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

Market Price $186.99 You Save 12% ($22.04)
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$164.95

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  • Item 21526G87
  • MPN# F88373

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    Features & Details

    • 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
    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

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

    Approximate RPM for 1986-1993 GT


    Manual
    Gear @25 MPH @35 MPH @45 MPH @55 MPH @65 MPH @75 MPH
    1 3876 5427 6977      
    2 2289 3205 4120 5036 5951 6867
    3 1100% 2142 2754 3366 3978 4590
    4 1150 1610 2070 2531 2991 3451
    5 771 1079 1387 1695 2004 2312


    Automatic
    Gear @25 MPH @35 MPH @45 MPH @55 MPH @65 MPH @75 MPH
    1 2761 3865 4969 6073    
    2 1687 2362 3037 3712 4386 5061
    3 1150 1610 2070 2531 2991 3451
    4 767 1074 1380 1687 1994 2301
    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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    Customer Reviews (4) Write a Review

    Overall Rating 4.8

    out of 5 stars




    • 5/5

      February 20, 2010

      sweeeet

      Great gear,Great price.just great...if jesus and moses says its great, then you know it is. ^^^^

      moses

      Helpful (2)

    • 5/5

      April 14, 2011

      great gears

      these gears are great! i had stock 273's in my convertible lx and they were no fun. now my car darts off the line and i feel the power all the way through the RPMs. Installation's a little pricey but worth every penny. Gas mileage does not change much as well

      Mr

      Year: 1993 Submodel: Other

      Helpful (1)

    • 4/5

      June 30, 2010

      rear end rebuild

      WORKS REALLY WELL,MUCH BETTER ON THE BOTTOM END THAN STOCK GEARS,LITTLE NOISE BUT NOTHING TOO BAD.

      Clayton Hopkins

      Helpful (1)

    • 5/5

      January 02, 2010

      great

      awesome! just simply awesome, from the price to the performance

      Jesus

      Helpful (1)

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