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Ford Performance Ring Gear and Pinion Kit - 4.10 Gears (11-14 V6; 86-14 V8, Excluding 13-14 GT500)

Market Price $192.99 You Save 12% ($23.00)
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  • Item 24002
  • MPN# M-4209-G410A

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    Features, Videos & Details

    • Strong Forged Construction
    • For Street or Track Use
    • Ford Racing Quality
    • 4.10 Gear Ratio
    • 8.8" Ring Gear Diameter
    • Fits 1986-2014 V8 and 2011-2014 V6 (Excludes 2013-2014 GT500)

    Review & Installation Video

    I’m Justin with, and this is our acceleration pack bolt on build up for all 99-04 Mustang GTs. The focus of this pack is of course acceleration, but in order to accelerate faster you need traction, and lots of it. That’s why the majority of the parts used for our build today are focused on getting us off the line much quicker, ultimately resulting in faster acceleration. But before we go over all the parts we have in store for our 2000 GT here, let’s get it out of the shop and do a quick 0-60 baseline run, just to see where we stand now. Alright, before we go installing all of our parts for the acceleration pack, we’re going to do a baseline 0-60 run, using our iTSX wireless tuner and my iPad here, just to see where the car stands now, so hit start and here we go. Alright so it looks like we just clicked off a 6.66 0-60 time with our automatic 2000 GT, which is pretty average for this model car. Now we’re going to take our car back into the shop, talk a little bit more about some of the parts we have in store, and get them installed. Since traction is the theme of the day, what better way to get more of it, than by using a set of these NITTO NT555R Drag Radials, those large tread blocks paired with that real soft compound is going to give us a ton of grip both on the street and at the strip, and should really help our GT get off the line. To further help our GT hook we decided to go with some vital suspension components from QA1, starting with these box style rear lower control arms, these bars are a variation of the classic traction bar design, and basically help keep the rear axle from moving around under load, and especially on hard launches, eliminating any excessive wheel hop. We also decided to go with a set of these QA1 adjustable rear upper control arms, that are fully adjustable while still on the car. These are going to be key to adjusting our pinion angle which is not only important for traction, but also for driveline smoothness. These are really going to help firm up the rear end of the car, and eliminate any side to side sloppiness or wiggle, making the car track a lot straighter, and just making for an overall better driving experience. Moving away from our traction and getting into another big contributing factor to our acceleration, that’s right our gearing. From the factory, our automatic 2000 GT came with 3.27 gears, which is pretty weak for acceleration. That’s where these Ford Racing 4.10 gears come into play, simply put, that shorter gear ratio is going to help our car accelerate faster. Quite frankly, I’m quite anxious to see how it’s going to wake up our 2 valve motor. So now that you know what we have in store for our GT, we’re going to hand the car over to the crew and get everything installed, after they’re all done we’re going to take our GT back out on the street, just to see how it behaves on the road, and to see if we’ve improved on our 0-60 time. Alright so we’re out here on the street with our 2000 GT, we just had the acceleration pack installed by the guys back at the shop, and we’re just cruising, I mean the car is very mild mannered, we’re in overdrive, you’d never be able to tell there’s gears in the car, until you do a little squeeze on the throttle, and man does it go. It goes, it goes, and it hooks hard too. I mean we didn’t even have a chance to heat cycle the tires there and it just dead hooked on the street. Car is a little stiffer in the rear, that’s attributed to the stiffer bushings in both the QA1 lower and upper control arms, but that’s going to be a good thing, that’s going to help keep the car straight, going down the track, it’s also going to reduce our wheel hop as well, and overall just improve our acceleration. So now we’ve had the chance to drive the car around on the street a little bit, see how it reacts in everyday situations, we’re going to put it to the ultimate test, get it back to the shop, do a hard launch, and see if these parts work in lowering our 0-60 time. Alright, so we just finished up our second 0-60 run, and we just clicked off a 5.09 second 0-60, that’s over half a second off our baseline number, so it’s easy to see our acceleration pack is doing its job, and I’ve got to admit, those radials definitely helped us hook on the pavement. So that does it for the acceleration pack, be sure to check out our other 99-04 bolt on build ups where we make our GT handle a bit better, we give it some more power, and dress it up a little bit.

