40R17 tires/wheels. I installed all these mods one at a time and the gears made the biggest noticeable gain in acceleration. I'm not running T-lock (posi), but with 275wide tires I don't have issues with excessive burnout from launch, but be aware, punching it from a roll is going to put you back in your seat and spill your drink ;)


    Year: 2008 Submodel: V6 Arlington, TX, USA

    Helpful (9) (0)

  • 5/5

    Installation Time: Full Day

    January 16, 2013

    woke up my full bolt on 4.0 2010 v6 !!!

    i have to say that i didn't expect such a huge increase in performance especially off the line ! i got these gears and and auburn differential and not only do both tires spin now but the amount of power off the line is crazy now. i highly recommend these gears but i will say that if top speed is your thing that these gears lowered my top speed by about 5mph not that big of a deal to me for a ton of low end torque lol ! to anybody who buys these or is thinking about it trust me u are making a good choice !! =) these gears pull hard out the hole and hard out of a turn wut more can u ask for


    Year: 2010 Submodel: V6 New york, NY

    Helpful (4) (0)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $500-$1000

    April 19, 2013


    Love these gears worth losing the little mpg and 5 mph top speed! Had the ford store install with master mechanic because I know if there's a problem I'm takin care of. Also read too many bad reviews for all the gear shops! 625 to install but peace of mind is definitely worth it!


    Year: 2007 Submodel: V6 Gilroy, CA 95020, USA

    Helpful (4) (1)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $250-$500

    June 04, 2014

    Best mod for v6 Mustangs

    Makes the car drive much better. Even makes the auto transmission shift better. Big difference on the freeway. If you like to cruise over 70, be prepared to see rpm's around 2800+. A limited slip is a must for wet roads with these gears. All trans gears, especially 4th and 5th, pull much harder now. To summarize: 1. Over 70 mph=3.73's 2. Around town and two lane highways=4.10's 3. Only buy if you like smiling while driving.


    Year: 2006 Submodel: V6 Olympia, WA, USA

    Helpful (2) (0)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $250-$500

    January 27, 2014

    Awesome performance gain!!!

    If you're looking for a huge difference in performance, then these 4.10 gears are a must! I've already had 4.10 gears installed before, but had to replace them due to an improper install, so I recommend a reputable shop that specializes in differentials. Though it's advised not to press on the pedal all the way until the gears break in, I've been able to test them out on the previous 4.10 gears I've had installed, and all I can say is that they do make a huge difference in acceleration!. There is no whine at all, and also depends on the install. Accompanied by the limited slip differential and a custom tune from American Muscle, you'll be satisfied with the results. American Muscle has been great with the customer service as always. Get the gears!!!


    Year: 2008 Submodel: V6

    Helpful (2) (0)

  • 5/5

    Installation Time: Full Day

    July 25, 2013

    4.10s for my 4.0

    The 4.10s in my 4.0 5 speed are awesome. 1st gear is short but pulls hard, and lights em shifting to 2nd. The highway revs are a bit high but it's well worth it, seems like its in its sweet spot. Worried about losing top end, forget about it. These gears will allow you to pull hard in 5th. Faster then you'd ever get with 3.31s for the amout of power the car makes. I recommend them to anyone thinking of purchasing. Just get them, you won't be disappointed.


    Year: 2007 Submodel: V6 Calgary, AB, Canada

    Helpful (2) (0)

  • 4/5

    Installation Time: Afternoon

    February 14, 2014

    4.10 for city

    if you get this remember that while it will increase your acceleration it will lower your top speed significantly. i had hit 120 mph with out any issues using the stock 3.31 gear, but after installing the gear i am now getting 107 mph and some vibrations (possibly due to need a few more adjustments and parts) at the top end. personally i am wary about changing programming to increase the top speed, but right now i am considering 3.73 to increase the top speed


    Year: 2006 Submodel: V6 New York, NY, USA

    Helpful (1) (0)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $100-$250

    October 18, 2013

    Great product

    Makes great difference on acceleration don't have to shift down to catch up no more. Won't be disappointed.


    Year: 2010 Submodel: V6

    Helpful (1) (0)

  • 5/5

    Installation Time: Full Day

    July 24, 2013

    Fantastic product!

    At first I didn't know what gear ratio to go with. I knew I wanted better acceleration but I was torn between the 3:73's and the 4:10's. Let me tell you, I'm sure glad I picked the 4:10's! The acceleration it amazing! I can even make the wheels cherp going into second! Great product and a must have for any serious motor enthusiast!


    Year: 2005 Submodel: V6 Illinois, USA

    Helpful (1) (1)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $250-$500

    September 29, 2015

    4.10 gears... No other substitute!

    These gears completely change your stang. Had them installed with the yukon LSD and even with both tires turning, will still chirp the tires from 1st to 2nd gear and even from 2nd to 3rd!!! The car just feels 10x faster! If you're worried about losing top speed, don't. The v6 really cant hit it's 'top speed', so you can still get to the same speed just a lot faster. And living in WV, the car pulls up hills a lot faster and easier... actually saw a gain in mpg! Best modification I have ever made! HIGHLY RECOMMENDED.


    Year: 2006 Submodel: V6 Bridgeport, WV

    Helpful (0) (0)

  • 5/5

    Installation Time: Afternoon

    July 07, 2015

    Quality parts from Ford Racing

    These gears seemed to be a lot better quality than the Motive 4.10's I previously had installed. They are the exact same size as the stock gears so everything went in with the same shims and needed no adjustment.


    Year: 2010 Submodel: V6 Butler,Pa

    Helpful (0) (0)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $250-$500

    December 04, 2014

    Sweet for V6

    Had these installed along with the Auburn LSD. Crazy difference in drive performance. Get off the line much faster now, shifting through gears like woah. This is not a mod you want to install yourself unless you have experience. Break in period is about 300 miles to take it easy on them


    Year: 2005 Submodel: V6 NJ

    Helpful (0) (0)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $500-$1000

    December 23, 2013

    4.10 GEARS

    I got these installed with the bearing kit and auburn LSD. I live in Bend, OR, so there are not a lot of shops to go to and trust. Thought about going to FORD but wanted 860.00. I think they smoke crack there. So I went to the Dodge dealer yes I said the Dodge dealer. They charge 600 out the door which was better still pricy but better. Best part was I met the tech who also drove a V6 mustang but works for dodge, go figure. Anyways he is their rear end expert and had it done in 6 hours. Wrote on write up that the gears/ LSD and bearing fit right in but had to stack the shims do to them not being as big as the stock ones and wrote chatter on tight turns. Well I picked up car and "OH MY GOD BECKY" car is amazing from 3.31 stock gears. No whine, vibration, or chattering. And I have gone fast and hard around corners. Well worth the money. make sure you find a good tech to get them in right. Also the site don't tell you but if you get the auburn LSD DO NOT USE SYTH OIL, only use DINO OIL as per auburn. My car is too much fun to drive now and yes highway RPM are high but I don't care, the acceleration is amazing and worth the lost highway mileage, there is a cure. drive the speed limit and not 70 or 80 and you will be fine.


    Year: 2006 Submodel: V6 bend

    Helpful (0) (0)

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