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Ford Racing 3.55 Gears (11-14 V6)

13 Reviews
Our Price

$144.98

  • Item #50166G116
  • MPN# M-4209-G355A

  • Market Price $173.99
  • You Save 17% ($29.01)
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Features
  • Ford Racing quality
  • Strong forged construction
  • 3.55 Gear Ratio
  • 8.8" Ring Gear Diameter
  • For street or track use
  • Fits 2011-2014 V6 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 3.55 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 all 2011-2013+ V6 Mustangs. 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.

Mustang Fitment: 2011 2012 2013 2014 Details

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

Approximate RPM for 2011+ V6


Manual
Gear @25 MPH @35 MPH @45 MPH @55 MPH @65 MPH @75 MPH
1 4007 5610        
2 2660 3724 4788 5838 6917  
3 1850 2590 3330 4070 4810 5550
4 1445 2023 2601 3179 3757 4335
5 1095 1533 1971 2408 2846 3284
6 712 996 1281 1565 1850 2135


Automatic
Gear @25 MPH @35 MPH @45 MPH @55 MPH @65 MPH @75 MPH
1 4566 6393        
2 2562 3586 4611 5636 6660  
3 1665 2331 2997 3663 4329 4995
4 1251 1752 2252 2753 3253 3754
5 949 1329 1708 2088 2468 2847
6 756 1059 1362 1664 1967 2269
Fitment
  • V6 - 11, 12, 13, 14

Most Helpful Reviews View All

Overall Rating 4.8/5
5/5
2012 v6 mustang 3.55 gears ford racing

The 3.55 gears were a perfect choice for both Hwy and city driving with little to no mpg loss.The acceration is inproved on both low end and top.Bottm line the car is much more fun and excitng to drive.P.S.

Read More
Helpful (9) (0)

5/5

Top 500 Contributor

Ford Racing Gears FTW

The 3.7L V6 is a great motor, but the problem is that with the stock 2.73 gears, the off the line acceleration and low end torque leaves much to be desired. Sure its great for highway fuel economy, but

Read More
Helpful (6) (1)

Customer Photos

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Q & A (3 Questions, 8 Answers) Ask a Question

Break-in period Is there a break-in period when you install these gears. If so, how many miles? 1st time having a gear change to a car.

DevilMusic Year: 2012 Model: V6

Good Question (0) (0)
  • Ford Racing's installation procedure PDF says the following: STEP 1: Drive the car for at least 30 min. No spirited acceleration. Repeat 2 more 30 min. drive cycles STEP 2: Check gear oil level

    Helpful (0) (0)

    Olitheon Year: 2011 Model: V6

Show 1 more answer Answer This Question

Odometer How do you get the odometer to adjust after installing gears? I have a tuner from this site will a flash do it ? And does it void my warranty?

Kewball012 Year: 2011 Model: V6

Question Resolved
Good Question (0) (0)
  • Not sure about warranty, but my new SCT Bama tuner will fix the speedometer reading. just go through the program and select which gear your using

    Helpful (0) (0)

    Daveh13 Year: 2013 Model: V6

Show 3 more answers

What is the fuel mileage impact? I'm interested in doing a gear swap but am afraid that the MPG impact may be to great. What is the loss of mpg's both in town and interstate driving? Say 70 mph average. Thanks for your help on this.

tjlis2004 Year: 2012 Model: V6

Good Question (0) (0)
  • the mpg loss is minimal. I myself am averageing between 27-30 mpg on hwy. the mileage is a little worse in town but that is mainly because I can't get my foot off the gas! actually hwy driving is much improved because it doesn't lag or struggle in 6th gear like the 2.73's do.

    Helpful (2) (1)

    gwhiz Year: 2011 Model: V6

    Top 250 Contributor

Show 1 more answer Answer This Question

Reviews (13) Write a Review

  • 5 Stars .77 77%
  • 4 Stars .23 23%
  • 3 Stars 0 0%
  • 2 Stars 0 0%
  • 1 Stars 0 0%
4.8

out of 5 stars

12 Customers Recommend this Product

Installation Time:Weekend

Installation Cost:$500-$1000

  • Performance Gain: 4.538462 4.5/5
  • Fit: 4.692307 4.7/5
  • Bang For Your Buck: 4.538462 4.5/5
Filter By Sort By
  • 5/5 Yes, I recommend this product

