Free Shipping On Orders Over $49. Details

Talk to a Mustang Expert
1-888-332-7930
Mon - Sun, 8:30 AM EST - 11:00 PM EST
Win A 700+ HP 2018 RTR Mustang Enter Now!

Ford Performance Ring Gear and Pinion Kit - 3.55 Gears (05-09 GT)

Market Price $189.99 You Save 11% ($20.00)
Our Price

$169.99

FREE Shipping
  • Item 50166G05
  • MPN# M-4209-G355A

Local Install Shops

Quoted installation from $125

View 3 Shops

near 19355 (change)

Sorry, please enter a valid US or CA postal code
We're sorry, zip can't be updated at this time.
In Stock Ships same business day.
Ship to: ASHBURN - 20146
Sorry, please enter a valid US or CA postal code
We're sorry, zip can't be updated at this time.
Choose options to add to cart
    Create a list
    Add to New List

    Saved - View your saved items

    We're sorry. We couldn't save this product at this time.

    Features & Details

    • Ford Racing Quality
    • Strong Forged Construction
    • 3.55 Gear Ratio
    • 8.8" Ring Gear Diameter
    • For Street or Track Use
    • Fits 2005-2009 GT, Bullitt and GT500 Mustangs
    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.

    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 3700 5180 6660      
    2 2190 3065 3941 4817 5693 6569
    3 1445 2023 2601 3179 3757 4335
    4 1095 1533 1971 2408 2846 3284
    5 744 1042 1340 1638 1936 2233


    Automatic
    Gear @25 MPH @35 MPH @45 MPH @55 MPH @65 MPH @75 MPH
    1 3525 4935 6345      
    2 2507 3510 4513 5515 6518  
    3 1686 2360 3035 3709 4383 5058
    4 1095 1533 1971 2408 2846 3284
    5 777 1088 1399 1710 2021 2332
    Will it fit my Mustang?
    • Bullitt - 08, 09
    • GT - 05, 06, 07, 08, 09

    Customer Photos

    You Might Also Like

    Q & A

    No questions about this product yet.

    Ask the First Question

    More Products You Might Like

    Customer Reviews (4) Write a Review

    Overall Rating 5.0

    out of 5 stars

    Installation Time:Full Day

    Installation Cost:$500-$1000

    • Performance Gain 5 5
    • Fit 5 5



    • 5/5

      Installation Time: Full Day

      October 15, 2017

      wakes up car

      install in my own shop good product 1 day but had to move some other parts to work on rear more bite on hitting throttle made a good gain on road coarse handling and lap time

      Dan926

      Year: 2009 Submodel: GT

      Helpful (0)

    • 5/5

      Installation Time: Afternoon

      November 13, 2015

      Ford Racing Gear

      The gear was as described a factory Ford Racing product. I was very pleased with the quality of the gear and the complete bearing kit to do the installation with. I would purchase another one when we need them.

      THCparts

      Year: 2007 Submodel: GT Mt. Holly NC

      Helpful (2)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: $500-$1000

      March 21, 2014

      Ford Racing 3.55 Gear Set

      This set replaced my worn out set. I bumped up the performance level by getting the Forged gear set. This is very strong set that will last a very long time!!!

      Goakley1

      Year: 2007 Submodel: Other New Port Richey, FL, USA

      Helpful (2)

    • 5/5

      Installation Time: Full Day

      July 27, 2012

      TheOne (1)

      I was really impressed with the torquiness of the car after the install. Also better hook ups.

      Two2

      Year: 2007 Submodel: GT Artesia, NM 88210, USA

      Helpful (4)

    Related Mustang Categories