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Ford Performance 3.73 Gears (10-14 GT)

54 Reviews
Our Price

$144.98

  • Item #24001G11
  • MPN# M-4209-F373N

  • Market Price $173.99
  • You Save 17% ($29.01)
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Customer Photos
Features
  • Ford Racing Quality
  • Strong Forged Construction
  • 3.73 Gear Ratio
  • 8.8" Ring Gear Diameter
  • For Street or Track Use
  • Fits 2010-2014 GT and 2010-2014 GT500 Mustangs
Description
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.

Application. This Ford Racing Ring and Pinion Gear set will fit 11-14 Mustang GTs and 11-12 Shelby GT500s. 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: 2010 2011 2012 2013 2014 Details

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

Approximate RPM for 2011+ GT


Manual
Gear @25 MPH @35 MPH @45 MPH @55 MPH @65 MPH @75 MPH
1 4210 5894        
2 2795 3913 5031 6149    
3 1944 2722 3499 4277 5054 5832
4 1518 2126 2733 3340 3948 4555
5 1150 1610 2070 2531 2991 3451
6 748 1047 1346 1645 1944 2243

Automatic
Gear @25 MPH @35 MPH @45 MPH @55 MPH @65 MPH @75 MPH
1 4798 6717        
2 2692 3768 4845 5922 6998  
3 1750 2449 3149 3849 4549 5249
4 1315 1841 2367 2892 3418 3944
5 997 1396 1795 2194 2593 2992
6 795 1113 1431 1749 2067 2384
Will it fit my Mustang?
  • Boss 302 - 12, 13
  • GT - 10, 11, 12, 13, 14
  • GT500 - 10, 11, 12, 13, 14

Most Helpful Reviews

5/5
Awesome Product!

Once installed, my car is a total beast now. This should be the first mod for anyone looking to wake their car up. You will feel the difference, guaranteed!

Helpful (1)

5/5
Gearsssss

I raced a mustang with 4.10\'s with the 3.73\'s and let me tell you that these gears PULL. period.

Helpful (2)

Overall Rating 4.9 out of 5 stars
Read All 54 Reviews

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8 Questions / 4 Answers

Ask a Question

Highway mpg diff between 3.55 and 3.73 in 10' gt manual. i do a lot of highway driving and want to upgrade my gears. I would like to put the 3.73. But if the mpg is a big difference between them and the 3.55. then i may have to go with the 3.55

10silverstang

  • I had a 09gt with 4.10s not good for 5 speed. 3.73 will do perfect! It will pull real nice

    09gt

    Good Answer (1) (0)

Show 2 more answers Question Resolved

What is included in the install kit? If I'll get the gears installed professionally, do I only need to order the Gears and the 8.8 bearing?

Spolo

  • yes, the kit only contains the gears you'll need the pinion bearing/seal separate

    TheMasterofFunkness

    Good Answer (0) (0)

Answer This Question I need this answered (0) (0)

Does the increased rpms when going from 3.31 to 3.73 on a highway daily driver have significant increase on engine wear and tear? Speed limit 75mph.

JMan123

Answer This Question I need this answered (0) (0)

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Customer Reviews (54) Write a Review

Overall Rating 4.9

out of 5 stars




  • 4/5

    Installation Time: Shop Install

    Installation Cost: $250-$500

    November 15, 2013

    DO YOUR HOMEWORK

    Do your homework on rear gears, I personally have a 2010 GT Manual.. because of this, I have 3.55s stock, I thought that I had 3.31s; so my gear change was very minimal and I kind of wish I hadn't feared the gear and went for 4.10s Gears are great though, No whine or any noise and they make shifting slightly smoother. Keep in mind the install is not very cheap, and very hard to do at home, roughly 80 n hour shop fee for a "4 hour" job... I do recommend them though, Good Luck!

    Zachjones

    Year: 2010 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 2 Daytona, fl

    Helpful (2) (0)

  • 5/5

    March 02, 2009

    Gearsssss

    I raced a mustang with 4.10\'s with the 3.73\'s and let me tell you that these gears PULL. period.

    Johny

    Helpful (2) (0)

  • 5/5

    September 22, 2007

    Awesome Product!

    Once installed, my car is a total beast now. This should be the first mod for anyone looking to wake their car up. You will feel the difference, guaranteed!

