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EXCEL from Richmond Ring Gear and Pinion Kit - 4.10 Gears (10-14 V8)

Market Price $186.99 You Save 12% ($22.04)
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  • Item 21528G11

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Ship to: Ashburn - 20149
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    Features & Details

    • Superior Quality
    • 4.10:1 Gear Ratio
    • 8.8" Ring Gear Diameter
    • For Street or Track Use
    • Made in the USA
    • Fits 2010-2014 GT, BOSS and Shelby GT500 Mustangs
    Improve Off The Line Acceleration. Are you looking to increase the off the line performance and low end grunt of your V8 powered S197 Mustang? Then you should upgrade to a set of Richmond Excel 4.10 Ring and Pinion Gears. Excel's 4.10 Gears have a much higher ratio when compared to your 2010-2014 Mustangs factory installed 3.31, 3.55 or 3.73 gears. This steeper gear ratio will place your Pony into its power band much quicker and therefore off the line faster with an increase in torque. Richmond Excel 4.10 Ring and Pinion Gears are ideal for those Mustang owners that want more get up and go out of their Pony.

    Superior Quality. Richmond proudly manufactures their Ring and Pinion Gear Sets right here in the USA. Using state-of-the-art manufacturing processes and extensive quality control testing, Richmond produces a superior quality Ring and Pinion Gear Set at an excellent price. Richmond is so confident in the quality of their products that they back them with a 6 month, 50,000 mile no-nonsense warranty.

    Required Upgrade. 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.

    Recommended Upgrade. Please note that when changing the gear ratio of your Mustangs rear differential that the calibration of your speedometer will no longer be correct and will display the wrong speed. However, you can easily fix this annoying issue with a Handheld Tuner (sold separately).

    Application. This 4.10 ratio Richmond Excel Ring and Pinion Gear set will fit all 2010 to 2014 V8 Mustangs equipped with an 8.8" solid axle rear end, including the GT, BOSS and Shelby GT500 models. 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. 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: 2010 2011 2012 2013 2014 Details

    MPN# F88410

    CA Residents: WARNING: Cancer and Reproductive Harm -

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

    Approximate RPM for 2011-2014 GT

    Gear @25 MPH @35 MPH @45 MPH @55 MPH @65 MPH @75 MPH
    1 4628 6479        
    2 3072 4301 5100% 6759    
    3 2137 2991 3846 4701 5556 6410
    4 1669 2337 3004 3672 4339 5007
    5 1264 1770 2276 2782 3287 3793
    6 822 1151 1479 1808 2137 2466

    Gear @25 MPH @35 MPH @45 MPH @55 MPH @65 MPH @75 MPH
    1 5274          
    2 2959 4142 5325 6509    
    3 1923 2692 3462 4231 5000 5769
    4 1445 2023 2601 3179 3757 4335
    5 1096 1535 1973 2412 2850 3289
    6 874 1223 1573 1922 2272 2621
    Will it fit my Mustang?

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    Customer Reviews (4) Write a Review

    Overall Rating 3.5

    out of 5 stars

    Installation Time:Afternoon

    • Performance Gain 3.5 3.5
    • Fit 3.5 3.5

    • 5/5

      Installation Time: Afternoon

      January 26, 2019

      Richmond gears

      Got them installed a week ago and honestly very quite no noise at all dont know why their negative comments just take them to someone that knows how to install them. Worth the money great up grade! Got charged 275 for inatall. 2 hours install time


      Year: 2010 Submodel: GT

      Helpful (0)

    • 1/5

      Installation Time: Afternoon

      November 26, 2017

      Don't waste your money

      Fitment is ok but the whining is absolutely unbearable. Had it apart three times to verify all specs and backlash were 100. Put my factory gears back in.


      Year: 2014 Submodel: GT

      Helpful (2)

    • 3/5

      Installation Time: Full Day

      September 26, 2017

      Richmond Gears

      Installed gears to ford backlash .0010 went for drive very noisy. Pulled rear end out of car so I could access everything better. Replaced pinion bearings just to be sure I had not damaged one, also new crush sleeve. Reset backlash to .007, checked pattern on gears perfect. Went for another drive Less wine but still noticeable, more at higher speed. Would buy ford performance parts next time.


      Year: 2012 Submodel: GT

      Helpful (3)

    • 5/5

      September 07, 2017


      Makes a little noise at 75 but it is 410 gears going to have some noise but a great product car pulls a lot better the third fourth fifth no more lag great for 1/4 mile runs


      Year: 2010 Submodel: GT

      Helpful (3)

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