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Motive Performance Plus 3.73 Gears (05-10 V6)

16 Reviews
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  • Item #21107G05
  • MPN# F7.5-373

  • Market Price $206.79
  • You Save 9% ($18.80)
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  • Superior Quality
  • CNC-Cut from 8620 Gear Steel
  • 3.73 Gear Ratio
  • 7.5" Ring Gear Diameter
  • For Street or Track Use
  • Fits 2005-2010 V6 Mustangs
Improve Performance. Wake up your V6-powered pony for faster acceleration off the line with a set of 3.73 Motive Performance Plus gears. A steeper set of gears will get you into your power band faster for faster launches and more punch off the line.

3.73 Gear Ratio. 3.73 gears are a great combination of performance and fuel economy that's ideal for a daily-driven 'Stang that sees a lot of highway time. If you put a lot of miles on your Pony and don't want to increase your cost at the pump, a 3.73 ratio will still give you the added acceleration you want without compromising fuel economy dramatically.

Superior Construction. These Motive ring and pinon gears are CNC cut from high grade 8620 gear steel, and factory lapped for precision fit. Each set is hardness tested prior to leaving the factory to ensure the highest quality.

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 Motive Performance Plus Ring and Pinion Gear set will fit all 2005 to 2010 V6 Ford Mustangs 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


Top 10 Contributor

Gear Upgrade

I recently had Motive 3.73's put in my Stang along with a Ford Trac-Loc Posi. I took it to a shop being I didn't have the tools required to set the pinion depth. This is critical to avoid "Gear Whine", ...

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Helpful (11)


I bought these gears along with the installation kit, and Royal Purple fluid. This really woke the car up. I do a lot of highway driving and noticed no change in noise or fuel economy. An SCT tuner will ...

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Helpful (5)

Read All 16 Reviews
Overall Rating 4.8 out of 5 stars

Customer Photos (4) View All Photos

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1 Questions / 1 Answers

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0-60 times What kind of 0-60 gains would a midly modded 2008 v6 (gms coil,taylor wires, NGK spark plugs, BBK cai, american thunder axleback, all without a tune-soon to come) see with these gears.

Kody Year: 2008 Model: V6

  • The stock specs are 0-60 mph : 6.6 sec.(manual), 6.9 sec.(auto). How much time the gears shave off depends on many variables. The driver, tires, temp, the gas, do you have a Posi-Traction Rear, do you have a tuner that has adjusted your shift points? It will make a big difference on how the car accelerates. I have the same set up in my car but I put a Posi-Traction Differential in and the hook up is awesome. Also if you are getting a Bama Tuner (I did) they can adjust your speedometer for the new gears. I was able to cut my 0-60 by 0.8 to 1.0 sec depending on the day with a Automatic Trans.

    fasteddie64 Year: 2007 Model: V6 Top 10 Contributor

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Customer Reviews (16) Write a Review

Overall Rating 4.8

out of 5 stars

Installation Time:Shop Install

Installation Cost:$250-$500

  • Performance Gain 4.666667 4.7
  • Fit 4 4
  • Bang For Your Buck 4.666667 4.7

  • 4/5

    Installation Time: Shop Install

    February 18, 2012

    Gear Upgrade

    I recently had Motive 3.73's put in my Stang along with a Ford Trac-Loc Posi. I took it to a shop being I didn't have the tools required to set the pinion depth. This is critical to avoid "Gear Whine", to deep or shallow and you will get noise on accell. or decell. On to the good part the gears they are top notch and fit great and are stronger than stock. After 500 miles break in they really surprised me. I have a whole different Mustang, rolling slow and punch it both tires break loose and a little sideways drift. From a dead stop it jumps like a cougar pouncing in for the kill, it has so much more "BALLS"!! And yes I have a automatic and the shift from 1st to 2nd chirps V-6. And that was without my Bama Tuner. Don't be tempted to get the 4:10's unless you plan to drag race every weekend you'll run out of wind up top showing who's who on the Interstate and Highways. GEARS SHOULD BE YOUR FIRST UP GRADE AND POSI IF YOU CAN SWING IT!! Hey and if I'm wrong I'll eat my hat!. The best MONEY I ever SPENT Hands Down, You won't be sorry, End Of Story!!!!

    Top 10 Contributor


    Year: 2007 Model: V6 Driving Style: Street / Strip 'Stangs I have owned: 3

    Helpful (11) (0)

  • 5/5

    July 08, 2008


    I bought these gears along with the installation kit, and Royal Purple fluid. This really woke the car up. I do a lot of highway driving and noticed no change in noise or fuel economy. An SCT tuner will allow you to correct your speedometer and get some extra power at the same time.

    Ron B

    Helpful (5) (0)

  • 5/5

    May 15, 2009

    A must!

    This product is a definite MUST a long with the T-lock to V6 enthusiasts! If you want more bang for your buck, then this is surely your item!


    Helpful (4) (0)

  • 5/5

    June 26, 2008


    These gears are exactly what the title says, nasty! All together it was around $750 for the works, however, I do recommend getting a posi-traction differential. My car is a lot more fun to drive now.

    Tyler Malek

    Helpful (4) (0)

  • 5/5

    June 15, 2008

    Worth It, Does The Job

    I bought 3.73 Gears for my V6, I decided to stay with the 7.5in rear. But I must say, the gears do a VERY noticeable difference in acceleration off the line and in the low-mid RPM range. These gears wont hurt your MPG either, it will be near stock. Dont waste your money on FRPP gears or others, Motive Performance is an inexpensive and reliable way to go to upgrade gears. Also, gears only whine if the technician doesnt take the time to align them correctly. Definitely recommended though.

    Andrew F.

    Helpful (4) (0)

  • 5/5

    Installation Time: Shop Install

    November 26, 2011

    Well worth the $!

    Great tiem. Well made. Must be professionally installed. These gears will really improve your off the line times and performance and won't affect your MPG much. My RPMs are only up slightly at highway speed. These gears bring your engine into its power band much quicker. A great investment! Motive gears were highly recommended by my mechanic...I'm glad I followed his advice! Use Royal Purple Limited Slip fluid with these.


    Year: 2008 Model: V6 Driving Style: Daily Driver 'Stangs I have owned: 2 MD

    Helpful (3) (0)

  • 5/5

    November 03, 2009

    one word "awsome"

    put gears in,took just a few hours.Did the 500 mile break in.Now i race all over town! I love the new power.Thanks,American Muscle.Im glad i went with the 373,perfect fit for my daily driver!!

    colleen hartman

    Helpful (3) (1)

  • 4/5

    Installation Time: Shop Install

    Installation Cost: $250-$500

    October 05, 2012

    Motive 3.73 Gears

    Had these gears installed along with the T-LOK from FRPP at a local performance shop. After install the shop owner noted that although the gears were installed to spec, there is a whine when cruising at a constant speed, but not while accelerating or decelerating. It took some getting used to, especially on the freeway when it get very loud.


    Year: 2008 Model: V6 Los Angeles, CA

    Helpful (1) (0)

  • 5/5

    March 24, 2010


    373,perfect fit for my V6 The difference is much, now runs with more power with better acceleration THANK YOU AMERICAN MUSCLE


    Helpful (1) (0)

  • 5/5

    February 19, 2010

    Great Mod

    Great mod albeit expensive with POSI, bearing kit and a $ 430 prof. installation. It was worth waiting and saving. It really gives a boost to your V6. After long search on Inet, AM provided the best prices for these parts.

    Fabian Hug

    Helpful (1) (0)

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