    See our 2011 GT Project Car Now

    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 1986 to 2012 V8 Mustangs including GT, Bullitt, Mach 1, Cobra and the 2011-2014 V6 Mustangs equipped with the 8.8" rear end. 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.

    Installation & Tech
    Differential Gears - Installation Instructions! Differential Gears - Installation Instructions! Mustang Rear Gears - Tech Article Mustang Rear Gears - Tech Article

    Fitment: 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 Details

    What's in the Box
    Hardware included:
    • Ring
    • Pinion
    • Crush sleeve
    • Pinion nut
    • Shims
    Installation Info
    Tech Specs
    Will it fit my Mustang?
    • Boss 302 - 12, 13
    • Bullitt - 01, 08, 09
    • Cobra - 93, 94, 95, 96, 97, 98, 99, 00, 01, 03, 04
    • Cobra R - 93, 95, 00
    • GT - 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 00, 01, 02, 03, 04, 05, 06, 07, 08, 09, 10, 11, 12, 13, 14
    • GT500 - 07, 08, 09, 10, 11, 12
    • LX - 87, 88, 89, 90, 91, 92, 93
    • Mach 1 - 03, 04
    • Other - 86
    • V6 - 11, 12, 13, 14

    Fits Mustangs equipped with a 8.8" rear end

    Most Helpful Reviews

    From 3:27 to 3:73 & now 4:10

    Hey everyone I had purchased the 3:73 last year and was amazed from the difference. Well, here I am again and I had the 4:10 installed. Woooooowwww what a difference, The car moves like a rocket. One thing ...

    Read More
    Helpful (34)

    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 (29)

    Overall Rating 5 out of 5 stars
    Read All 77 Reviews

    Customer Photos (4) Submit Your Photo

    View All 4 Photos

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    1 Questions / 1 Answers

    Ask a Question

    Why are there 2 seperate Ford Performance gears available? One is for 99-04. And these are for 86-14?


    • The gears are categorized by the year-model selected, however, they are the same manufacturer's part number, M-4209-G410A. Sub-categorizing the gears by year range makes it a little easier for searching the product on the webpage.


    Helpful (0)

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    Customer Reviews (77) Write a Review

    Overall Rating 5.0

    out of 5 stars

    Installation Time:Full Day

    Installation Cost:$100-$250

    • Performance Gain 5 5
    • Fit 4.857143 4.9

    • 5/5

      May 24, 2009

      From 3:27 to 3:73 & now 4:10

      Hey everyone I had purchased the 3:73 last year and was amazed from the difference. Well, here I am again and I had the 4:10 installed. Woooooowwww what a difference, The car moves like a rocket. One thing though I can\'t stay in first gear to long because after 2 seconds from the take off you would have too shift into 2nd. It\'s great I tell you, Just remember for every one gear you upgrade, it increases your rpm\'s by 200, but aslong as you have a stick, your 5th or 6th gear would bring your rpm\'s down to about 1400. This gear is truly a must have.


      Helpful (34)

    • 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 (29)

    • 5/5

      August 26, 2009

      FRPP 4.10 Gears for 2001 Mustang GT

      I love these gears! They really wake up the car. I got decent gas mileage 2! I have a 2001 Mustang GT with the AT and it was running 2800 rpms at 75 mph. That equalled out to 22 mpg not too shabby for the performance gain. The LT1 Camaro I ran hated them since he did see the stangs taillights!! Would reccommend these to anyone wanting to drag their car.