    Brent

    Helpful (1) (0)

  • 5/5

    March 12, 2010

    ford racing 3.73 gears

    great gears. I would strongly recommend them for anyone trying to get a little more pep for their mustang. Very good quality for the amount you pay. Would buy again.

    jesus arroyo

    Helpful (3) (1)

  • 5/5

    January 27, 2012

    A++

    I recomended. It is a good combination between 3.73 gear and the new generation 5.0 engine with a 6 speed automatic transmision.

    Rod71

    Year: 2011 Model: GT Driving Style: Street / Strip 'Stangs I have owned: 2 Lajas, Puerto Rico

    Helpful (7) (0)

  • 5/5

    Installation Time: Full Day

    April 23, 2013

    Now I feel the car is awake

    So my 2013 GT GB Premium came with the bone stock 3.31 LS Gear ratio of 3.31. Tis ok for hwy, fuel economy driving, but fuel economy and MUSTANG should not be in the same sentence. So one of the first mods I did was yank the 3.31s and ordered these beasts. No the experienced modders will tell ya 4.10s are the way to go, but if you're not use to a car with a lot of grab and hook up, it is best to go from 3.31s to 3.73s. If you want to save some money on gas you could go for 3.55s, respectable gear, but for those of us who want to unleash the beast under the hood... Well, the 3.73 is a great gear for the track and just normal day to day driving. Gear install is about a day, even for the hard core mechanic. It is FORD PART some Ford Racing warranties the item. If you have a new car like I do the rebuild kit is not needed, but if you're doing the switch on a car with 40k+ on the odometer get the rebuild kit and use it. With these gears and a BAMA Performance tune you will feel like you are in a brand new car. Make sure you do use Friction modifier when mixing in the Gear Oil. Also of note, you will need at tuner to reset the axle ratio in the vehicle. No more little speedo gears to change it is all based on a tune. Worth every penny. Cost os parts and install will run you about $600.00 (the $200-$300 price AM feels it should cost must be someone charging $50 labor. Figure the install to be between $375 and $475.

    TheMasterofFunkness

    Year: 2013 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 10+ Philly

    Helpful (6) (0)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $500-$1000

    November 23, 2012

    Ford Racing 3.73 gears

    Sure you can get a cold air intake,tuner and throttle body but the biggest seat of the pants gain you will get will come from gears. My '12 GT came with 3.31's from the factory which are good for gas mileage but swapping them out for 3.73's made a huge difference! To me,3.73's are the perfect mix for decent gas mileage and all out performance. The car isin't screaming down the highway either. I would definitely recomend this to anyone with 3.31's that are looking for a relatively affordable performance mod.

    Davekonabluegt

    Year: 2012 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 2 Severn, MD, USA

    Helpful (5) (0)

  • 5/5

    August 05, 2011

    So far so good

    These gears have made my car wake up. I changed over from 3.31 to 3.73 and I can tell there is a pretty big difference. I did other mods at the same time so still waiting to tell what it did to the MPG.

    Jason

    Year: 2011 Model: GT Driving Style: Daily Driver

    Helpful (3) (0)

  • 2/5

    November 02, 2010

    Bad Alignment

    The gears appeared to be well manufactured, but after trying 24 shims to 56 shims in order to get them to align properly, it was evident that they would never work without producing whine or chipping teeth. I have also installed 3.90 gears on another Mustang with no problem whatsoever; I'm buying Motive gears tomorrow because I trust them a good bit more. I recommend not buying these gears unless you know of some way to keep the teeth from not chipping when the gears will only align at the outside rim. I personally don't feel comfortable with the cruddy alignment I had. Also, beware of putting the gears on your car. Just by rotating the gears after putting them in my gear box to see the wear pattern in the paint, I voided my ability to get a refund from AM. I've had other good products from AM, but unfortunately, this isn't one. I recommend Motive.

    Jesse

    Driving Style: Daily Driver

    Helpful (4) (3)

  • 4/5

    Installation Time: Shop Install

    Installation Cost: $250-$500

    April 14, 2013

    They Help

    They aren't bad def. Make a differance on 60foot times. I was hoping for a little more oomph from them but, again there are noticeable gains. The car doesn't seem to struggle as much off the line and climbs through the gears faster. I lost 5mpgs on the highway but gained about 3 in the city, now I get about 21mpg be it highway or city driving.would I recommend yes, if just for the track 4.10s if u daily drive I would say no lower than these to keep some effeciancy.

    2010rustang

    Year: 2010 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 1 TEXAS USA

    Helpful (2) (0)

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