Free Shipping On Orders Over $49. Details

Talk to a Mustang Enthusiast
M-F 8:30A-11P, Sat-Sun 8:30A-9P

EXCEL from Richmond Ring and Pinion Gear Kit; 3.73 Gear Ratio (11-14 V6)

Item 21526G116
Call a Mustang Enthusiast at 1-877-887-1105
M-F 8:30A-11P, Sat-Sun 8:30A-9P
Market Price $186.99 You Save 12% ($22.04)
Our Price


FREE Shipping

Will this fit your Vehicle?

Select a different vehicle Help?
Update or Change Vehicle
In Stock

Ship to: Ashburn - 20149
Sorry, please enter a valid US or CA postal code
We're sorry, zip can't be updated at this time.
    Create a list
    Add to New List

    Saved - View your saved items

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

      Product Information

      Features, Description, Reviews, Q&A, Specs & Installation


      • Superior Quality
      • 3.73:1 Gear Ratio
      • 8.8" Ring Gear Diameter
      • For Street or Track Use
      • Made in the USA
      • Fits 2011-2014 V6 Mustangs


      Improve Off The Line Acceleration. Are you on a quest to improve the low end grunt and performance of your 2011-2014 V6 Mustang? If you answered yes, you should consider upgrading to a set of Richmond Excel 3.73 Ring and Pinion Gears. From the factory most 3.7L V6 Mustangs were equipped with either 2.73 or 3.31 gears, which work very well to conserve fuel mileage, but leave something to be desired when it comes to performance. Richmond's Excel 3.73 Gears have a steeper ratio, when compared to the stock gears, which will place your Mustang into its power band much sooner for a noticeable improvement in torque and off the line acceleration. A set of 3.73 gears are perfect for use in street, track and drag applications.

      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 3.73 ratio Richmond Excel Ring and Pinion Gear set will fit all 2011 to 2014 3.7L V6 Mustang models equipped with an 8.8" solid axle 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. 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: 2011 2012 2013 2014 Details

      EXCEL from Richmond F88373

      CA Residents: WARNING: Cancer and Reproductive Harm -

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Ring gear
      • (1) Pinion gear

      Tech Specs

      Approximate RPM for 2011-2014 V6

      Gear @25 MPH @35 MPH @45 MPH @55 MPH @65 MPH @75 MPH
      1 4210 5894        
      2 2795 3913 5031 6149    
      3 1944 2722 3499 4277 5054 5832
      4 1518 2126 2733 3340 3948 4555
      5 1150 1610 2070 2531 2991 3451
      6 748 1047 1346 1645 1944 2243

      Gear @25 MPH @35 MPH @45 MPH @55 MPH @65 MPH @75 MPH
      1 4798 6717        
      2 2692 3768 4845 5922 6998  
      3 1750 2449 3149 3849 4549 5249
      4 1315 1841 2367 2892 3418 3944
      5 997 1396 1795 2194 2593 2992
      6 795 1113 1431 1749 2067 2384

      Customer Reviews (86)

        Reviews of EXCEL from Richmond Drivetrain products have an average rating of 3.9 out of 5

          Questions & Answers

          10 More Questions

          Will It Fit My Mustang

              Related Mustang Categories