      RJ Brown

      Year: 2001 Submodel: GT

      Helpful (23)

    • 5/5

      July 06, 2010

      2005 GT 5sp

      These offer a great "bang for the buck". They work great with a 5 speed, and are NOT too much gear. I did alot of research before pulling the trigger on these. Seems like there was always some bunk-hole saying "don't do 4.10's your top end will be 50mph and you will get 4mpg!" Hogwash. There is a 400 RPM increase in 5th gear @ 70mph over the stock 3.55's. Acceleration in ALL gears is improved. The car will now pull 5th much easier and is out of "drone" range while cruising. My MPG's around town/mixed driving improved by about 1mpg, while highway MPG dropped by about 1. You will need to have a handheld tuner to adjust the spedo for the new gears or else your spedo will be off. I had them installed at a shop for $300. When installed properly, these gears make NO noise. Ford really should make these an option in addition to 3.73's.


      Year: 2005 Submodel: GT

      Helpful (19)

    • 5/5

      November 03, 2009

      Great for Manual!!

      First of alll- I would have been disappointed with anything less that 4.10's matched with my T45R. They stopped my car from just making a lot of noise and made it pull nicely in any gear. Performance and Traction- With my 275 Tires w/ Maximum Motorsports Lower and FRPP Upper control arms really breaking loose usually has to be intentional.... and trust me its nice to only go all "dukes of hazard" if you meant to do so. But for the serious drag racers reading this, some drag radials are recommended to really hook and clock some good 60's. I say that because vs. stock gears I didn't see any time off my 1/8mile(just a few more mph on the speedo). They may not unintentionally smoke the tiers on the street but they can be tricky to hook when every tenth is precious. MPG and RPM's- Well I don't drive a lot of highway and have actually scene and slight mpg boost on average. If I do go on the highway and do a few 4th gear pulls and go like 70-80mpg the whole time I can pretty much watch the fuel gauge drop to "E". But if you can cruise below 65 (2600+/- RPM) than its not too bad for local stuff.

      Brandon Fitzgerald

      Helpful (11)

    • 5/5

      July 01, 2010

      2008 GT/CS

      i have numerous bolt-ons but the 4.10's are by far my best investment. It wakes up your car when you want it to but isn's too much for a daily driver. The description claims to reduce your gas mileage but mine increased somehow, which makes no sense considering i accelerate a lot faster and a lot more often. I recommend having them installed by a shop. i have a buddy who is a mechanic and he had trouble doing some at his work and had to call over help. The highway driving isn't bad. The car will hum a lot louder on the highway but if you punch it'll throw you back. First gear is pretty powerful, Second is great, and once you hit third at full throttle you are happy you bought them! I strongly recommend these especially if you want to mess around with other mustangs because they just cant keep up once you have the new gears.

      Matt Stieg

      Year: 2008 Submodel: GT

      Helpful (9)

    • 5/5

      June 12, 2010

      1999 Cobra

      All I can say is "WOW"....Huge difference in 1st thru 3rd gear, even fourth and fifth are fun to drive in! Put these in along a with new throttle body and exhaust system from the headers back and now my car has woke up!!

      Mike Moyer

      Year: 1999

      Helpful (9)

    • 5/5

      May 21, 2010

      2008 GT/CS

      4.10's really woke my car up. Lot's of fun to drive, made 3rd gear something else to say the least! Very happy.

      James Frakes

      Year: 2008 Submodel: GT

      Helpful (9)

    • 5/5

      January 09, 2009

      Great mod!

      These things are awesome! These 4.10s completely woke up my 2000 auto gt. I couldnt be more pleased. Make sure you search around for a good install price!

      Matt T

      Year: 2000 Submodel: GT

      Helpful (9)

    • 5/5

      August 16, 2008

      Don't Fear the Gear

      Just as the title says. I was afraid at first to put such a steep gear into my daily driver (05 GT). After the install no regrets what-so-ever. 80 mph 3k, 70 mph 2600 rpm. This should be the very first mod to every mustang period. Thanks American Muscle!


