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Ford Performance 3.73 Gears (05-09 GT)

61 Reviews
Our Price

$144.98

  • Item #24001G05
  • MPN# M-4209-F373N

  • Market Price $173.99
  • You Save 17% ($29.01)
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Product Videos Customer Photos
Features
  • Ford Racing Quality
  • Strong Forged Construction
  • 3.73 Gear Ratio
  • 8.8" Ring Gear Diameter
  • For Street or Track Use
  • Fits 2005-2009 GT, Bullitt and 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.

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


Manual
Gear @25 MPH @35 MPH @45 MPH @55 MPH @65 MPH @75 MPH
1 3888 5443 6998      
2 2301 3221 4141 5061 5981 6902
3 1518 2126 2733 3340 3948 4555
4 1150 1610 2070 2531 2991 3451
5 782 1095 1408 1721 2034 2347


Automatic
Gear @25 MPH @35 MPH @45 MPH @55 MPH @65 MPH @75 MPH
1 3704 5185 6667      
2 2634 3688 4741 5795 6849  
3 1771 2480 3189 3897 4606 5314
4 1150 1610 2070 2531 2991 3451
5 817 1143 1470 1797 2123 2450
Will it fit my Mustang?
  • Bullitt - 08, 09
  • GT - 05, 06, 07, 08, 09
  • GT500 - 07, 08, 09

Most Helpful Reviews

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 (1)

5/5
!!!!!! HOLY SH*T !!!!!!!!

Put on hot rod cams and had to change my gears for the cmas... since its my daily i put in the 3.73's...... from 3.55... OMG what a difference.... its like my car went from ... wow that prety fast to..."HLY ...

Read More
Helpful (1)

Overall Rating 4.8 out of 5 stars
Read All 61 Reviews

Review & Install Video

Customer Photos (4) Submit Your Photo

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Q & A

Ask a Question

What is the top speed of a manual 5 speed GT with these gears?

MrBlacknBlue

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

Hello guys, I recently had this set of gears installed and I've completed my break in period so now its time for the gear oil change. I am wondering it if would be best to go with 75w140 oil which is what the stock gears used on the 08 Stang. I know the gears come with 75w90 but ford had a TSB where they changed all there oil to 75w140 due to complaints of rear end noises.

Cent

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i want to go without a tune or recalibration tool would that work out or would it effect my engine ? and can i go only for the gears and get the other parts later ?

Fawaz20

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Customer Reviews (61) Write a Review

Overall Rating 4.8

out of 5 stars




  • 5/5

    February 15, 2010

    !!!!!! HOLY SH*T !!!!!!!!

    Put on hot rod cams and had to change my gears for the cmas... since its my daily i put in the 3.73's...... from 3.55... OMG what a difference.... its like my car went from ... wow that prety fast to..."HLY F*CKIN SH#T" best performance mod fo the buck hands down!!!!!

    John

    Helpful (1) (0)

  • 5/5

    December 13, 2009

    Dont Fear the gear!

    What a difference!. car actully pulls hard like a V8 should..if i was to do it over again prolly would have went 4.10's but 3.73 are a great daily driver gear...still love the 3.73's

    Chuckie

    Helpful (1) (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 (1) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    October 09, 2011

    Great improvement for your stang

    I know the easiest way for me to have great low end was to buy gears. I choose 3.73 beacse my stang is also a daily driver. I am 18 years old and a mechanic at ford. This took me 1 hour to install. And if you do everything right you wont hear any noise. I didnt need to use the shims that came with the kit becase the pinion depth is set by the factory. I also used the old pinion bearing from the factory pinion. and if you guys ever want to use a new bearing dont just install the bearing and not install the race. Cuz ford redesign the bearing and the factory race is way bigger than the redesigned. Backlash was not an issue for Me. Everythin fit right and i dont hear any noise at all from the new gears. Now i crush ls1's with simple bolt ons.

    GMSPNKR05

    Year: 2005 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 1 Arlington, VA

    Helpful (11) (0)

  • 5/5

    May 11, 2011

    3.73 ford gears

    these gears are a must nice and quiet nice rpm on high way ihave been rebuilding transmissions and installing gears for over 20 years and these are the best gears out there just make sure your pinin depth is correct and your back lash is set correct and these will last a long time .

    craig harkness

    Year: 2006 Model: GT Driving Style: Daily Driver

    Helpful (2) (1)

  • 5/5

    June 19, 2010

    POWER!!!

    This is an awesome product at an even better price, Will turn your car into a rocket, Bearing kit is the same as factory, grate quality and very tough!!!! Thanks AM!!!

    2002 GT

    Helpful (2) (1)

  • 5/5

    Installation Time: Afternoon

    June 09, 2012

    Perfect with Cams

    I recently added FRPP hot rod cams in my 08 automatic mustang with 3.31 gears. It was almost impossible to drive slow around town, the car would buck and jerk and i lost almost all low-end power as the cams like to keep the car in higher gears. Well after installing the 3.73 gears my car run AMAZING. Good low end power for driving around town and getting off the line but the mid-range power is where the car really comes alive and doing 80 on the highway my car is at 2500 rpms. My car is now a beast and I recommend these to anyone installing cams who drive their car daily. They're perfect!

    JLijo21

    Year: 2008 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 1 NJ

    Helpful (6) (0)

  • 5/5

    October 24, 2009

    Wow!!

    Wow these gears amazing. I have an automatic and these gears made a HUGE difference. Thank you Ford Racing and American Muscle.

    Luis

    Helpful (5) (0)

  • 5/5

    July 18, 2009

    FRPP 3.73

    These gears are perfect for my combo, they now sit behind a 450+hp engine and holding fine.

    Jeff Bailey

    Helpful (4) (0)

  • 5/5

    Installation Time: Shop Install

    April 17, 2012

    Great upgrade

    I bought these gears for my '07 Gt (5 speed) with 3 goals in mind. 1: Increase performance 2: reduce my excessive highway cruising speed 3: reduce or eliminate a drone from my axle back exhaust My shop did the installation and there is absolutely no noise from these gears. I re calibrated the speedometer with my Diablo tuner in 5 minutes and corrected the 10 mph error from the new ratio. The exhaust drone that I had on the highway from 60 to 70 mph is totally gone and I no longer find my speed creeping up to escape from the noise. My fuel economy as calculated by the cars computer is 25.5 mpg with the cruise control set to 68 mph. ( I have a C&L cai, Diablo 93 octane tune, under drive pulleys and Ford Racing axle back exhaust). Creeping in slow traffic is easier now and top gear acceleration from 70 to 100+ mph is more impressive. The 3:73 gears really compliment my engine and suspension mods. Yes l like to blast through the gears but I don't need to cruise at 80 anymore to enjoy the sound of the axle back stingers. Mission accomplished!

    Raptor6

    Year: 2007 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 1 Ct.

    Helpful (2) (0)

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