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

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  • Item 50166G05

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    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

    MPN# M-4209-G355A

    CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

    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?

      Customer Photos

        Questions & Answers (1)

        1 Top Rated Question

        I have a mustang 07 gt 4.6 manual transmission, it has 4.10 gear i wamt replace it for oem, put original. I bought used mustang.

        • This will work for your 2007 GT

        Helpful (0)
        Post Your Question

          Customer Reviews (4) Write a Review

          Overall Rating 5

          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 (5)

          • 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 (7)

          • 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 (7)

          • 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 (9)

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