      Year: 2005 Submodel: GT

      Helpful (9)

    • 5/5

      October 09, 2009


      GET THESE is all I can say about this. Awsome performance, very noticable with little effect on gas mileage. These gears are perfect for my 07 GT, go with these you wont regret it


      Year: 2007 Submodel: GT

      Helpful (7)

    • 5/5

      October 29, 2009

      4.10 = fun

      Love these gears. Big difference from my 3.31. I still get decent gas mileage too in my 06 GT auto.

      Charles Zimmerman

      Year: 2006 Submodel: GT

      Helpful (6)

    • 5/5

      February 14, 2011

      2002 GT 5 speed manual

      First of all, DON'T FEAR THE GEAR! I jumped from the stock 3.27 to the 4.10's. I was on the fence for weeks on which gear to install. My rpm's at 70 mph are around 2300. These gears are NOT too much for the 5 speeds. I would have been fine going with even more. Your first gear is so sweet. No more feathering the clutch in reverse because of fear of backing up too fast. You can put it in first gear, let out on the clutch, roll for a bit, then punch it and it will smoke the rear tires. Same goes for secong gear. You can constantly get fourth gear scratches. I am pretty much stock except for a CAI, speed shifter and under drive pulleys. This is the first mod anyone should do. There is no way I would have been as happy with 3.73's. I had a professional Mustang speed shop in Houston, Tx install them for a very reasonable price.

      William W

      Year: 2002 Submodel: GT

      Helpful (5)

    • 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 (5)

    • 5/5

      February 20, 2010

      CANDI'S 03 GT 4:10 GEARS

      Had these gears installed--takes a little to get used to, previously had 373----feels like a totally new car! my previous best was 14.2, now 13.93 with more to come---you can see a video vs another gt (mine is the yellow one)


      Year: 2003 Submodel: GT

      Helpful (5)

    • 5/5

      December 08, 2008

      Get some Drag Radials

      Really improves acceleration 0-100. No more lag at the bottom of third and fourth gear. The car will top out now at 110 though and 5th is good for cruising, but will not pull hard once you have topped out 4th. Overall, great for in town racing and the strip, not good for high speed top-speed highway runs. It will also magnify any traction issues you are already having, so the drag radials are going on next!


      Helpful (5)

    • 5/5

      May 04, 2010

      2008 GT/CS

      I got the gears and the rebuild kit also and have had them in for a year and love them. First gear pulls wicked hard and may need aftermaket tires. I've had them on for 8 months now and have had no problems out of them.

      Jason Johnson

      Year: 2008 Submodel: GT

      Helpful (4)

    • 5/5

      June 27, 2009

      4.10\'s for 96 Manual GT

      Just got the 4.10\'s put in yesterday and can feel a huge difference. 2nd and 3rd gear really hauls now! Goes perfect with my short throw shifter. Glad i did\'nt go with 3.73. If you\'re debating between 3.73 and 4.10\'s go with 4.10\'s, you will not be sorry.

      Zack from Denver

      Year: 1996 Submodel: GT

      Helpful (3)

    • 5/5

      June 21, 2009

      4.10\'s for a \'03 Auto GT

      Had the 4.10\'s installed a few days ago for about 580 bucks... 450 for labor, 100 for bearings. A great mod for anyone, don\'t fear the gear. If you drive the speed limit you\'ll get the same MPG. MAKE SURE YOU PROPERLY BREAK IN YOUR GEARS! I\'m still in the break in period but I had to punch it a little merging on the highway and boy it was like a whole new car. When I drain the oil and swap the stock axles for the 28 spline mosers in about 400 miles I\'ll take pictures for ya\'ll. Great buy and a price that can\'t be beaten ANYWHERE!

      Eric U

      Year: 2003 Submodel: GT

      Helpful (3)

    • 5/5

      March 31, 2009


      Just had mine put on, big differnce when hitting the gas in first gear, u can break the tires with no clutch and when shifting to 2nd, break em again halfway through 2nd. Driving 40 mph roll and hitting the floor, you dont see a huge improvement, more from a dead stop... great purchase, glad i went with 4.10 over 3.73


      Helpful (3)

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