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EXCEL from Richmond Ring and Pinion Gear Kit; 3.73 Gear Ratio (86-93 GT)

Item 21526G87
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$164.95

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      Product Information

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

      Features

      • Superior Quality
      • 3.73:1 Gear Ratio
      • 8.8" Ring Gear Diameter
      • For Street or Track Use
      • Made in the USA
      • Fits 1986-1993 GT, 5.0 LX and SVT Cobra

      Description

      Improve Off The Line Acceleration. Get your classic Fox Body Mustang up and moving by installing a set of Richmond Excel 3.73 Ring and Pinion Gears. Richmond's Excel 3.73 Gears have a higher ratio when compared to the gears installed by Ford at the factory. This steeper ratio is designed to get your Mustang into its power band quicker which will improve low end torque for faster 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. 

      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 new Speedometer Gear (sold separately).

      Application. This 3.73 ratio Richmond Excel Ring and Pinion Gear set will fit all 1986 to 1993 V8 Mustangs equipped with an 8.8" solid axle rear end, including the GT, 5.0 LX, and SVT Cobra 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: 1986 1987 1988 1989 1990 1991 1992 1993 Details

      EXCEL from Richmond F88373

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

      Installation & What's in the Box

      Installation Info

      What's in the Box

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

      Tech Specs

      Approximate RPM for 1986-1993 GT


      Manual
      Gear@25 MPH @35 MPH @45 MPH @55 MPH @65 MPH @75 MPH
      1387654276977   
      2228932054120503659516867
      31100%21422754336639784590
      4115016102070253129913451
      577110791387169520042312


      Automatic
      Gear@25 MPH @35 MPH @45 MPH @55 MPH @65 MPH @75 MPH
      12761386549696073  
      2168723623037371243865061
      3115016102070253129913451
      476710741380168719942301
      3.9

      Customer Reviews (88)

        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

          • GT - 87, 88, 89, 90, 91, 92, 93
          • LX - 87, 88, 89, 90, 91, 92, 93
          • Other - 86

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