    October 09, 2011

    2012 v6 mustang 3.55 gears ford racing

    The 3.55 gears were a perfect choice for both Hwy and city driving with little to no mpg loss.The acceration is inproved on both low end and top.Bottm line the car is much more fun and excitng to drive.P.S. the new Ford Racing Gears are as quiet as the stock 2.73.Thank to American Muscle for the great service and help

    lightheart

    Year: 2012 Model: V6 Driving Style: Daily Driver 'Stangs I have owned: 2 flagstaff az

    Helpful (9) (0)

  • 5/5 Yes, I recommend this product

    May 26, 2012

    Ford Racing Gears FTW

    The 3.7L V6 is a great motor, but the problem is that with the stock 2.73 gears, the off the line acceleration and low end torque leaves much to be desired. Sure its great for highway fuel economy, but this is a mustang for crying out loud. I care much more about performance than fuel economy. I had my dealer install the ford racing 3.55 gears and a set of ford racing rear lower control arms, and couldn't be happier with the results. It pulls noticeably more off the line, chirps the tires in the 2nd-3rd shift, and it is much easier to spin the tires. It still gets decent mileage on the Highway, like 27-28 depending on your driving habits. Sure I could've gone with the 3.73 or 4.10 gears for an even greater performance increase, but I did not want to totally ruin my gas mileage as I drive a lot on the expressway. Also these gears are just as quiet as the stock ones, no gear whine or any strange noises or anything like that. Overall I am very pleased with this upgrade. Note: You will need an aftermarket tuner (i have the bama tuner) to correct the speedometer and (and tranny shift points if you have an automatic) when doing a gear swap

    Top 500 Contributor

    fuelforfire87

    Year: 2011 Model: V6 Driving Style: Daily Driver 'Stangs I have owned: 1 Chicago, IL

    Helpful (6) (1)

  • 4/5 Yes, I recommend this product

    December 03, 2012

    3;55 Gear swap

    I have the 6 speed manual and did as much research as possible to get the desired performance VS drivability. At 70 mph my tach reads 2200 RPM in 6th. i am trending about 3 mpg lower than with the stock 2:73 setup. The car launches like a rocket if you are aggressive from a stop. I have a 50 mile comute each way from work. if i had it to do again i would probably have chosen 3:31 ratio. Had the gears installed by a local shop for $375.00 was done at the end of the day. You do however absolutely need to purchase the tuner. I must have called 20 shops to include a few Ford dealers and could not get anyone to program the computer for the new ratio. i bought the Diablo sport tuner and it also required a custom program for 3:55 it only came with 3:31 or 3:73 out of the box. end result is the car is much peppier and generally more fun to drive. Good Luck!

    WB1974

    Year: 2012 Model: V6 Driving Style: Daily Driver 'Stangs I have owned: 2

    Helpful (4) (0)

  • 5/5

    December 13, 2012

    Make sure you get the kit with it

    I went to a for shop that I trusted based on reviews. They were a little more expensive than my cousins shop, but I trusted them over my cousins. Make sure to buy the gear kit with this for 75 as most shops wont reuse the bearings in the rear end and that required me coming back to the site to overnight. The gears give the car what it needed a little more low end pop, I have the 91R tune with this kit and notice my gas mileage plummit, but that's because I love driving it now with those gears in it. I actually usually start in second gear now as with my exhaust it is too noisey around town. Freeway is ok, I don't know how some people are getting no noticable gas mileage loss since 80 mph is around 2300-2450 rpms. Overall I LOVE THIS MOD. Who cares about mpg

    eddieaced

    Year: 2011 Model: V6 Driving Style: Daily Driver 'Stangs I have owned: 3 salt lake city ut

    Helpful (3) (0)

  • 5/5 Yes, I recommend this product

    July 03, 2012

    the right choice for the v6

    When i first got my car, i knew that it would need taller gears. the 2.73's are great for fuel economy, but it just has to work to hard to get going. i spent some time deciding which ones to get, the 3.55's or the 3.73's. here's why i chose the 3.55's. first you only needed to shift into 2nd in order to get to 60 mph and you redline in third at the end of a quarter mile. any taller and you would need an extra shift. less shifts means quicker times. With 3.73's you might get me off the line, but that won't last for long. it still pulls like a madman at almost any rpm, and i am still getting around 30 mpg on the highway. as far as the product is concerned, top quality, had a trusted shop put them in. was the first mod where i didn't do it myself, i wasn't about ready to mess around with those by myself. no extra noise, runs cleaner than the original gears. as always great service from am, i have gotten almost every mod through them. i can't wait for somebody to make a roots supercharger for the '11 and turn my little v6 into a snake eater! thanks am

    Top 250 Contributor

    gwhiz

    Year: 2011 Model: V6 Driving Style: Daily Driver 'Stangs I have owned: 1

    Helpful (3) (0)

  • 5/5 Yes, I recommend this product

    April 28, 2014

    Daily driven 13' v6 mustang

    This is the apsolute perfect gear for daily driving. I honestly wouldn't of minded 3.31's! I'm in love with my car now. Going from the stock 2.73's to 3.55's is a huge jump and completely woke my stang up. I wouldnt of wanted 3.73's for daily driving that would be to much! It feels like a real pony now. You won't be disappointed !!

    MCAvictor

    Year: 2013 Model: V6 Driving Style: Daily Driver 'Stangs I have owned: 2 PA

    Helpful (2) (0)

  • 5/5 Yes, I recommend this product

    January 21, 2013

    How to wake up your V6 Mustang

    The .355 gear is pretty much perfect. You might want a bit less or a bit more gear but I think this is a perfect fit. With a 91 octane performance tune the car will shift into 2nd without spinning the tires much, perfect for max speed. Even the race tune only spins the tires a bit. If a quick V6 or a V8 standard drops the clutch and is spinning...I'm leaving! From a dead start (at one mile of altitude) this car just leaves hard, little or no spinning (don't powerbrake or you'll spin 'em too much). I've walked on V8 Challengers and Mustangs (older ones). I ran very close with a 2012 5.0 thru 2 gears and then shut down (I'm sure it would have only gotten worse). Those little V6 Lexus coupes don't like me at all :-) They are not used to even 2011/12/13 V6 Stangs kicking their little butts (BAMA 91p tune needed, they are pretty quick). I get about 20mpg with a fair mix of freeway and street. The V6 automatic doesn't have any low-end guts but with a .355, even with no BAMA tune the car leaves hard, it's very nice (you should have your SCT tuner of course!).

    OldschoolNewTool

    Year: 2011 Model: V6 Driving Style: Daily Driver 'Stangs I have owned: 1 Albuquerque, NM, USA

    Helpful (2) (0)

  • 5/5 Yes, I recommend this product

    April 14, 2012

    Best Bang For Your Buck!

    I bought these because they were on sale and also i wanted lower rpms at freeway speed than the 3.73s the performance of the car is MUCH improved. and crusing at 80 mph the car is still very quiet with no gear whine at all.

    argyle1812

    Year: 2011 Model: V6 Driving Style: Daily Driver 'Stangs I have owned: 2 Spanaway, WA, USA

    Helpful (3) (1)

  • 4/5 Yes, I recommend this product

    July 07, 2014

    3.55 for 2013 ford mustang v6

    Changed my rear gear from 2.73 to 3.55 for my mustang 3.7, 6spd automatic. It made a nice improvement in acceleration and rpms are still fairly normal when driving in the city because of the 6spd. mpg shouldn't change much at all in the city. Maybe abit more on the highway depending if your doing the limit or driving faster then you should be. If your mainly in the city for daily use or cruising around, go with the 3.73's to get the most out of it without sacrificing much fuel economy. I would have gone with 3.73's if i was able to try the 2 gears out first. If I had a standard trans, i would stick with the 3.55's for all around driving situations. If your not worried about fuel ecomony as much and into cruising and racing around town, 4.10 gears for a 6spd auto will give you the quickest acceleration. And get a Sct Bama tuner like i did to fix the speedometer, plus the other benefits it does for more performance.

    Daveh13

    Year: 2013 Model: V6 Driving Style: Daily Driver 'Stangs I have owned: 4

    Helpful (1) (0)

  • 5/5 Yes, I recommend this product

    June 16, 2013

    FUN!

    These gears are great fun! I put the pic of the dash at 80MPH or 130km/h for me. That is in 6th gear of course. The fuel mileage meter is not going to be correct in the pic, as I had just reset it.

    Olitheon

    Year: 2011 Model: V6 Driving Style: Daily Driver 'Stangs I have owned: 1 Toronto, ON, Canada

    Helpful (1) (0)

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